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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 the holotype specimen, which was found at the Richards Spur locality in Oklahoma. The holotype, a well preserved skull, was found in early Permian-aged fissure fill deposits in Ordovician limestone. The specific name is given for Mark McKinzie, who found and donated the specimen to the Sam Noble Oklahoma Museum of Natural History Sam, SAM or variants may refer to: Places * Sam, Benin * Sam, Boulkiemdé, Burkina Faso * Sam, Bourzanga, Burkina Faso * Sam, Kongoussi, Burkina Faso * Sam, Iran * Sam, Teton County, Idaho, United States, a populated place People and fictio .... In 2021 a second specimen was referred, ROMVP 86541, a skull with right lower jaw. Anatomy ''Nannaroter'' is the smallest known ostodolepid and is diagnosed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richards Spur
Richards Spur is a Permian fossil locality located at the Dolese Brothers Limestone Quarry north of Lawton, Oklahoma. The locality preserves clay and mudstone fissure fills of a karst system eroded out of Ordovician limestone and dolomite, with the infilling dating to the Artinskian stage of the early Permian (Cisuralian), around 289 to 286 million years ago. Fossils of terrestrial animals are abundant and well-preserved, representing one of the most diverse Paleozoic tetrapod communities known. A common historical name for the site is Fort Sill, in reference to the nearby military base. Fossils were first reported at the quarry by workers in 1932, spurring a wave of collecting by local and international geologists. Early taxa of interest included the abundant reptile ''Captorhinus'' and microsaurs such as ''Cardiocephalus'' and ''Euryodus''. Later notable discoveries include ''Doleserpeton'' (one of the most lissamphibian-like Paleozoic tetrapods), the most diverse assortment of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ostodolepidae
Ostodolepidae, also spelled Ostodolepididae, is an extinct family of Early Permian microsaurs. They are unique among microsaurs in that they were large, reaching lengths of up to , terrestrial, and presumably fossorial. Ostodolepid remains have been found from Early Permian beds in Texas, Oklahoma, and Germany. Ostodolepids have elongated trunks, with small, robust limbs and shortened tails. The occiput is high, but the skull narrows toward the snout. The snout is pointed and projects past the jaw. In dorsal view, the skull is roughly triangular. The ventral temporal margin is emarginated. At the back of the skull, there is a large cavity between the supraoccipital and the skull roof. The skull is well ossified, with tight sutures between bones. The skull roof is relatively smooth, although scattered pits and grooves are usually present. There are 32 to 45 presacral vertebrae, and three sacral Sacral may refer to: *Sacred, associated with divinity and considered worthy of spiri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2009 In Paleontology
Arthropods Cephalopods Three new species of extinct octopus, Octopoda discovered in 2009. The species – ''Keuppia hyperbolaris'', ''Keuppia levante'', and ''Styletoctopus annae'' – lived about 95 million years ago, and bear a strong resemblance to modern octopuses, suggesting that the Octopoda order has remained relatively unchanged for tens of millions of years. The fossils included evidence of cephalopod arm, arms, muscles, rows of suckers, cephalopod ink, ink, and internal gills. The discovery was made by a team led by Dirk Fuchs of the Freie University, which is located at Berlin, Germany.Rare fossil octopuses found NBC News, March 18, 2009 The fossils were found at Hakel and Hadjoula, Lebanon. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proxilodon Bonneri
''Proxilodon'' is an extinct genus of recumbirostran microsaur from the Early Permian Speiser Formation of Kansas, United States. It contains a single species, ''Proxilodon bonneri'', (formerly "Euryodus" ''bonneri''). History of study There is only one known specimen of ''Proxilodon bonneri'', the former holotype of ''Euryodus bonneri'', named by Schultze & Foreman (1981). It was collected in 1976 by Brian Foreman from a roadcut site in Kansas in the lower Speiser Formation (often called the Speiser Shale) that preserves primarily aquatic vertebrates, such as the lungfish '' Gnathorhiza'', the dvinosaur temnospondyl '' Acroplous vorax'', the nectridean lepospondyl ''Diplocaulus'', and the lysorophian '' Lysorophus tricarinatus''. The species was named after Orville Bonner, who prepared the specimen, a complete skull with the left lower jaw in articulation and associated vertebrae and a fragmentary humerus. Huttenlocker et al. (2013) identified numerous differences from oth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Recumbirostra
Recumbirostra is a clade of tetrapods which lived during the Carboniferous and Permian periods. They are thought to have had a fossorial (burrowing) lifestyle and the group includes both short-bodied and long-bodied snake-like forms. At least one species, the molgophid ''Nagini mazonense,'' lost its forelimbs entirely. It includes the families Pantylidae, Gymnarthridae, Ostodolepidae, Rhynchonkidae and Brachystelechidae, with additional families such as Microbrachidae and Molgophidae being included by some authors. Recumbirostra was erected as a clade in 2007 to include many of the taxa traditionally grouped in "Microsauria", which has since been shown to be a paraphyletic or polyphyletic grouping. Like other "microsaurs", the recumbirostrans have traditionally been considered to be members of the subclass Lepospondyli; however, many phylogenetic analyses conducted since the 2010s have recovered recumbirostrans as basal sauropsid amniotes instead. Not all phylogenetic analyses rec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carrolla
''Carrolla'' is an extinct genus of brachystelechid 'microsaur' that lived in the Lower Permian in North America. It was named in 1986 by American paleontologists Wann Langston and Everett Olson. The type species, ''Carrolla craddocki'', is the only known species. History of study ''Carrolla'' was named for the type species by Langston & Olson (1986) for a single, complete skull collected from the early Permian of Archer County, Texas; the specimen is reposited at the Texas Memorial Museum in Austin. They immediately recognized the similarity to Brachystelechus'',' the eponymous genus from Europe; this genus was subsequently synonymized with ''Batropetes,'' traditionally considered a reptile but which had taxonomic precedent. Numerous features were cited as evidence for an ability to burrow, which was considered rare among 'microsaurs' at the time, and several shared features with modern amphibians were noted, although some of these have been subsequently disproven. Maddin e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stegotretus
''Stegotretus'' is an extinct genus of lepospondyl microsaur referred to the Pantylidae. It is known from the Carboniferous–Permian boundary Cutler Formation exposures of New Mexico. History of study Material now referred to ''Stegotretus'' was first described (in brief) by Eberth & Berman (1983). It was formally named by Berman et al. (1988). The genus name comes from the Greek ''stegos'' ('roof') and ''tretos'' ('perforated') to refer to a large fenestra found on the palatine bone. The species name, ''S. agyrus'', is said to be derived from Greek ''agyrus'' ('gathering' / 'crowd') in reference to the concentration of all known specimens in a small area. The proper word in ancient Greek for 'gathering' / 'crowd' is however ''agora'' (ἀγορά), with the variant ''agyris'' (ἄγυρις) in the Aeolic dialect.Liddell, H.G. & Scott, R. (1940). ''A Greek-English Lexicon. Revised and augmented throughout by Sir Henry Stuart Jones with the assistance of Roderick McKenzie.''Ox ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micraroter
''Micraroter'' is an extinct genus of microsaur within the family Ostodolepidae Ostodolepidae, also spelled Ostodolepididae, is an extinct family of Early Permian microsaurs. They are unique among microsaurs in that they were large, reaching lengths of up to , terrestrial, and presumably fossorial. Ostodolepid remains have b .... References Ostodolepids Cisuralian amphibians of North America Fossil taxa described in 1973 {{Lepospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tambaroter
''Tambaroter'' is an extinct genus of ostodolepid microsaur from the Early Permian of Germany. The type species ''T. carrolli'' was named in 2011. ''Tambaroter'' is known from a single skull found in the Tambach Formation The Tambach Formation is an Early Permian-age geologic formation in central Germany. It consists of red to brown-colored sedimentary rocks (red beds) such as conglomerate, sandstone, and mudstone, and is the oldest portion of the Upper Rotliegend ..., which is the lowermost unit of the Upper Rotliegend. It is the only vertebrate that has been found outside the Bromacker Quarry, the most productive locality of the formation. It is also the first ostodolepid known from outside North America. Like other ostodolepids, ''Tambaroter'' has a pointed snout. Bones in the cheek region are indented upward, leaving a large gap in the bottom of the back of the skull. ''Tambaroter'' and other ostodolepids have prominent projections in the back of the lower jaws called ret ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelodosotis
''Pelodosotis'' is an extinct lepospondyl Lepospondyli is a diverse taxon of early tetrapods. With the exception of one late-surviving lepospondyl from the Late Permian of Morocco (''Diplocaulus minumus''), lepospondyls lived from the Early Carboniferous ( Mississippian) to the Early Per ... amphibian. References *Carroll, R. L., 1988: Vertebrate paleontology and evolution. W. H. Freeman and company, New York, 1988, 698 Ostodolepids Permian amphibians of North America Permian amphibians {{Lepospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 Daly based on material collected from the early Permian South Grandfield locality in southwestern Oklahoma. The genus name is given for the Greek ''hapsido''- ('arch') and -''pareion'' ('cheek'). The species name, ''H. lepton'', is given for the slightness of the animal. The taxon is known from several partial to complete skulls and possibly by some isolated postcranial material. Anatomy ''Hapsidopareion'' was originally differentiated from other microsaurs by the large temporal emargination, which produced other variable morphology of the circum-emargination bones (e.g., postorbital). It is similar to the more recently described '' Llistrofus pricei'' in this regard, but can be differentiated from ''L. pricei'' by features such as the abse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 and the now extinct microsaur amphibians. It was of small size, about 15 cm in length. Unlike modern caecilians, which are legless, ''Eocaecilia'' possessed small legs, and while modern caecilians have poorly developed eyes and spend a lot of time under ground, ''Eocaecilias eyes were somewhat better developed. Although the precise ancestry of ''Eocaecilia'' is debated (and other caecilians by extension), it likely resided among the ancestral lepospondyl or temnospondyl Temnospondyli (from Greek language, Greek τέμνειν, ''temnein'' 'to cut' and σπόνδυλος, ''spondylos'' 'vertebra') is a diverse order (biology), order of small to giant tetrapods—often considered Labyrinthodontia, primitive amphi ...Maddin H.C., Jenk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
