This list of prehistoric amphibians is an attempt to create a comprehensive listing of all

genera Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclat ...

from the fossil record that have ever been considered to be

amphibians Amphibians are four-limbed and ectothermic vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arbore ...

, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (''

nomina dubia In binomial nomenclature, a ''nomen dubium'' (Latin for "doubtful name", plural ''nomina dubia'') is a scientific name that is of unknown or doubtful application. Zoology In case of a ''nomen dubium'' it may be impossible to determine whether a s ...

''), or were not formally published (''

nomina nuda In taxonomy, a ''nomen nudum'' ('naked name'; plural ''nomina nuda'') is a designation which looks exactly like a scientific name of an organism, and may have originally been intended to be one, but it has not been published with an adequate descr ...

''), as well as

junior synonyms The Botanical and Zoological Codes of nomenclature treat the concept of synonymy differently. * In botanical nomenclature, a synonym is a scientific name that applies to a taxon that (now) goes by a different scientific name. For example, Linn ...

of more established names, and genera that are no longer considered amphibians. Modern forms are excluded from this list. The list currently includes 454 names.

Naming conventions and terminology

Naming conventions and terminology follow the

International Code of Zoological Nomenclature The International Code of Zoological Nomenclature (ICZN) is a widely accepted convention in zoology that rules the formal scientific naming of organisms treated as animals. It is also informally known as the ICZN Code, for its publisher, the ...

. Technical terms used include: *

Junior synonym The Botanical and Zoological Codes of nomenclature treat the concept of synonymy differently. * In botanical nomenclature, a synonym is a scientific name that applies to a taxon that (now) goes by a different scientific name. For example, Linna ...

: A name which describes the same taxon as a previously published name. If two or more genera are formally designated and the

type specimens In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes t ...

are later assigned to the same genus, the first to be published (in chronological order) is the senior synonym, and all other instances are junior synonyms. Senior synonyms are generally used, except by special decision of the ICZN, but junior synonyms cannot be used again, even if deprecated. Junior synonymy is often subjective, unless the genera described were both based on the same type specimen. *''

Nomen nudum In taxonomy, a ''nomen nudum'' ('naked name'; plural ''nomina nuda'') is a designation which looks exactly like a scientific name of an organism, and may have originally been intended to be one, but it has not been published with an adequate descr ...

'' (Latin for "naked name"): A name that has appeared in print but has not yet been formally published by the standards of the ICZN. ''Nomina nuda'' (the plural form) are invalid, and are therefore not italicized as a proper generic name would be. If the name is later formally published, that name is no longer a ''nomen nudum'' and will be italicized on this list. Often, the formally published name will differ from any ''nomina nuda'' that describe the same specimen. *''

Nomen oblitum In zoological nomenclature, a ''nomen oblitum'' (plural: ''nomina oblita''; Latin for "forgotten name") is a disused scientific name which has been declared to be obsolete (figuratively 'forgotten') in favour of another 'protected' name. In its p ...

'' (Latin for "forgotten name"): A name that has not been used in the scientific community for more than fifty years after its original proposal. *Preoccupied name: A name that is formally published, but which has already been used for another taxon. This second use is invalid (as are all subsequent uses) and the name must be replaced. As preoccupied names are not valid generic names, they will also go unitalicized on this list. *''

Nomen dubium In binomial nomenclature, a ''nomen dubium'' (Latin for "doubtful name", plural ''nomina dubia'') is a scientific name that is of unknown or doubtful application. Zoology In case of a ''nomen dubium'' it may be impossible to determine whether a s ...

'' (Latin for "dubious name"): A name describing a fossil with no unique diagnostic features. As this can be an extremely subjective and controversial designation, this term is not used on this list.

A

200px, '' Adelospondylus'' 200px, '' Albanerpeton'' 200px, '' Amphibamus'' 200px, '' Archegosaurus''

B

200px, '' Beelzebufo'' 200px, '' Balanerpeton'' 200px, '' Batrachosuchus''

C

200px, '' Cacops'' 200px, '' Cardiocephalus'' 200px, '' Compsocerops'' 200px, '' Chunerpeton''

D

200px, '' Diplocaulus'' 200px, '' Dvinosaurus''

E

200px, '' Eocaecilia'' 200px, '' Eryops'' *''

Ecolsonia ''Ecolsonia'' is an extinct genus of trematopid temnospondyl. Its phylogenetic position within Olsoniformes has been historically debated, but it is presently considered to be a trematopid. History of study The holotype of ''Ecolsonia'' is a ...

'' *''

Elfridia ''Elfridia'' is a poorly known extinct genus of microsaur within the family Gymnarthridae. History of study ''Elfridia'' was named in 1985 by American paleontologist David Thayer based on material collected from Carboniferous exposures of the ...

'' *''

Elginerpeton ''Elginerpeton'' is a genus of stegocephalian (stem-tetrapod), the fossils of which were recovered from Scat Craig, Morayshire in the UK, from rocks dating to the late Devonian Period (Early Famennian stage, 368 million years ago). The only known ...

'' *''

Embolomeri Embolomeri is an order of tetrapods or stem-tetrapods, possibly members of Reptiliomorpha. Embolomeres first evolved in the Early Carboniferous ( Mississippian) Period and were the largest and most successful predatory tetrapods of the Late Carb ...

'' *''

Enneabatrachus ''Enneabatrachus'' is an extinct genus of prehistoric frogs known from the late Jurassic Morrison Formation.Foster, J. (2007). "''Enneabatrachus hechti''" ''Jurassic West: The Dinosaurs of the Morrison Formation and Their World''. Indiana Univers ...

'' *''

Eocaecilia ''Eocaecilia'' is an extinct genus of gymnophionan amphibian from the early Jurassic Kayenta Formation of Arizona, United States. One species is described, ''Eocaecilia micropodia''. ''Eocaecilia'' shared some characteristics with salamanders a ...

'' *''

Eocyclotosaurus ''Eocyclotosaurus'' is an extinct genus of mastodonsauroid temnospondyl from the Middle Triassic (Anisian In the geologic timescale, the Anisian is the lower stage or earliest age of the Middle Triassic series or epoch and lasted from millio ...

'' *'' Eodiscoglossus'' *''

Eogyrinus ''Pholiderpeton'' (from el, φολῐ́δος , 'horny scale' and el, ἑρπετόν , 'creeping thing') is an extinct genus of embolomere amphibian which lived in the Late Carboniferous period ( Bashkirian) of England. The genus was first ...

'' *''

Eopelobates ''Eopelobates'' is an extinct genus of frogs in the family Pelobatidae. Closely related to the living European spadefoot toad, it is known from the Eocene of western North America, and the Eocene–Pliocene of Europe. It is suggested that the dis ...

'' *''

Eorhinophrynus ''Eorhinophrynus'' is an extinct genus of prehistoric frog from Wyoming. See also * List of prehistoric amphibians This list of prehistoric amphibians is an attempt to create a comprehensive listing of all genera from the fossil record that ha ...

'' *''

Eoscapherpeton ''Eoscapherpeton'' is an extinct genus of giant salamander, known from the Late Cretaceous of Central Asia. Fossils have been found in the Cenomanian aged Khodzhakul Formation and Dzharakuduk Formation, Turonian aged Bissekty Formation and the C ...

'' *''

Eoscopus ''Eoscopus'' is an extinct genus of dissorophoidean euskelian temnospondyl in the family Micropholidae. It is known from Hamilton Quarry, a Late Carboniferous lagerstätte near Hamilton, Kansas. Members of Micropholidae were historically include ...

'' *''

Eoxenopoides ''Eoxenopoides'' is an extinct genus of prehistoric frogs. It is known from Banke, a Maastrichtian/Selandian crater lake mudstone in South Africa. See also * Prehistoric amphibian * List of prehistoric amphibians This list of prehistoric amphi ...

'' *'' Erpetocephalus'' *'' Erpetosaurus'' *''

Eryops ''Eryops'' (; from Greek , , 'drawn-out' + , , 'face', because most of its skull was in front of its eyes) is a genus of extinct, amphibious temnospondyls. It contains the single species , the fossils of which are found mainly in early Permian (a ...

'' *''

Eryosuchus ''Eryosuchus'' is an extinct genus of capitosauroid temnospondyl amphibian from the Middle Triassic of northern Russia. It was a very large predator: the largest specimen known could reach up to 3.5 m (11.5 ft) in length, with a skul ...

'' *'' Erythrobatrachus'' *'' Estesina'' *'' Eugyrinus'' *''

Eupelor ''Eupelor'' is a dubious genus of prehistoric amphibian belonging to the temnospondyl family Metoposauridae. Fossils have been found in present-day Pennsylvania, within the Newark Supergroup, dating to the Late Triassic ( Norian). Taxonomy T ...

'' *''

Euryodus ''Euryodus'' is an extinct genus of microsaur within the family Gymnarthridae. References See also * Prehistoric amphibian * List of prehistoric amphibians This list of prehistoric amphibians is an attempt to create a comprehensive listing ...

'' *'' Eyrosuchus''

F

*'' Fayella'' *''

Fedexia ''Fedexia'' is an extinct genus of carnivorous temnospondyl within the family Trematopidae. It lived 300 million years ago during the late Carboniferous period. It is estimated to have been long, and likely resembled a salamander.

'' *''

Ferganobatrachus ''Gobiops'' is an extinct genus of temnospondyl from the Jurassic of Mongolia, China, and possibly Kyrgyzstan. The genus is represented by a single species, ''Gobiops desertus''. It was named in 1991 from the Late Jurassic Shar Teeg Beds of Mongo ...

G

200px, '' Gerrothorax'' *'' Gaudrya'' *''

Georgenthalia ''Georgenthalia'' is an extinct genus of dissorophoid temnospondyl from the Lower Permian. It is an amphibamid which lived in what is now the Thuringian Forest of central Germany. It is known from the holotype MNG 11135, a small, complete skull. ...

'' *''

Gephyrostegus ''Gephyrostegus'' is an extinct genus of gephyrostegid reptiliomorph amphibian. It was a small animal, 22 cm in total length, of generally lizard-like build and presumably habit. It had large eyes and a large number of small, pointed teeth, ...

'' *''

Gerrothorax ''Gerrothorax'' ("wicker chest") is an extinct genus of temnospondyl amphibian from the Triassic period of Greenland, Germany, Poland, Sweden, and possibly Thailand. It is known from a single species, ''G. pulcherrimus'', although several other s ...

'' *''

Gerobatrachus ''Gerobatrachus'' is an extinct genus of Amphibamidae, amphibamid temnospondyl (represented by the type species ''Gerobatrachus hottoni'') that lived in the Early Permian, approximately 290 million years ago (Ma), in the area that is now Baylor ...

'' *''

Gobiates ''Gobiates'' is an extinct genus of prehistoric amphibians. Fossils have been found in the Barun Goyot and Djadokhta Formations of Mongolia, the Bissekty Formation of Uzbekistan and the Paluxy and Twin Mountains Formations of Texas.

'' *'' Gobiatoides'' *''

Gobiops ''Gobiops'' is an extinct genus of temnospondyl from the Jurassic of Mongolia, China, and possibly Kyrgyzstan. The genus is represented by a single species, ''Gobiops desertus''. It was named in 1991 from the Late Jurassic Shar Teeg Beds of Mong ...

'' *'' Gonioglyptus'' *'' Gosgriffius'' *''

Greererpeton ''Greererpeton burkemorani'' ("crawler from Greer, West Virginia") is an extinct genus of colosteid stem-tetrapods from the Early Carboniferous period (late Viséan) of North America. ''Greererpeton'' was first described by famed vertebrate pal ...

H

*''

Habrosaurus ''Habrosaurus'' (, meaning "graceful lizard") is an extinct genus of prehistoric salamanders, and the oldest known member of the family Sirenidae. Two species are known, ''H. prodilatus'' from the middle Campanian Dinosaur Park Formation of Albe ...

'' *''

Hadrokkosaurus ''Hadrokkosaurus'' is an extinct genus of brachyopid temnospondyl amphibian from the Middle Triassic of the southwestern United States. It includes a single species, ''Hadrokkosaurus bradyi'', known from the Moenkopi Formation of Arizona ...

'' *''

Hapsidopareion ''Hapsidopareion'' is an extinct genus of microsaur belonging to the family Hapsidopareiidae. Fossils have been found in the early Permian of Oklahoma. History of study ''Hapsidopareion'' was named in 1973 by American paleontologist Eleanor ...

'' *''

Hatzegobatrachus ''Hatzegobatrachus'' is an extinct genus of prehistoric toad. It is sometimes considered the earliest known member of the family Bombinatoridae. It is known from the Late Cretaceous Densuş-Ciula Formation and Sard Formation of Romania, in the ...

'' *'' Hemprichisaurus'' *''

Heptasaurus ''Heptasaurus'' is an extinct genus of Triassic capitosaurian temnospondyl amphibian within the family Mastodonsauridae Mastodonsauridae is a family of capitosauroid temnospondyls. Fossils belonging to this family have been found in North ...

'' *'' Horezmia'' *'' Hylaeobatrachus'' *''

Hyperkynodon ''Hyperokynodon'' is an extinct genus of trematosaurian temnospondyl within the family Trematosauridae. Fossils have been found in Germany. While most trematosaurids existed during the Early Triassic, ''Hyperokynodon'' has been found in Late Tria ...

'' *''

Hynerpeton ''Hynerpeton'' ( ) is an extinct genus of early four-limbed vertebrate that lived in the rivers and ponds of Pennsylvania during the Late Devonian period, around 365 to 363 million years ago. The only known species of ''Hynerpeton'' is ''H. basse ...

I

*'' Icanosaurus'' *''

Ichthyostega ''Ichthyostega'' (from el, ἰχθῦς , 'fish' and el, στέγη , 'roof') is an extinct genus of limbed tetrapodomorphs from the Late Devonian of Greenland. It was among the earliest four-limbed vertebrates in the fossil record, and was on ...

'' *''

Indobenthosuchus ''Indobenthosuchus'' is an extinct genus of stereospondyl temnospondyl. See also * Prehistoric amphibian * List of prehistoric amphibians This list of prehistoric amphibians is an attempt to create a comprehensive listing of all genera from t ...

'' *''

Indobrachyops ''Indobrachyops'' is an extinct genus of temnospondyl amphibian from the Early Triassic of India. It is known from a nearly complete fossil skull that was first described by paleontologists Friedrich von Huene and M. R. Sahni in 1958 from the Pan ...

'' *'' Indolyrocephalus'' *''

Inflectosaurus ''Inflectosuchus'' is an extinct genus of prehistoric amphibian. References See also * Prehistoric amphibian * List of prehistoric amphibians This list of prehistoric amphibians is an attempt to create a comprehensive listing of all Genus, ...

'' *'' Inflectosuchus'' *''

Intasuchus ''Intasuchus'' is an extinct genus of temnospondyl amphibian from the Middle Permian of Russia. It is known from a single species, ''Intasuchus silvicola'', which was named in 1956. ''Intasuchus'' belongs to the family Intasuchidae and is probabl ...

'' *''

Iratusaurus ''Iratusaurus'' is an extinct genus of dissorophoid temnospondyl within the family Dissorophidae. It was described by Gubin (1980) on the basis of a fragmentary posterior skull. It is estimated to have been comparably large to ''Kamacops'', anoth ...

'' *''

Iridotriton ''Iridotriton'' is an extinct genus of prehistoric salamander known from a fossil found in stratigraphic zone 6 of the late Jurassic Morrison FormationFoster, J. (2007). "Appendix." ''Jurassic West: The Dinosaurs of the Morrison Formation and T ...

'' *''

Isodectes ''Isodectes'' is an extinct genus of dvinosaurian temnospondyl within the family Eobrachyopidae. The genus ''Saurerpeton'', named in 1909, is considered to be a junior synonym The Botanical and Zoological Codes of nomenclature treat the concep ...

'' *'' Itemirella''

J

*''

Jammerbergia ''Jammerbergia'' is an extinct genus of mastodonsauroid temnospondyl within the family Mastodonsauridae Mastodonsauridae is a family of capitosauroid temnospondyls. Fossils belonging to this family have been found in North America, Greenland ...

'' *''

Jakubsonia ''Jakubsonia'' is an extinct genus of early tetrapod from the Late Devonian of Russia. The type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is consider ...

'' *''

Jeholotriton ''Jeholotriton'' is a genus of primitive salamander from the Daohugou Beds (possibly dating to the late Jurassic period) near Daohugou village of Inner Mongolia, China. Wang Yuan from the Institute of Vertebrate Paleontology and Paleoanthropo ...

K

200px, '' Karaurus'' *''

Kamacops ''Kamacops'' is a genus of dissorophid temnospondyls known from the Middle to Late Permian of Russia that was described by Yuri Gubin in 1980. It is known from a single species, ''Kamacops acervalis,'' material of which is currently reposited ...

'' *''

Karaurus ''Karaurus'' (meaning ''head-tail'') is an extinct genus of stem-group salamander (Caudata) from the Middle to Late Jurassic (Callovian–Kimmeridgian) Karabastau Formation of Kazakhstan. It is one of the oldest salamanders known. ''Karaurus'' w ...

'' *'' Keraterpeton'' *''

Keratobrachyops ''Keratobrachyops'' is an extinct genus of trematosaurian temnospondyl found in the Arcadia Formation of Queensland, Australia. It had been thought to be a basal chigutisaurid but is now thought to be a basal brachyopomorph closely related to t ...

'' *''

Kestrosaurus ''Kestrosaurus'', occasionally misspelt as ''Kerstisaurus'', is an extinct genus of Triassic capitosauroid temnospondyl amphibian within the family Mastodonsauridae. See also * Prehistoric amphibian * List of prehistoric amphibians This list ...

'' *'' Kizylkuma'' *''

Koalliella ''Koalliella'' is an extinct genus of prehistoric salamander. It is the oldest known salamandrid. See also * Prehistoric amphibian * List of prehistoric amphibians This list of prehistoric amphibians is an attempt to create a comprehensive list ...

'' *''

Kokartus ''Kokartus'' is an extinct genus of prehistoric stem-group salamander (Caudata) from the Middle Jurassic Balabansai Formation of Kyrgyzstan. The absence of clear lines of arrested growth and annuli in long bones suggests that the animals lived i ...

'' *''

Komatosuchus ''Komatosuchus'' is an extinct genus of temnospondyl within the family Micromelerpetontidae. See also * Prehistoric amphibian * List of prehistoric amphibians This list of prehistoric amphibians is an attempt to create a comprehensive listing ...

'' *'' Konzukovia'' *''

Koolasuchus ''Koolasuchus'' is an extinct genus of brachyopoid temnospondyl in the family Chigutisauridae. Fossils have been found from Victoria, Australia and date back 120 Ma to the Aptian stage of the Early Cretaceous. ''Koolasuchus'' is the youngest kno ...

'' *''

Koskinonodon ''Anaschisma'' is an extinct genus of large temnospondyl amphibians. These animals were part of the family called Metoposauridae, which filled the crocodile-like predatory niches in the late Triassic. It had large skull about long, and possi ...

'' *''

Kourerpeton ''Kourerpeton'' is an extinct genus of dvinosaurian temnospondyl. Fossils of ''Kourerpeton'' were discovered in a window of a barber's shop in either Bisbee or Mesa, Arizona. ''Kourerpeton'' was named in 1976, with the type and only species be ...

'' *'' Kryostega'' *''

Kuttycephalus ''Kuttycephalus'' is an extinct genus of temnospondyl amphibians in the family Chigutisauridae from the Upper maleri formation of India. See also * List of prehistoric amphibians This list of prehistoric amphibians is an attempt to create a co ...

L

*''

Labyrinthodontia "Labyrinthodontia" (Greek, 'maze-toothed') is an informal grouping of extinct predatory amphibians which were major components of ecosystems in the late Paleozoic and early Mesozoic eras (about 390 to 150 million years ago). Traditionally consid ...

'' *'' Laccocephalus'' *''

Laccosaurus ''Laccosaurus'' is an extinct monotypic genus of rhinesuchid temnospondyl amphibian, the type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considere ...

'' *''

Laccotriton ''Laccotriton'' is an extinct genus of prehistoric salamanders which lived in Eastern Asia during the Late Jurassic. A nearly complete skeleton of ''L. subsolanus'' was found at Hebei, China. See also * List of prehistoric amphibians This lis ...

'' *'' Lafonius'' *''

Laidleria ''Laidleria'' is an extinct genus of unusual armored temnospondyl from Middle Triassic Burgersdorp Formation of South Africa South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Afri ...

'' *''

Lapillopsis ''Lapillopsis'' is an extinct genus of stereospondyl temnospondyl within the family Lapillopsidae. Fossils belonging to the genus have been found in the Arcadia Formation ( Rewan Group) of Queensland, Australia. History of study The type sp ...

'' *''

Latiscopus ''Latiscopus disjunctus'' is a small Late Triassic temnospondyl collected in 1940 by a Works Projects Administration crew working near Otis Chalk, Texas that was described by John Wilson in 1948. Description The holotype and only known specime ...

'' *'' Latonia'' *''

Leiocephalikon ''Leiocephalikon'' is an extinct genus of microsaur within the family Gymnarthridae. The type species is ''Amblyodon problematicum'' named by John William Dawson in 1882.J.W. Dawson. 1882. "On the Results of Recent Explorations of Erect Trees Co ...

'' *'' Lepterpeton'' *''

Lethiscus ''Lethiscus'' is the earliest known representative of the Aistopoda, a group of very specialised snake-like amphibians known from the early Carboniferous ( Mississippian). ''Lethiscus'' is known from only a single specimen from the Holkerian ...

'' *'' Liaobatrachus'' *''

Liaoxitriton ''Liaoxitriton'' is an extinct genus of prehistoric cryptobranchoid salamanders from the Early Cretaceous of China. It contains one species, ''L. zhongjiani'', from the Aptian aged Yixian Formation. A second species, ''L. daohugouensis'' fro ...

'' *''

Limnerpeton ''Limnerpeton'' is an extinct genus of dissorophoidean euskelian temnospondyl within the family Amphibamidae. Taxonomy ''Limnerpeton'' is currently restricted to the type species ''L. modestum'', which is dubious but represents an amphibamid. ...

'' *'' Limnoiketes'' *''

Limnogyrinus ''Limnogyrinus'' is an extinct genus of dissorophoidean euskelian temnospondyl within the family Micromelerpetontidae. See also * Prehistoric amphibian * List of prehistoric amphibians This list of prehistoric amphibians is an attempt to creat ...

'' *'' Lisserpeton'' *'' Lithobatrachus'' *''

Llankibatrachus ''Llankibatrachus'' is an extinct genus of prehistoric frogs in the family Pipidae. They are known from the Ypresian (Casamayoran) Huitrera Formation of Argentina. Description The type species and the only known species, ''Llankibatrachus true ...

'' *''

Llistrofus ''Llistrofus'' is an extinct genus of early Permian microsaur within the family Hapsidopareiidae that is known from Oklahoma. Discovery ''Llistrofus'' was described by Canadian paleontologists Robert Carroll and Pamela Gaskill in 1978. The ...

'' *'' Longiscitula'' *''

Loxomma ''Loxomma'' (meaning “slanting eyes”) is an extinct genus of Loxommatinae and one of the first Carboniferous tetrapods. They were first described in 1862 and further described in 1870 when two more craniums were found. It is mostly associat ...

'' *''

Luzocephalus ''Luzocephalus'' is an extinct genus of temnospondyl amphibian from the Early Triassic of Russia. It is usually regarded as a member of the family Lydekkerinidae, although it has also been placed in the family Trematosauridae Trematosauridae a ...

'' *''

Lydekkerina ''Lydekkerina'' is an extinct genus of stereospondyl temnospondyl. It is the type genus of the family Lydekkerinidae. Fossils have been collected from Early Triassic deposits in South Africa and Australia. The type species is '' L. huxleyi'', ...

'' *''

Lyrocephaliscus ''Lyrocephaliscus'' is an extinct genus of trematosaurian temnospondyl within the family Trematosauridae. Classification Below is a cladogram from Steyer (2002) showing the phylogenetic relationships of trematosaurids: See also * Prehistoric ...

'' *'' Lysorophus''

M

180px, '' Metoposaurus'' 180px, '' Microbrachis''

N

*''

Nannaroter ''Nannaroter'' is an extinct genus of Recumbirostran tetrapod within the family Ostodolepidae. History of study ''Nannaroter'' was named in 2009 by Canadian paleontologists Jason Anderson, Diane Scott, and Robert Reisz. It was known from only ...

'' *'' Nannospongylus'' *''

Nanolania ''Nanolania'' is an extinct genus of rhytidosteid temnospondyl from the early Triassic period (Induan stage) of south central Queensland, Australia. It is known from the holotype QMF 12293, a postorbital fragment associated with lower jaw frag ...

'' *''

Neldasaurus ''Neldasaurus'' is an extinct genus of dvinosaurian temnospondyl within the family Trimerorhachidae Trimerorhachidae is a family of dvinosaurian temnospondyls, including Trimerorhachis and Neldasaurus. They are vertebrates and carnivores. Ga ...

'' *'' Neusibatrachus'' *'' Nevobatrachus'' *''

Nezpercius ''Nezpercius'' is an extinct genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above speci ...

'' *''

Nigerpeton ''Nigerpeton'' is a genus of temnospondyl amphibian which lived during the late Permian (Changhsingian) some 250 million years ago in Niger, in what was then central Pangaea. Specimens of ''Nigerpeton'' were first collected during field work in t ...

'' *'' Notobatrachus'' *'' Notobrachiops''

O

180px, '' Ophiderpeton'' *''

Odenwaldia ''Odenwaldia'' is an extinct genus of mastodonsauroid temnospondyl within the family Heylerosauridae. History of study ''Odenwaldia'' is only known from one species, ''O. heidelbergensis'', and was named by Morales & Kamphausen (1984). The h ...

'' *'' Odonterpeton'' *'' Odontosaurus'' *''

Oestocephalus ''Oestocephalus'' is an extinct genus of aïstopod Stegocephalian that lived during the Carboniferous period. Fossils have been found in the Czech Republic, and in Ohio and Illinois in the United States. It is the type genus of the family ...

'' *'' Oligosemia'' *''

Onchiodon ''Onchiodon'' is an extinct genus of temnospondyl. It is primarily known from the Carboniferous and Permian The Permian ( ) is a geologic period and stratigraphic system which spans 47 million years from the end of the Carboniferous Period ...

'' *''

Ophiderpeton ''Ophiderpeton'' (from el, ὄφῐς , 'snake' and el, ἑρπετόν 'creeper') is an extinct genus of aistopod tetrapodomorphs from the early Carboniferous to the early Permian. Remains of this genus are widespread and were found in Ohio ...

'' *''

Opisthotriton ''Opisthotriton'' is an extinct genus of prehistoric salamanders that lived in North America between at least the Upper Cretaceous and the Paleocene. See also * List of prehistoric amphibians This list of prehistoric amphibians is an attempt ...

'' *''

Obruchevichthys ''Obruchevichthys'' is an extinct genus of tetrapod from Latvia during the Late Devonian. When the jawbone, the only known fossil of this creature, was uncovered in Latvia, it was mistaken as a lobe-fin fish. However, when it was analyzed, it ...

'' *''

Orthophyia ''Orthophyia longa'' is a prehistoric proteid salamander from the Miocene of Germany. The only known specimen is now lost. See also * List of prehistoric amphibian genera This list of prehistoric amphibians is an attempt to create a comprehens ...

'' *''

Ossinodus ''Ossinodus'' is an extinct genus of Crown group, stem tetrapod. Fossils have been found from the Ducabrook Formation in Queensland, Australia dating back to the middle Visean stage of the Early Carboniferous (Mississippian age, Mississippian). It ...

'' *''

Osteophorus ''Osteophorus'' is an extinct genus of eryopoidean temnospondyl within the family Eryopidae. It is only known from the Permian of Poland. See also * Prehistoric amphibian * List of prehistoric amphibians This list of prehistoric amphibians is a ...

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Ostodolepis ''Ostodolepis'' is an extinct genus of microsaur within the family Ostodolepidae. It is known from the Arroyo Formation in Texas. History of study The holotype of ''Ostodolepis'' was discovered in 1909 by American paleontologist S.W. Willisto ...

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200px, '' Platyhystrix'' 200px, '' Prosalirus'' 200px, '' Peltobatrachus'' 200px, '' Pantylus'' 200px, '' Paracyclotosaurus'' 200px, '' Pelodosotis'' 200px, '' Pelorocephalus''

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Quasicaecilia ''Quasicaecilia'' is an extinct genus of microsaur. It is known from the Early Permian of Texas in the United States. A single specimen is known, collected from the Texas Permian redbeds by Charles Hazelius Sternberg in 1917. It was originally id ...

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Quasicyclotosaurus ''Quasicyclotosaurus'' is an extinct genus of mastodonsauroid temnospondyl. It had a closed otic notch. See also * Prehistoric amphibian * List of prehistoric amphibians This list of prehistoric amphibians is an attempt to create a comprehensi ...

R

200px, '' Rhinesuchus'' *''

Rileymillerus ''Rileymillerus'' is an extinct genus of temnospondyl amphibian from the Late Triassic Post Quarry in the Dockum Group of Texas that was described by John Bolt and Sankar Chatterjee in 2000. The holotype, a nearly complete skull with articulated ...

'' *'' Rewana'' *''

Rhadalognathus ''Rhadalognathus'' was a prehistoric crocodile-like amphibian that belongs to the Mastodonsauridae family. Not much is known about this creature but it lived in the Triassic period. ''Rhadalognathus'' is also the name of the genus in which the ...

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Rhadinosteus ''Rhadinosteus parvus'' (meaning "long slender bone") is an extinct species of prehistoric frogs that lived during the Late Jurassic.Foster, J. (2007). "''Rhadinosteus parvus''." ''Jurassic West: The Dinosaurs of the Morrison Formation and Their ...

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Rhineceps ''Rhineceps'' is an extinct genus of temnospondyl amphibian in the family Rhinesuchidae. ''Rhineceps'' was found in Northern Malawi (formerly Nyasaland) in Southern Africa known only from its type species ''R. nyasaensis''. ''Rhineceps'' was a la ...

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Rhinesuchoides ''Rhinesuchoides'' is an extinct genus of prehistoric temnospondyl in the family Rhinesuchidae. It contains two species, ''R. tenuiceps'' and ''R. capensis'', both from the Karoo Supergroup of South Africa. The latter was formerly a species of '' ...

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Rhinesuchus ''Rhinesuchus'' (meaning "rasp crocodile" for the ridged surface texture on its skull bones) is a large temnospondyl amphibian. Remains of the genus are known from the Permian of the South African Karoo Basin's ''Tapinocephalus'' and ''Cistec ...

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Rhinophrynus This frog belongs to the Family ''Rhinophrynidae'' and Genus Rhinophrynus. Rhinophrynus dorsalis is the only living representation of the family Rhinophrynidae. This family is also known as the burrowing toads, and is evidently a small and specia ...

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Rhynchonkos ''Rhynchonkos'' is an extinct genus of microsaur. It is the only known member of the family Rhynchonkidae. Originally known as ''Goniorhynchus'', it was renamed in 1981 because the name had already been given to another genus; the family, likewis ...

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Rhytidosteus ''Rhytidosteus'' is an extinct genus of temnospondyl amphibian from the Early Triassic of South Africa. In 2019, the remains were also discovered in the Astrakhan region, Russia Russia (, , ), or the Russian Federation, is a transcon ...

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Ricnodon ''Ricnodon'' is an extinct genus of microsaur within the family (biology), family Hapsidopareiontidae. The genus name means ‘wrinkled tooth’ from Ancient Greek ῥικνός and ''odôn''. The specific name honors Edward Drinker Cope.Anton Fr ...

'' *'' Rotaurisaurus'' *'' Rubricacaecilia''

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200px, '' Sclerocephalus'' 200px, '' Saharastega'' 120px, '' Siderops''

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200px, '' Triadobatrachus'' 200px, '' Trematosaurus''

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Uranocentrodon ''Uranocentrodon'' is an extinct genus of the family Rhinesuchidae. Known from a skull, ''Uranocentrodon'' was a large predator with a length up to . Originally named ''Myriodon'' by van Hoepen in 1911, it was transferred to a new genus on acco ...

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Urocordylus ''Urocordylus'' is an extinct genus of nectridean lepospondyl. It is the type genus of the family Urocordylidae. Fossils have been found from Ireland that date back to the Westphalian stage of the late Carboniferous. This lepospondyl had total l ...

'' *'' Utaherpeton''

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Valdotriton ''Valdotriton'' is a genus of extinct prehistoric salamanders. Its only known species is ''Valdotriton gracilis'' (also known as the Wealden newt). ''V. gracilis'' lived during the Late Barremian in what is now Spain. It was found in the Las Ho ...

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Vanastega ''Vanastega'' is an extinct genus of Triassic temnospondyl amphibian in the family Brachyopidae. It is known from the Cynognathus Assemblage Zone in Burgersdorp, South Africa. The genus contains just one species, ''Vanastega plurimidens'', the ty ...

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Ventastega ''Ventastega'' (''Venta'' referring to the Venta River at the Ketleri Formation where ''Ventastega'' was discovered) is an extinct genus of stem tetrapod that lived during the Upper Fammenian of the Late Devonian, approximately 372.2 to 358.9 m ...

'' *'' Vieraella'' *'' Vigilius'' *'' Volgasaurus'' *''

Volgasuchus ''Volgasuchus'' was found in 1940; it was considered a Capitosauridae according to R. L. Carroll in 1988. There is little to no information on this amphibian. In 2020 ''Volgasaurus'' was found to be a junior synonym of '' Wetlugasaurus''.Carr ...

'' *'' Vulcanobatrachus''

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200px, '' Wetlugasaurus'' *''

Wantzosaurus ''Wantzosaurus'' was a genus of temnospondyl amphibian of the Trematosauridae family. Fossils have been found in the Early Triassic Middle Sakamena Formation (Sakamena Group) of what is now Madagascar. It showed adaptations for an almost complete ...

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Watsonisuchus ''Watsonisuchus'' is an extinct genus of temnospondyl amphibian from the Early Triassic of Australia, Madagascar, and South Africa. It was up to 122 cm long and had a robust skull The skull is a bone protective cavity for the brain. Th ...

'' *'' Wealdenbatrachus'' *''

Wellesaurus ''Wellesaurus'' is an extinct genus of mastodonsauroid temnospondyl. They were amphibious carnivores that lived in freshwater environments. ''Wellesaurus'' encompasses several species which were connected when the genus was named in 1971. The ...

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Wetlugasaurus ''Wetlugasaurus'' (meaning "Vetluga River lizard") is an extinct genus of Temnospondyli, temnospondyl amphibian from the Early Triassic (Olenekian) Charkabozh Formation, Charkabozh, Kzylsaiskaya Formation, Kzylsaiskaya, Petropavlovka Formation, ...

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Whatcheeria ''Whatcheeria'' is an extinct genus of early tetrapod from the Mississippian (Early Carboniferous) of Iowa. Fossils have been found in 340 million year old fissure fill deposits in the town of Delta. The type species, ''Whatcheeria deltae'' was ...

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Xenobrachyops ''Xenobrachyops'' is an extinct genus of temnospondyl amphibian from the Triassic of Australia, describing a single species, ''Xenobrachyops allos''. It is estimated to have been around fifty centimetres long and its diet would have consisted ...

'' *'' Xenotosaurus'' *'' Xestorrhytias''

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Yarengia ''Yarengia'' is an extinct genus of temnospondyl amphibian in the superfamily Mastodonsauroidea. It is known from Yarenga River, representing the Triassic of Russia. Phylogeny ''Yarengia'' in a cladogram after Novikov (2018) with only Early Tria ...

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Ymeria ''Ymeria'' is an extinct genus of early Stem tetrapoda, stem tetrapod from the Devonian of Greenland. Of the two other genera of stem tetrapods from Greenland, ''Acanthostega'' and ''Ichthyostega'', ''Ymeria'' is most closely related to ''Ichthyo ...

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Yuanansuchus ''Yuanansuchus'' is an extinct genus of mastodonsauroid temnospondyl. Fossils have been found from the Xinlingzhen formation in Yuan'an County, Hubei, China and date back to the Anisian stage of the Middle Triassic. See also * Prehistoric ...

'' *'' Yizhoubatrachus''

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200px, '' Zatrachys'' *'' Zaphrissa'' *''

Zatrachys ''Zatrachys'' is an extinct genus of large and flat-headed zatracheidid temnospondyl from the early Permian of North America. History of study ''Zatrachys'' was named by American paleontologist Edward Drinker Cope in 1878 for the type species ...

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Zygosaurus ''Zygosaurus'' is an extinct genus of dissorophid temnospondyl from the Middle-Late Permian of Russia. It was described in 1848 by Eduard Eichwald, making it the first dissorophid to be described and is known from a single species, ''Zygosaurus ...