| Ophiopsiella | |
|---|---|
 | |
| Illustration of Ophiopsiella procera | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| Order: | |
| Family: | |
| Genus: | Ophiopsiella Lane and Ebert, 2015 |
Ophiopsiella is an extinct genus of prehistoric ray-finned fish closely related to the bowfin.
The type species, Ophiopsiella procera, described by Agassiz (1844), [1] was previously considered by some authors to be the Ophiopsis type species. However, Lane and Ebert (2015) noted that Ophiopsis originally included O. muensteri only when first erected by Agassiz (1834), so they erected the new genus Ophiopsiella for Ophiopsis procera, referring "Ophiopsis" attenuata Wagner (1863), "Ophiopsis" penicillata Agassiz (1843), "Ophiopsis" breviceps Egerton (1852), "Ophiopsis" dorsalis Agassiz (1843), "Ophiopsis" montsechensis Wenz (1968) and "Ophiopsis" lepturus Bellotti (1857) to the genus. [2]
Tristychius is an extinct genus of shark from the Carboniferous period (Visean). Fossils of T. arcuatus, the type and only species, including fin spines have been found in Scotland.
Palaeoniscum is an extinct genus of ray-finned fish from the Permian period of Europe, North America (Greenland), and possibly other regions. The genus was named Palaeoniscum in 1818 by Henri Marie Ducrotay de Blainville, but was later misspelled as Palaeoniscus by Blainville and other authors. Palaeoniscum belongs to the family Palaeoniscidae.
Gyrosteus is an extinct genus of very large ray-finned fish belonging to the family Chondrosteidae. It comprises the type species, Gyrosteus mirabilis, which lived during the early Toarcian in what is now northern Europe. A possible second species, "Gyrosteus" subdeltoideus, is known from otoliths.
Coelacanthus is a genus of extinct coelacanths that first appeared during the Permian period. It was the first genus of coelacanths described, about a century before the discovery of the extant coelacanth. The order Coelacanthiformes is named after it.
Isurus is a genus of mackerel sharks in the family Lamnidae, commonly known as the mako sharks.
Rhinoptera is a genus of ray commonly known as the cownose rays. This genus is the only member of the family Rhinopteridae.
Megalichthys is a genus of prehistoric lobe-finned fish which lived during the Carboniferous period. It is the type genus of the family Megalichthyidae. The type species is M. hibberti. The species M. mullisoni is known from the Catskill Formation of Pennsylvania.
Paracentrophorus is an extinct genus of prehistoric ray-finned fish that lived during the Induan age of the Early Triassic epoch in what is now Madagascar. The type species is Paracentrophorus madagascariensis (monotypy).
Ptychoceratodus is an extinct genus of lungfish living from Early Triassic to Middle Jurassic. It was established by Otto Jaekel for one species, transferred from Ceratodus genus. Type species is P. serratus from the Middle Triassic of Switzerland and Germany. Ptychoceratodus had two pairs of massive dental plates, bearing 4-6 acute ridges. Its skull roof was composed from massive, plate-like bones. In the central part of skull roof was localized an unossified fenestra. Most of the Ptychoceratodus findings are isolated dental plates, some associated with jaws. Other parts of skull or postcranial skeleton are relatively rarely found as fossils. The anatomy of skull is the best recognized in P. serratus, whereas less complete cranial material is available also for P. concinuus, P. phillipsi, and P. rectangulus. Although Ptychoceratodus is known exclusively from the Triassic and Jurassic, there were also Cretaceous specimens referred to this genus. However, they are more often regarded as representants of Metaceratodus. Ptychoceratodus is the only member of the family Ptychoceratodontidae. The first named species is P. phillipsi by Louis Agassiz in 1837 as a species of Ceratodus and later moved to Ptychoceratodus genus. Occurrences of Ptychoceratodus come mainly from Europe. However, occurrences from other continents suggest it was dispersed globally during the Triassic. After 2010, the new fossil material behind the Europe was reported from South America, India, and Greenland
Porolepis is an extinct genus of porolepiform sarcopterygian fish, from the Early Devonian Dniester Series of Ukraine, which is rich in Porolepis remains, and also the Nellen Koepfchen Beds of Germany. It lived alongside the dubious lophotrochozoan Macrodontophion. It was first described in 1858 but Porolepis was not named as a sufficient species until 1891.
Coccolepis is an extinct genus of prehistoric ray-finned fish in the family Coccolepididae. Originally including most species within the family, it is now restricted to two species from the Late Jurassic Solnhofen Limestone of Germany. The holotype of C. bucklandi, designated and described by Louis Agassiz, was thought to be lost but was later rediscovered in Neuchâtel.
Sparnodus is an extinct genus of prehistoric perciform fish in the family Sparidae. Species of this genus were nektonic carnivore. These fishes lived in the Cenozoic Era, in Oligocene and Paleocene.
Ophiopsis is an extinct genus of prehistoric ray-finned fish belonging to the family Ophiopsidae. Specimens are known from the Tithonian-age Solnhofen Formation of Bavaria, Germany.
Chondrosteidae is a family of extinct actinopterygian fishes in the order Acipenseriformes. It comprises the Early Jurassic European genera Chondrosteus, Gyrosteus, and Strongylosteus. Included species were of large size, with body lengths ranging from 2 metres (6.6 ft) up to 7 metres (23 ft). Their skeleton was largely made up of bones, but ossification was reduced compared to other ray-fins.
Cretalamna is a genus of extinct otodontid shark that lived from the Late Cretaceous to Eocene epoch. It is considered by many to be the ancestor of the largest sharks to have ever lived, Otodus angustidens, and Otodus megalodon.
Palaeospinax is an extinct genus of shark which lived from the Early Triassic to the end of the Eocene epoch. Although several species have been described, the genus is considered nomen dubium because the type-specimen of the type species, Palaeospinax priscus, lacks appropriate diagnostic characters to define the genus.
Serratolamna is an extinct genus of mackerel sharks belonging to the family Cretoxyrhinidae.
Cladodus is an extinct genus of cartilaginous fishes in the family Cladoselachidae. As the name implies, they are a type of cladodont, primitive sharks with teeth designed to snag fish and swallow them whole, instead of sawing off chunks to swallow.
Nemacanthus is an extinct genus of prehistoric sharks in the family Palaeospinacidae.
Furo is an extinct genus of ray-finned fish belonging to the order Ioniscopiformes that has been found in Europe. The type species is F. orthostomus.
| |||||||||||||||||
 | This article about a prehistoric ray-finned fish is a stub. You can help Wikipedia by expanding it. |
