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Corynexochida
Corynexochida is an order of trilobite that lived from the Lower Cambrian to the Late Devonian. Like many of the other trilobite orders, Corynexochida contains many species with widespread characteristics. Description The middle region of the cephalon (arthropod anatomy), cephalon (the glabella) is typically elongate, with the sides often spreading forward (pestle-shaped). Some species have glabellae that are ''effaced'', meaning they are smooth and show little detail. The glabellar furrows (when not effaced) typically have a splayed arrangement. In most species, the hind pair on either side of the cephalon become spines that point sharply backwards, and the spinose tips of the anterior pairs of thoracic segments tend to become more and more forward directed toward the pygidium. The eyes are typically large. Pygidia are typically large, competing in size with the cephalon in some species. The tips of the thoracic segments of many Corynexochida species are spine-like (though in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trilobite
Trilobites (; meaning "three-lobed entities") are extinction, extinct marine arthropods that form the class (biology), class Trilobita. One of the earliest groups of arthropods to appear in the fossil record, trilobites were among the most successful of all early animals, existing in oceans for almost 270million years, with over 22,000 species having been described. Because trilobites had wide diversity and an easily fossilized mineralised exoskeleton made of calcite, they left an extensive fossil record. The study of their fossils has facilitated important contributions to biostratigraphy, paleontology, evolution, evolutionary biology, and plate tectonics. Trilobites are placed within the clade Artiopoda, which includes many organisms that are morphologically similar to trilobites, but are largely unmineralised. The relationship of Artiopoda to other arthropods is uncertain. Trilobites evolved into many ecological niches; some moved over the seabed as predators, scavengers, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leiostegiina
Corynexochida is an order of trilobite that lived from the Lower Cambrian to the Late Devonian. Like many of the other trilobite orders, Corynexochida contains many species with widespread characteristics. Description The middle region of the cephalon (the glabella) is typically elongate, with the sides often spreading forward (pestle-shaped). Some species have glabellae that are ''effaced'', meaning they are smooth and show little detail. The glabellar furrows (when not effaced) typically have a splayed arrangement. In most species, the hind pair on either side of the cephalon become spines that point sharply backwards, and the spinose tips of the anterior pairs of thoracic segments tend to become more and more forward directed toward the pygidium. The eyes are typically large. Pygidia are typically large, competing in size with the cephalon in some species. The tips of the thoracic segments of many Corynexochida species are spine-like (though in some species they are flush wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corynexochidae
Corynexochidae Angelin, 1854, is an extinct family of trilobites within the order Corynexochida Corynexochida is an order of trilobite that lived from the Lower Cambrian to the Late Devonian. Like many of the other trilobite orders, Corynexochida contains many species with widespread characteristics. Description The middle region of the ... Kobayashi, 1935. According to Jell and Adrain (2002) JELL P. A. and ADRAIN J. M., 2002. Available generic names for trilobites. ''Memoirs of the Queensland Museum'' 48(2): 331-553 . Hughes/L. English/J. Marcotthere there are at least 15 genera within the family Corynexochidae: Genera * † '' Abakania'' Poletaeva, 1973 * † '' Acontheus'' Angelin, 1851 * † '' Bonnaspis'' Resser, 1936 * † '' Chatiania'' Yang, 1977 * † '' Clavigellus'' Geyer, 1994 * † '' Corynexochella'' Suvorova, 1964 * † '' Corynexochina'' Lermontova, 1940 * † '' Corynexochus'' Angelin, 1854 * † '' Eochatiania'' Yuan and Yin, 1998 * † '' Eocorynexochu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acontheus
''Acontheus'' is a genus of trilobites belonging to the family Corynexochidae, order Corynexochida, and is geographically widespread having been recorded from middle Cambrian strata in Sweden, Newfoundland, Germany, Siberia, Antarctica, Queensland, China and Wales. ''Acontheus'' appears confined to the Drumian and Guzhangian Stages, uppermost two of three Stages subdividing the middle Cambrian Miaolingian Series and, if species assignments are correct, the genus ranges in terms of the Scandinavian sequence from at least the ''Hypagnostus parvifrons'' Biozone in Wales to the ''Lejopyge laevigata'' Biozone at various locations elsewhere. Taxonomy ''Acontheus'' has been placed in the subfamily Acontheinae (See Cotton, 2001, p. 194). Cotton (''op. cit.'') also erected Tribe HARTSHILLINI within the Acontheinae to accommodate the highly derived genera ''Hartshillia'' Illing, 1916 and ''Hartshillina'' Lake, 1940. Öpik (1982, p. 77) placed Acontheinae in the Dolichomet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corynexochina (genus)
Corynexochina is a poorly understood subdivision of the trilobite order Corynexochida. Taxonomy *''Corynexochidae'' Abakania, Acontheus, Bonnaspis, Chatiania, Clavigellus, Corynexochella, Corynexochina, Corynexochus, Eochatiana, Eocorynexochus, Hartshillia, Hartshillina, Milaspis, Miranella, Olinaspis, Sanaschtykgolia, Shivelicus, Trinia. *'' Dinesidae'' Amginoerbia, Botomella, Chakasskia, Chakasskiella, Compsocephalus, Densocephalus, Dilataspis, Dinesus, Erbia, Erbiella, Erbina, Erbiopsidella, Erbiopsis, Ghwaiella, Paraerbia, Piriforma, Pokrovskiella, Proerbia, Pseudoerbia, Pseudoerbiopsis, Rondocephalus, Tingyuania, Tollaspis, Tumulina. *'' Dokimocephalidae'' Acrocephalina, Alekcinella, Anemocephalus, Anuloides, Apachia, Bellaspidella, Bellaspis, Beothuckia, Burnetiella, Calocephalites, Chalfontia, Conaspis, Crusoiina, Deckera, Dellea, Delleana, Didwudina, Dokimocephalus, Fastigaspis, Glyptometopsis, Glyptometopus, Idd ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abakania
''Abakania'' is an extinct genus of corynexochid trilobite in the family Corynexochidae. It lived during the Botomian stage, which lasted from approximately 524 to 518.5 million years ago. This faunal stage was part of the Cambrian Period The Cambrian ( ) is the first geological period of the Paleozoic Era, and the Phanerozoic Eon. The Cambrian lasted 51.95 million years from the end of the preceding Ediacaran period 538.8 Ma (million years ago) to the beginning of the Ordovici .... Distribution * ''A. superba'' occurs in the Lower Cambrian of the Russian Federation (Botomian, Sanashtykgol Spring, Sanashtykgol Formation, Altay-Sayan Region, 49.4° N, 136.4° E). * ''A. crassa'' is present in the Lower Cambrian of the Russian Federation (Botomian, Kiya River section, ''Poliellaspis''-zone, Usa Formation, Kemorovo, Kuznetsk Alatau, 56.0° N, 88.0° E). ''cited in'' References Corynexochidae Cambrian trilobites Corynexochida genera Fossils of Russia Fossil taxa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Illaenina
The Illaenina are a suborder of trilobites in the order Corynexochida. Taxonomy *'' Illaenidae'' Alloillaenus, Bumastoides, Dysplanus, Ectillaenus, Harpillaenus, Hyboaspis, Illaenus, Nanillaenus, Ninglangia, Octillaenus, Ordosaspis, Parillaenus, Platillaenus, Ptilillaenus, Quadratillaenus, Snajdria, Spinillaenus, Stenopareia, Trigoncekovia, Ulugtella, Vysocania, Wuchuanella, Zbirovia, Zdicella, Zetillaenus. *'' Panderiidae'' Hemibarrandia, Ottenbyaspis, Panderia, Pogrebovites. *''Styginidae'' Alceste, Altaepeltis, Amphoriops, Ancyropyge, Andegavia, Arctipeltis, Australoscutellum, Avascutellum, Bojoscutellum, Boreoscutellum, Breviscutellum, Bronteopsis, Brontocephalina, Brontocephalus, Bubupeltina, Bumastella, Bumastus, Calycoscutellum, Cavetia, Cekovia, Chichikaspis, Chugaevia, Ciliscutellum, Cornuscutellum, Craigheadia, Cybantyx, Decoroscutellum, Delgadoa, Dentaloscutellum, Dulanaspis, Ekwanoscutellum, Eobronteus, Eokoso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trinia (trilobite)
''Trinia'' Poletaeva, 1956,POLETAEVA, O. K. 1956. Semejstvo Triniidae Poletayeva fam. nov., p. 178–179. In Kiparisova, L. D., Markovskij, B. P., and Radchenko, G. P. (eds.), ''Materialy po paleontologii''. Novye semejstva i rody. Vsesoyuznyi Nauchno-issledovatel'skii Geologicheskii Institut (VSEGEI), Trudy, Novaya Seriya, 12. is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the Cambrian Period The Cambrian ( ) is the first geological period of the Paleozoic Era, and the Phanerozoic Eon. The Cambrian lasted 51.95 million years from the end of the preceding Ediacaran period 538.8 Ma (million years ago) to the beginning of the Ordovici ..., which lasted from approximately 542 to 488 million years ago. References Corynexochidae Corynexochida genera Cambrian trilobites Cambrian trilobites of Asia Cambrian trilobites of Europe {{Corynexochida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shivelicus
''Shivelicus'' is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the Botomian stage, which lasted from approximately 524 to 518.5 million years ago. This faunal stage was part of the Cambrian Period The Cambrian ( ) is the first geological period of the Paleozoic Era, and the Phanerozoic Eon. The Cambrian lasted 51.95 million years from the end of the preceding Ediacaran period 538.8 Ma (million years ago) to the beginning of the Ordovici .... References Corynexochidae Corynexochida genera Cambrian trilobites Cambrian trilobites of Asia Cambrian trilobites of Europe {{Corynexochida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sanaschtykgolia
''Sanaschtykgolia'' is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the Botomian stage, which lasted from approximately 524 to 518.5 million years ago. This faunal stage was part of the Cambrian Period The Cambrian ( ) is the first geological period of the Paleozoic Era, and the Phanerozoic Eon. The Cambrian lasted 51.95 million years from the end of the preceding Ediacaran period 538.8 Ma (million years ago) to the beginning of the Ordovici .... References Corynexochidae Cambrian trilobites Cambrian trilobites of Europe Cambrian trilobites of Asia Corynexochida genera {{Corynexochida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botomella
''Botomella'' is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the late Atdabanian stage, which lasted from 530 to 524 million years ago during the early part of the Cambrian Period The Cambrian ( ) is the first geological period of the Paleozoic Era, and the Phanerozoic Eon. The Cambrian lasted 51.95 million years from the end of the preceding Ediacaran period 538.8 Ma (million years ago) to the beginning of the Ordovici .... References Dinesidae Cambrian trilobites Fossils of Russia Corynexochida genera Extinct animals of Russia {{Corynexochida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
