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Odontopleuridae
Odontopleuridae is a family of odontopleurid trilobites found in marine strata throughout the world. Odontopleurids of Odontopleuridae first appear in Late Cambrian-aged marine strata, and the last genera perish by the end of the Frasnian stage during the Late Devonian. The members of Odontopleuridae are famous for their spinose appearance, having long, often numerous spines along the edges of their exoskeletons, and derived from ends of segments or tubercle ornaments. Genera Genera include *'' Acanthalomina'' *?'' Acidaspidella'' *?'' Acidaspides'' *'' Acidaspis'' *'' Anacaenaspis'' *'' Apianurus'' *'' Archaeopleura'' *'' Boedaspis'' *'' Borkopleura'' *'' Brutonaspis'' *'' Calipernurus'' *'' Ceratocara'' *'' Ceratocephala'' *'' Ceratocephalinus'' *'' Ceratonurus'' *'' Chlustinia'' *'' Dalaspis'' *'' Diacanthaspis'' *'' Dicranurus'' *'' Dudleyaspis'' *'' Edgecombeaspis'' *'' Eoleonaspis'' *'' Exallaspis'' *'' Gaotania'' *'' Globulaspis'' *'' Hispaniaspis'' *'' Isoprusia'' *'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odontopleurida
Odontopleurida is an order (biology), order of very spinose trilobites closely related to the trilobites of the order Lichida. Some experts group the Odontopleurid families, Odontopleuridae and Damesellidae, within Lichida. Odontopleurids tend to have convex, bar-shaped cephalons, and lobed, knob-shaped glabella that extend to, or almost to the anterior margin. Many, if not almost all odontopleurids have long spines that are derived either from the margins of the exoskeleton, or from granular or tubercular ornamentation, or both. Many odontopleurids are so spinose so as to be described as having "spines on (their) spines." Odontopleurids have 8 to 13 thoracic segments, with Odontopleuridae odontopleurids having no more than 10, and Damesellidae odontopleurids having no more than 13. The pygidium tends to be very small, and invariably has long spines emanating from it in all known genera. Genera of Damesellidae are restricted to Middle to Upper Cambrian marine strata, and may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceratocephala (trilobite)
''Ceratocephala'' is a trilobite genus in the family Odontopleuridae. References External links Odontopleurida genera Odontopleuridae Ordovician trilobites of Europe Paleozoic life of Newfoundland and Labrador Paleozoic life of the Northwest Territories {{Odontopleurida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acidaspis
''Acidaspis'' is an extinct genus of odontopleurid trilobite from the Ordovician to Silurian of North America and Europe Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia .... Although small, it had long spines along its body. Reassigned species *''Acidaspis emarginata'' = '' Anabaraspis emarginata'' References Odontopleuridae Odontopleurida genera Ordovician trilobites of North America Silurian trilobites of Europe Silurian trilobites of North America Paleontology in Ohio Paleontology in New York (state) Paleozoic life of Ontario Paleozoic life of the Northwest Territories Paleozoic life of Nunavut Paleozoic life of Quebec {{Odontopleurida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dicranurus
''Dicranurus'' (Greek, 'dikranon', a pitchfork, and 'oura', tail) is a genus of Lower to Middle Devonian odontopleurid trilobites that lived in a shallow sea that lay between Euramerica and Gondwana, corresponding to modern-day Oklahoma and New York, and Morocco, respectively. As such, their fossils are found in New York, Oklahoma, and Morocco. Their bodies averaged about or so, in length, though their large spines made them at least in length. It is speculated that such tremendous spines hampered the ability of predators, such as arthrodire placoderms, to attack them, as well as to help prevent them from sinking into the soft mud of their environment. ''Dicranurus'' trilobites are distinguished from other odontopleurids by the pair of large, curled, horn-like spines that emanate from behind the glabellum. The genus name refers to these distinctive horns, in fact. In popular culture *''Dicranurus'' was an inspiration for an early version of an alien creature from the 2012 m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dudleyaspis
''Dudleyaspis'' is an extinct genus of Lower to Middle Devonian odontopleurid trilobites that lived in a shallow sea that lay between Euramerica and Gondwana.Ramsköld, L. (1984). Silurian Odontopleurid trilobites from Gotland. ''Palaeontology'' 27, 2, 239–264. It was named in 1949 by Prantl & Pribyl. Fossils of ''Dudleyaspis'' have been found in the following locations: *Australia: Bathurst ( Jesse Limestone), Mudgee ( Flirtation Hill) and Murrumbateman ( Black Bog Formation – Yarwood Siltstone Member) *Canada: Northwest Territories (Mackenzie Mountains – Delorme and Whittaker Formations) and Nunavut ( Bailie-Hamilton and Cornwallis Islands – Cape Phillips Formation) *Czech Republic: Prague (Loc. 5.2 – C. colonus Zone) *England: Cannock ( Shelve District) and Dudley (Wren's Nest – Much Wenlock Limestone Formation) *France: Coumiac (Coumiac quarry – Coumiac Formation) *Sweden: western Gotland (Visby – Rönnklint sea cliff and Kättelviken) *United States: Il ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Furongian
The Furongian is the fourth and final epoch and series of the Cambrian. It lasted from to million years ago. It succeeds the Miaolingian series of the Cambrian and precedes the Lower Ordovician Tremadocian Stage. It is subdivided into three stages: the Paibian, Jiangshanian and the unnamed 10th stage of the Cambrian. Naming The Furongian was also known as the Cambrian Series 4, and the name replaced the older term Upper Cambrian and equivalent to the local term Hunanian. The present name was ratified by the International Commission on Stratigraphy in 2003. () means ' lotus' in Mandarin and refers to Hunan which is known as the "lotus state". Definition The lower boundary is defined in the same way as the GSSP of the Paibian Stage. Both begin with the first appearance of the trilobite ''Glyptagnostus reticulatus'' around million years ago. The upper boundary is the lower boundary and GSSP of the Tremadocian Stage which is the first appearance of the conodont ''Iapetognathus f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
