Топ-100 ⓘ Free online encyclopedia. Did you know? page 330

ⓘ Free online encyclopedia. Did you know? page 330



Tritemnodon was a genus of hyaeanodontid which lived 54-38 million years ago. Fossils of this animal have been found in Willwood Formation of Big Horn County and the Lower Bridger Formation of Uinta County, Wyoming. It was the size of a wolf.



Typotheria is a suborder of the extinct mammalian order Notoungulata and includes five families: Archaeopithecidae, Campanorcidae, Interatheriidae, Mesotheriidae, and Oldfieldthomasiidae. Cifelli indicated that Typotheria would be paraphyletic if ...



Vassacyon is an extinct genus of Miacidae. It contains two species; Vassacyon promicrodon and Vassacyon bowni. It is considered the largest of the early Eocene mammals.



Yaverlestes gassoni is an extinct mammal which dates to the early Cretaceous period, 130 million years ago. It is part of the Wessex Formation from the Isle of Wight, England. The holotype, BMNH M 54386, is a partial jaw discovered near Yaverland ...


Prehistoric cetacean stubs


Prehistoric even-toed ungulate stubs


Prehistoric odd-toed ungulate stubs


Prehistoric primate stubs






Prehistoric arachnids


Liocypris grandis


Prehistoric crustaceans


Prehistoric myriapods


Extinct insects since 1500


Extinct beetles


Extinct Hemiptera


Extinct Hymenoptera


Extinct Lepidoptera


Prehistoric insects


Extinct insect taxonomy


Prehistoric bryozoan genera



Athyridida is an order of Paleozoic brachiopods included in the Rhynchonellata, which makes up part of the articulate brachiopods. The Athyridida are the Rostrospracea of R.C Moore, 1952, considered at that time to be a suborder of the Spiriferid ...


Gypospirifer condor

Gypospirifer condor is an extinct species of articulate brachiopod fossils belonging to the family Trigonotretidae. They were stationary epifaunal suspension feeders. Fossils of this species have been found in the sediments of the Carboniferous a ...



Orthida is an extinct order of brachiopods which appeared during the Early Cambrian period and became very diverse by the Ordovician, living in shallow-shelf seas. Orthids are the oldest member of the subphylum Rhynchonelliformea, and is the orde ...



Spiriferida is an order of extinct articulate brachiopod fossils which are known for their long hinge-line, which is often the widest part of the shell. In some genera it is greatly elongated, giving them a wing-like appearance. They often have a ...




Prehistoric brachiopod genera





Species of the genus Belosaepia reached 18 centimetres 7.1 in length and 5 centimetres 2.0 in across and had a large siphuncle that penetrated its oblique septa. The shell was endogastrically coiled. It had a small belemnite-like guard, which too ...


Borysthenia goldfussiana

† Borysthenia goldfussiana is an extinct species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails.


Carelia (gastropod)

Carelia is a genus of small, air-breathing, land snails, terrestrial pulmonate gastropod mollusks in the family Amastridae and superfamily Cochlicopoidea. Snails in this genus are endemic to the Hawaiian Islands.


Euryentmema cigclis






Guildfordia hendersoni



† Gyrotoma is a genus of extinct freshwater snails with an operculum, aquatic gastropod mollusks in the family Pleuroceridae. This genus was endemic to the USA. All of the species within this genus are presumed extinct. They were native to the ma ...


Heterocithara granolirata


Heterocithara laterculus


Heterocithara marwicki


Janulus pompylius

Janulus pompylius was a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Gastrodontidae. This species is now considered to be extinct.


Keraea garachicoensis

Keraea garachicoensis is an extinct species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Discidae or Endodontidae. Keraea garachicoensis is considered to be extinct.


Lymnaea tomentosa hamiltoni

Lymnaea tomentosa hamiltoni is an extinct subspecies of freshwater snail, an aquatic gastropod mollusc in the family Lymnaeidae, the pond snails. This species was endemic to New Zealand. The shells of these snails were found in lake marls in the ...


Parmacella gervaisii

Parmacella gervaisii is an extinct species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Parmacellidae. Parmacella gervaisii is considered to be extinct.


Lists of prehistoric molluscs


Ammonites by classification


Prehistoric mollusc taxonomy


Phylogeny of pterosaurs

This phylogeny of pterosaurs entails the various phylogenetic trees used to classify pterosaurs throughout the years and varying views of these animals. Pterosaur phylogeny is currently highly contested and several hypotheses are presented below.


Plesiosaur-related lists



Encyclopedic dictionary