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Stereotoceras middle and upper Devonian genus in oncocerid family Brevicoceratidae that formed flat, depression, gyroconic shell back much flatter that the Venter. The seams are smooth on the bottom, but the shares back. Growth lines outline the ...


Famennian genus extinctions



Geisonoceras fossils occur in marine strata from the Ordovician to Devonian age range: 383.7 to 460.9 million years ago. Fossils are known from different localities in Europe, North America and Asia.











Aulatornoceratinae is one of three subfamilies of the family gonititid Tornoceratidae extinct Paleozoic ammonoid cephalopod order. Aulotornoceratinae was created as a subfamily of T. R. Becker, 1993, initially to Aulatornoceras named Schindewolf, ...









Clymeniidae family in the ammonoid order Clymeniida. It is characterized by a dorsal siphuncle that runs along the inner whorls, unusual for ammonoids.











Falcitornoceratinae is one of three subfamilies of the family Tornoceratidae, a member of the order Goniatitida. Made shells extremely involute and no navel. Young and middle whorls have grooves ventrolateral. In the accessory lobe, which develop ...





Kosmoclymeniinae Korn and price 1987. Muessenbiaergia Korn and price 1987. Linguaclymenia Korn and price 1987. Lissoclymenia Korn and price 1987. Kosmoclymenia Schindewolf 1949. Rodeckiinae Korn 2002. (Rodeckiinae Корн 2002) Franconiclymenia Korn ...







In the Phacopina account for the suborder of trilobites of the order Phacopida. Species belonging to the Phacopina lived from the Lower Ordovician to the end of the upper Devonian. One unique feature that distinguishes from all other Phacopina tr ...





Platyclymeniidae family of Ammonites belonging to Clymeniida order. Nektonic these fast-moving predators that lived in the Devonian period, the Famennian 364.7 in 360.7 MA.



Psammosteidae an extinct heterostracan vertebrate family of flattened, benthic, that lived in marine and estuary environments in Europe, Russia and North America. They originated in the early Devonian, the first known genus, Drepanaspis from the ...





Thelodonti class of extinct jawless fishes with distinctive scales instead of large plates of armor. There is much debate over whether the group of Palaeozoic fish known as the Thelodonti informed coelolepids represent a monophyletic grouping, or ...



Tornoceratoidea, also known as Tornocerataceae this superfamily goniatitid ammonoids included in the suborder Tornoceratina. Tornoceratoidea, or Tornocerataceae, in fact Cheilocerataceae Miller, furnish, and Schindewolf in the treatise part L, re ...



Corynexochida order of trilobites that lived from the lower Cambrian to the late Devonian. Like many other trilobite orders, Corynexochida contains many species with common characteristics. The middle region of the Cephalon between the eyebrows i ...



Eldredgeops is a genus of trilobites in the order Phacopida, family Phacopidae, known from the late middle and early upper Devonian of Morocco and the United States.



Lichida order of typically spiny trilobite that lived from the Furongian to Devonian period. These trilobites usually 8-13 thoracic segments. Their exoskeletons often have a grainy texture or wart-or spine-like tubercles. Some species are extraor ...



Odontopleurida order very spinose trilobites are closely related trilobites of the order Lichida. Some experts of the group of families Odontopleurid, Odontopleuridae and Damesellidae in Lichida. Odontopleurids, generally have a convex, lumber ce ...



The family Odontopleuridae odontopleurid trilobites found in the marine strata around the world. Odontopleurids from Odontopleuridae first appear in the late Cambrian-age marine layer, and the last childbirth will die by the end of Pronskogo laye ...


Ichthyostega stensioei



Cheiruridae family of phacopid trilobites of the suborder Cheirurina. Its members, like other representatives of the suborder, had distinctive pygidia modified into finger-like spines. They first appeared in the late Cambrian and persisted to the ...



Cheirurina is a suborder of trilobites of the order Phacopida. Known members range from upper Cambrian to late middle Devonian. Cheirurina consists of a morphologically diverse group of related families.


Arandaspis prionotolepis



Adeloceras is a genus of the Mississippi in the lower Permian nautiloid cephalopods included in the nautilid superfamily Aipocerataceae together with childbirth, as Aipoceras, Asymptoceras, and Solenochilus.



Amphiscapha is a fossil gastropod, monoplacophoran or less likely, a native of Pennsylvania and lower Permian of North and South America, part of the family Euomphalidae. It is sometimes considered as a subgenus of Straparollus, S. knight 1942



Dolorthoceras this nautiloid cephalopods from the upper Paleozoic is found in the lower Devonian to lower Permian deposits in North America, Europe, Asia and Australia. Shell smooth, slightly expanding orthocone with straight transvers oblique an ...



Endolobus is an extinct genus from the order of nautiloid, Nautilida. Nautiloidea are a subclass of shelled cephalopods that were once diverse and numerous but are now represented by only a few species, including Nautilus. Endolubus included in t ...



Labidosaurus is an extinct genus of attachment of masticatory muscles in reptiles of the Permian period of North America. The fossils were discovered in Texas. They were heavy, resembling a lizard with a large head and a length of about 75 cm 30 ...



Mariceras-rod in the late Carboniferous-early Permian nautilids in North America and Central Asia. Its shell is as Schyphoceras but less curved and smooth.



Neoglaphyrites it gonititid Ammonites that lived during the last of the Pennsylvanian and early Permian. Its shell is ellipsoidal and moderately involute, the umbilicus deep and usually less than 15 percent of the diameter of the shell, but in so ...



Solenochilus, rod type Solenochilidae cosmopotilian an extinct nautilid from the Lower Pennsylvanian to lower Permian with a rapidly expanding, spiral spherical shell with several whorls, of which the prominent spines extend on each side from the ...



Stearoceras-an extinct genus of prehistoric nautiloids from the Lower Penn - lower Permian with a Fair worldwide distribution. Stearoceras recognized shell involute with the tab depressed whorl subtrapizoidal and slight ventral and lateral lobes. ...


Artinskian genus extinctions



Blattoidealestes is an extinct genus of therocephalian therapsid from the Middle Perm South Africa. View Blattoidealestes gracilis was named by South African paleontologist Løwe Dirk Boonstra from the Tapinocephalus zone of the Assembly in 1954. ...



Shell depressed both the upper and lower sides, the outer rim is smooth, tuberculate along the upper edge, holes, more or less trapezoidal.



Cynariognathus is an extinct genus of carnivorous medium size therocephalian from the zone Tapinocephalus assemblage of South Africa. Sometimes considered synonymous Pristerognathus.

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