Allopleuron is a genus of extinct sea turtle, which measured 2-to-2.5-metre long in life. The type species is Allopleuron hofmanni. It is a basal member of the clade Pancheloniidae, closely related to Protosphargis. Similar to Protosphargis, it was characterized by shell reduction.
Ailuravus is a genus of prehistoric rodents in the family Ischyromyidae.
Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database, a large relational database assembled by hundreds of paleontologists from around the world.
Hyposaurus is a genus of extinct marine dyrosaurid crocodyliform. Fossils have been found in Paleocene aged rocks of the Iullemmeden Basin in West Africa, Campanian–Maastrichtian Shendi Formation of Sudan and Maastrichtian through Danian strata in New Jersey, Alabama and South Carolina. Isolated teeth comparable to Hyposaurus have also been found in Thanetian strata of Virginia. It was related to Dyrosaurus. The priority of the species H. rogersii has been debated, however there is no sound basis for the recognition of more than one species from North America. The other North American species are therefore considered nomina vanum.
Kueichowlepis is an extinct genus of placoderm fish, which lived during the Devonian period of East Asia.
Fleurantia is a genus of prehistoric lungfish which lived during the Devonian period. Fossils have been found in North America.
Sauripterus is a genus of rhizodont lobe-finned fish that lived during the Devonian period . This genus was described by J. Hall after its discovery at Powy's Curve in Pennsylvania.
Screbinodus is a genus of rhizodont lobe-finned fish that lived during the Carboniferous period.
Batrachosaurus is an extinct genus of prehistoric brachyopoid amphibian that lived in Germany during the Middle Triassic (Ladinian). The genus was named by Joseph Fitzinger in 1837 and the type species, B. jaegeri, was named three years later in 1840. It may have been the same animal as Mastodonsaurus.
Melanerpeton is an extinct genus of prehistoric amphibian that lived during the Permian approximately 285 million years ago in what would become Europe.
Stoschiosaurus is an extinct genus of trematosaurian temnospondyl within the family Trematosauridae. It lived during the Early Triassic in what is now Greenland. Fossils were found in the Wordie Creek Formation.
Megapleuron is an extinct genus of prehistoric sarcopterygian or lobe-finned fish that lived during the Asselian age of the Cisuralian epoch in what is now Burgundy, France.
Scaumenacia is an extinct genus of prehistoric lungfish. It lived around the Devonian in North America alongside another prehistoric lungfish: Fleurantia. It lived from approximately 384 to 376 millions of years ago.
Rhadalognathus was a prehistoric crocodile-like amphibian that belongs to the Mastodonsauridae family. Not much is known about this creature but it lived in the Triassic period. Rhadalognathus is also the name of the genus in which the organism belongs within. Rhadalognathus was found in northern Arizona, US, by S. P. Welles in 1947. The size of the organism is unknown but its skull is about 17in long and weighs 7lbs.
Hypsitherium is an extinct genus of Mesotheriidae that lived 4.0 to 3 million years ago. It is known from the Miocene to Pliocene Inchasi fossil locality in Bolivia. Hypsitherium was a scansorial herbivore, and its name translates to "high beast."
Aprixokogia is an extinct genus of cetacean in the family Kogiidae that lived during the Pliocene in what is now North Carolina. It shared its habitat with ancestors of the modern pilot whale and pygmy right whale, as well as sea turtles and Pelagornis.
Miocochilius is an extinct genus of small notoungulate mammals (typotheres) native to South America. The genus lived during the Middle Miocene epoch. The genus contains two described species, the type species M. anomopodus described in 1953 by Ruben Arthur Stirton and M. federicoi, described and included in the genus by Darin A. Croft.
Microcnemus is an extinct genus of lizard-like early archosauromorph reptiles from the Protorosauridae. Members of the genus lived during the Early Triassic period in Russia. Once believed to have been an ancestor to lizards, Microcnemus is now known to be one of the oldest members of the lineage that would eventually lead to archosaurs such as crocodilians and dinosaurs. The type species, M. efremovi, was named in 1940 by the German palaeontologist Friedrich von Huene.
Thanatosdrakon is a genus of quetzalcoatline azhdarchid pterosaur from the Late Cretaceous Plottier Formation of the Neuquén Basin in western Argentina. The genus name is derived from the Greek words thanatos (=death) and drakon (=dragon), while the specific name is a Quechuan word meaning "flying serpent" and refers to the Incan deity Amaru. The type and only species is Thanatosdrakon amaru, known from two specimens consisting of several well-preserved axial and appendicular bones including material previously undescribed in giant azhdarchids. Thanatosdrakon is one of the oldest known members of the Quetzalcoatlinae. T. amaru lived from about 90 to 86 million years ago.
Paginula is an extinct genus of oldfieldthomasiid notoungulate. It lived during the Eocene in what is now Argentina.
