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List Of Trilobite Genera
This list of trilobites is a comprehensive listing of all genera that have ever been included in the Arthropod class Trilobita, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful ('), or were not formally published ('), as well as junior synonyms of more established names, and genera that are no longer considered trilobites. A Aa *''Aayemenaytcheia'' Ab *'' Abadiella'' (=''Parabadiella''; =''Danagouia'') *'' Abakania'' *'' Abakanopleura'' *'' Abakolia'' (=''Costadiscus'') *'' Abdulinaspis'' *'' Abharella'' Ac *'' Acadolenus'' *''Acadoparadoxides'' (=''Entomolithus''; =''Entomostracites''; =''Eoparadoxides'') *'' Acanthalomina'' *'' Acanthocephalus'' (=''Alomataspis'') *'' Acanthometopus'' *'' Acanthomicmacca'' (=''Chengkouia''; =''Jaskovitchella''; =''Myopsomicmacca'') *'' Acanthoparypha'' *'' Acanthophillipsia'' *'' Acanthopleurella'' *'' Acanthopyge'' (=''Euarges'') *'' Acastava'' *' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asaphiscus Wheeleri 3
''Asaphiscus'' is a genus of trilobite that lived in the Cambrian. Its remains have been found in Australia and North America, especially in Utah. Distribution * A. wheeleri'' occurs in the Middle Cambrian of the United States (Delamaran, Lower Wheeler Shale, Millard County, Utah, 40.0°N, 113.0°W; and Menevian, Wheeler Formation, House Range, Utah, 39.2° N, 113.3° W). Description ''Asaphiscus'' are average size trilobites of (up to ) with a rather flat calcified Anatomical terms of location#Dorsal and ventral, dorsal exoskeleton of inverted egg-shaped outline, about 1½× longer than wide, with the widest point near the back of the headshield (or Trilobite#Cephalon, cephalon). The cephalon is about 40% of the body length, is semi-circular in shape, has wide rounded genal angles, and a well defined border of about ⅛× the length of the cephalon. The central raised area of the cephalon (or Trilobite#Cephalon, glabella is conical in outline with a wide rounded front and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acastoides
''Acastoides'' is an extinct genus of trilobite that lived during the Silurian and Devonian The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, whe .... It has been found in Bolivia, France, Morocco, Poland, Turkey and the United Kingdom. Distribution * ''A. constricta'' is found in the Silurian of the United Kingdom (Wenlock, Woolhope Shale, Worcestershire, Malvern). Taxonomy Species previously assigned to ''Acastoides'' * ''A. verneuili'' = ''Calmonia terrarocenai'' See also * List of trilobites References External links Photos of ''Acastoides sp.''''Acastoides''at the Paleobiology Database Acastidae Prehistoric life of Europe Devonian trilobites Wenlock first appearances Eifelian extinctions Silurian trilobites of Europe {{devonian-animal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acastocephala
''Acastocephala'' is a genus of trilobite from the middle Silurian, known from the United Kingdom. Etymology The name is derived from the genus ''Acaste'' and the Ancient Greek κεφαλή (kephalē) "head", indicating the headshield is similar to ''Acaste''. Taxonomy ''Acastocephala'' may contain the ancestor of '' Acastava''. Distribution * ''A. macrops'' occurs in the Middle Silurian of the United Kingdom (Wenlock Shale, Malvern, Worcestershire; Wenlock Limestone, Pen-y-Lan, Cardiff, and Dudley and Ludlow, Ledbury Ledbury is a market town and civil parish in the county of Herefordshire, England, lying east of Hereford, and west of the Malvern Hills. It has a significant number of timber-framed structures, in particular along Church Lane and High Street ..., Hereford). * ''A. dudleyensis'' has been found in the Middle Silurian of the United Kingdom (Wenlock Limestone, Wren's Nest, Dudley, Worcestershire). References External links Wenlock Trilobite ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acastellina
''Acastellina'' is a genus of minute trilobites in the order Phacopida, which existed in what is now Germany. It was described by Richter and Richter in 1954. The type species is ''Acastellina nolens'', originally described as a species of '' Acastella''. P.A. Jell and J.M. Adrain. References External links ''Acastellina'' at the Paleobiology Database [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acastella
''Acastella'' is an extinct genus of trilobite. The genus contains six species being A. herberti, A. jacquemonty, A. prima, A. roualti, A. tanzidensis and A. tiro. References External links ''Acastella''at the Paleobiology Database Silurian trilobites Acastidae Fossils of Algeria Silurian first appearances Early Devonian genus extinctions {{phacopida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acaste (genus)
''Acaste'' is a genus of extinct trilobite of the order Phacopida which lived throughout the Silurian period (Wenlock Group). Though many species had been included, it now has only one species, ''Acaste downingiae.'' It is characterized by a convex dorsal surface, an absence of spines, a shortening of the head-shield and a general rounding off of all angles.H H Swinnerton - ''Outlines of Palaentology'', Edward Arnold (Publishers) Ltd, 1972 (p. 247) . Etymology * ''A. lokii'' is named after Loki, the Norse god of mischief. Loki tricked the blind god Höðr to kill the god of beauty Baldr, and so started the demise of the world (or Ragnarök). This epithet was chosen by Edgecombe because it is based on the cephalon of ''A. longisulcata'', which has turned out to be a mixed collection. The pygidium of ''A. longisulcata'' belongs to a Phacopoidea Phacopoidea is a superfamily of trilobite Trilobites (; meaning "three lobes") are extinct marine arthropods that form the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acastava
''Acastava'' is an extinct genus of trilobite in the order Phacopida, from the upper Pragian (''A. atavus'') to Emsian period (both other species listed) of the Devonian The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, whe .... References External links ''Acastava''at the Paleobiology Database Acastidae Devonian trilobites Fossils of Poland Fossil taxa described in 1954 {{phacopida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acanthopyge
''Acanthopyge'' is an extinct genus of lichid trilobite that lived during the Devonian The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, whe .... Very few ''A. consanguinea'' from the Devonian of Oklahoma have been found, and only a handful of complete specimens from Morocco, and many so-called ''Acanthopyge''-specimens from Morocco are fake. References Sources ''Photos of A. consanguinea'' External links '' Trilobite info (Sam Gon III)'' Lichida [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
