Fossil taxa described in 1933

Thylacosmilus is an extinct genus of saber-toothed metatherian mammals that inhabited South America from the Late Miocene to Pliocene epochs. Though Thylacosmilus looks similar to the "saber-toothed cats", it was not a felid, like the well-known American Smilodon, but a sparassodont, a group closely related to marsupials, and only superficially resembled other saber-toothed mammals due to convergent evolution, with the aforementioned Thylacosmilus being one of the last known sparassodonts. A 2005 study found that the bite forces of Thylacosmilus and Smilodon were low, which indicates that the

Extinct genus of primates

Bactrosaurus (; meaning "Club lizard," "baktron" = club + sauros = lizard) is a genus of herbivorous hadrosauroid dinosaur that lived in Asia during the Late Cretaceous, from about 96 to 85 million years ago. The position Bactrosaurus occupies in the Cretaceous makes it one of the earliest known hadrosauroids, and although it is not known from a full skeleton, Bactrosaurus is one of the best known of these early hadrosauroids, making its discovery a significant finding.

Alectrosaurus (; meaning "alone lizard") is a genus of tyrannosauroid theropod dinosaur that lived in Asia during the Late Cretaceous period, about some 96 million years ago in what is now the Iren Dabasu Formation.

Pinacosaurus (meaning "Plank lizard") is a genus of ankylosaurid thyreophoran dinosaur that lived in Asia during the Late Cretaceous (Campanian, roughly 75 to 71 million years ago), mainly in Mongolia and China.

Indosuchus () is a genus of abelisaurid dinosaur from the Late Cretaceous Period (Maastrichtian, 70 to 66 million years ago) of what is now India. Like most theropods, Indosuchus was a bipedal carnivore. It was about long, weighed about , and had a crested skull, flattened on the top.

Indosaurus () is a genus of carnivorous theropod dinosaur that lived in what is now India, about 69 to 66 million years ago during the Maastrichtian division of the Late Cretaceous.

Austrosaurus (; ) was an extinct genus of sauropod dinosaur from the Allaru Formation, dated to the early Cretaceous (112-100 million years ago), of Central-Western Queensland in Australia. Several specimens are known.

Compsosuchus (meaning "elegant crocodile") is a dubious genus of abelisauroid theropod dinosaur from the Late Cretaceous Lameta Formation of India.

subspecies of mammal

Jubbulpuria ("Jubbulpore one") is the name given to a dubious genus of theropod dinosaur from the Late Cretaceous Lameta Formation of India.

Dryptosauroides (meaning "similar in form to Dryptosaurus") is a dubious genus of possibly abelisauroid theropod dinosaur from the Late Cretaceous (Maastrichtian) Lameta Formation of India. It has been estimated at long and in weight.

Mongolosaurus is a genus of titanosauriform sauropod dinosaur which lived during the Early Cretaceous of China.

Laevisuchus (, "light crocodile") is a genus of theropod dinosaur from the Late Cretaceous. Its remains were discovered by Charles Alfred Matley near Jabalpur in Maastrichtian "Carnosaur Bed" deposits in the Lameta Formation in Madhya Pradesh, central India, and were named and described by paleontologists Friedrich von Huene and Matley in 1933.

Coeluroides ("hollow form") is an extinct genus of theropod dinosaur that lived during the Late Cretaceous Period in what is now India. It is based solely on the holotype caudal vertebrae GSI K27/562, K27/574 and K27/595, discovered in a layer of the Lameta Formation. The type species, C. largus, was described by Friedrich von Huene and Charles Alfred Matley in 1933.

Discosauriscus was a small seymouriamorph which lived in what is now Central and Western Europe during the latest Carboniferous and in the Early Permian Period. Its best fossils have been found in the Broumov and Bačov Formations of Boskovice Furrow, in the Czech Republic.

species of mammal (fossil)

Ornithomimoides ("bird mimic-like") is a dubious genus of theropod dinosaur, from the Late Cretaceous (Maastrichtian stage, sometime between 70 and 66 mya) Lameta Formation of India. Two species have been identified, the type species O. mobilis and O. barasimlensis, were named by von Huene in 1932 and were described by Matley in 1933 though they are known only from isolated vertebrae. O. barasimlensis is known from five dorsal vertebrae, and O. mobilis from four smaller vertebrae, found at the same location.

Madtsoia is an extinct genus of madtsoiid snakes. It is known from the Eocene of Argentina (M. bai), the Paleocene of Brazil (M. camposi), the Late Cretaceous (Maastrichtian) of India (M. pisdurensis), and the Late Cretaceous (Maastrichtian) of Madagascar (M. madagascariensis). The type species (M. bai) was the largest with an estimated length of , and the other three species were smaller. A long M. madagascariensis would have weighed , but an isolated specimen suggests that this species reached in maximum length. Juvenile Madtsoia madagascariensis may have eaten a wide array of small vertebra

Endocerida, from Ancient Greek ἔνδον (éndon), meaning "inside", and κέρας (kéras), meaning "horn", is an extinct nautiloid order, a group of cephalopods from the Lower Paleozoic with cone-like deposits in their siphuncle. Endocerida was a diverse group of cephalopods that lived from the Early Ordovician possibly to the Late Silurian. Their shells were variable in form. Some were straight (orthoconic), others curved (cyrtoconic); some were long (longiconic), others short (breviconic). Some long-shelled forms like Endoceras attained shell lengths close to . The related Cameroceras is anecdotally

Uruguaysuchus is an extinct genus of crocodyliforms from the Late Cretaceous Guichón Formation of Uruguay. It was related to Simosuchus and Malawisuchus. It was of small to moderate size reaching an estimated length of .

Tricuspes is an extinct genus of cynodonts that lived in what would be Europe during the Triassic from 203.6 to 199.6 mya, existing for approximately . Three species are known: Tricuspes tubingensis (Huene, 1933), Tricuspes sigogneauae (Hahn et al., 1994) and Tricuspes tapeinodon (Godefroit and Battail, 1997), which are all from the Late Triassic (Rhaetian) period in continental Europe.

Europolemur is a genus of adapiform primates that lived in Europe during the middle Eocene.

genus of trilobites

thumb|upright|left|Aegyptosuchus (A) compared with Aegisuchus

prehistoric cat

Sivacanthion is an extinct genus of rodent from the Miocene of India. The build of Sivacanthion is very like that of a modern Old World porcupine, although details of the anatomy suggest that it is not a direct ancestor but a side branch of Hystricidae known in the Indian sub-continent.

Serbelodon is an extinct genus of proboscidean. It had tusks and a trunk. It lived in North America during the Miocene Epoch, and it was closely related to Amebelodon. They had a diet that consisted of C3 plants which include fruits, tree cortex, herbs, and leaves.

Absalomichthys velifer is an extinct, prehistoric manefish that lived during the Upper Miocene of what is now Southern California in the United States. Its dorsal fin was huge in comparison with living species. It is known from the Modelo Formation of Los Angeles County.

Plectronoceras is the earliest known shelled cephalopod, dating to the Late Cambrian. None of the fossils are complete, and none show the apex or aperture of the shell. Approximately half of its shell was filled with septa; 7 were recorded in a shell. Its shell contains transverse septa separated by about half a millimetre, with a siphuncle on its concave side. Its morphology matches closely to that hypothesised for the last common ancestor of all cephalopods.

Habrosaurus, meaning "graceful lizard", is an extinct genus of prehistoric salamanders, and the oldest and largest known member of the family Sirenidae. Two species are known, H. prodilatus from the middle Campanian Dinosaur Park Formation of Alberta, and H. dilatus from the late Maastrichtian and Paleocene of western North America. It is relatively common in the Lance Formation of Wyoming, and less common in the Hell Creek Formation of Montana. left|thumb|Artists reconstruction of Habrosaurus dilatus swimming by a cypress tree

Eocaiman is an extinct genus of caiman containing species living from the Early Paleocene to Miocene in what is now Argentina (Salamanca and Sarmiento Formations), Itaboraí Formation of Brazil and Colombia (Honda Group). Eocaiman contains three described species: E. cavernensis, E. palaeocenicus, and E. itaboraiensis, and is typically recovered as one of the more basal members of Caimaninae. Notocaiman was synonymized with Eocaiman paleocenicus in 2022.