Odontopleurida is an
order
Order, ORDER or Orders may refer to:
* Categorization, the process in which ideas and objects are recognized, differentiated, and understood
* Heterarchy, a system of organization wherein the elements have the potential to be ranked a number of ...
of very spinose
trilobite
Trilobites (; meaning "three lobes") are extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest-known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the ...
s closely related to the trilobites of the order
Lichida
Lichida is an order of typically spiny trilobite that lived from the Furongian to the Devonian period. These trilobites usually have 8–13 thoracic segments. Their exoskeletons often have a grainy texture or have wart or spine-like tubercles. ...
. 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 represent a transition between Cambrian-aged lichids, and odontopleurids of Odontopleuridae. The odontopleurids of Odontopleuridae first appear in the Upper Cambrian, and go extinct before the end of the Frasnian stage of the late
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, w ...
.
;
Odontopleuridae
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Acanthalomina''
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Acidaspidella''
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Acidaspides''
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Acidaspis''
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Anacaenaspis''
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Apianurus''
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Archaeopleura''
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Boedaspis''
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Borkopleura''
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Brutonaspis''
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Calipernurus''
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Ceratocara''
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Ceratocephala''
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Ceratocephalinus''
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Ceratonurus''
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Chlustinia''
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Dalaspis''
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Diacanthaspis''
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Dicranurus''
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Dudleyaspis''
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Edgecombeaspis''
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Eoleonaspis''
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Exallaspis''
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Gaotania''
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Globulaspis''
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Hispaniaspis''
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Isoprusia''
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Ivanopleura''
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Kettneraspis''
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Koneprusia''
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Laethoprusia''
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Leonaspis
''Leonaspis'' is a widespread genus of odontopleurid trilobite that lived from the Late Ordovician to the late Middle Devonian. Fossils of various species have been found on all continents except Antarctica.
Sources
* ''Fossils'' (Smithsonian ...
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Meadowtownella''
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Miraspis
''Miraspis mira'' is a spinose species of odontopleurid trilobite in the family Odontopleuridae. Fossils of ''M. mira'' are known from the Wenlock-aged Liteň Formation in Loděnice, in Bohemia, Czech Republic, originally described by Joach ...
''
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Ningnanaspis''
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Odontopleura''
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Orphanaspis
''Orphanaspis'' is a poorly known genus of odontopleurid trilobite in the family Odontopleuridae. The genus is originally based on poorly preserved material from the Wenlock-aged Motol Formation in Bohemia, Czech Republic, described by Joach ...
''
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Periallaspis''
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Primaspis''
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Proceratocephala''
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Radiaspis''
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Rinconaspis''
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Selenopeltis''
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Selenopeltoides''
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Sinespinaspis''
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Stelckaspis''
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Taemasaspis''
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Uriarra
Uriarra Village is a community in the District of Coree, Australian Capital Territory established in 1928 at the foothills of the Australian Alps. A nearby area to the north of the border in New South Wales is also called Uriarra.
The settle ...
''
*''
Whittingtonia''
;
Damesellidae
Damesellidae is a family of odontopleurid trilobites found in late Middle to Late Cambrian marine strata, primarily of China. Damesellids are closely related to the odontopleurids of Odontopleuridae, but are not nearly as spinose, nor possess ...
*?''
Adelogonus
''Adelogonus'' is an extinct genus of damesellid odontopleurid trilobite. It lived from 501 to 490 million years ago during the Dresbachian faunal stage of the late Cambrian Period
The Cambrian Period ( ; sometimes symbolized C with bar, ...
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Bergeronites''
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Blackwelderia
''Parablackwelderia'' is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived from 501 to 490 million years ago during the Dresbachian faunal stage of the late Cambrian Period
The Cambrian Period ( ...
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Blackwelderioides
''Blackwelderioides'' is an extinct genus of damesellid odontopleurid trilobite. It lived from 501 to 490 million years ago during the Dresbachian faunal stage of the late Cambrian Period
The Cambrian Period ( ; sometimes symbolized C wit ...
''
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Chiawangella''
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Cyrtoprora
''Cyrtoprora'' is an extinct genus of damesellid odontopleurid trilobite. It lived from 501 to 490 million years ago during the Dresbachian faunal stage of the late Cambrian Period
The Cambrian Period ( ; sometimes symbolized C with bar ...
''
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Damesella''
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Damesops''
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Dipentaspis
''Dipentaspis'' is an extinct genus of damesellid odontopleurid trilobite. It lived during the Cambrian Period
The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Ph ...
''
*''
Dipyrgotes
''Dipyrgotes'' is an extinct genus of damesellid odontopleurid trilobite. It lived from 501 to 490 million years ago during the Dresbachian faunal stage of the late Cambrian Period
The Cambrian Period ( ; sometimes symbolized C with bar, ...
''
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Neodrepanura
''Neodrepanura'' is an extinct genus of damesellid odontopleurid trilobite.
Taxonomy
Species of ''Neodrepanura'' are better known under the older synonym, ''Drepanura'': the genus was renamed as ''Neodrepanura'' in 2006 by Özdikmen when "''Dre ...
''
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Duamsannella''
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Fengduia''
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Guancenshania''
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Hercantyx''
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Histiomona''
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Jiawangaspis''
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Karslanus''
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Liuheaspis''
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Metashantungia''
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Neodamesella''
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Palaeadotes,''
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Paradamesella''
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Parashantungia''
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Pingquania''
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Pionaspis''
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Protaitzehoia''
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Pseudoblackwelderia''
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Shantungia''
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Stephanocare''
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Taihangshania''
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Taitzehoia''
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Teinistion''
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Xintaia''
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Yanshanopyge''
References
Trilobite orders
Miaolingian first appearances
Frasnian extinctions
{{Odontopleurida-stub