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Genus: | †Tetracus Aymard 1850 |
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†Tetracus nanus Aymard, 1846 |
Tetracus is an extinct genus of gymnures. Species are from the Oligocene of Belgium and France. Fossils can also be found in the Bouldnor Formation in the Hampshire Basin of southern England.
Species:
Hyaenodon ("hyena-tooth") is an extinct genus of carnivorous placental mammals from extinct tribe Hyaenodontini within extinct subfamily Hyaenodontinae, that lived in Eurasia and North America from the middle Eocene to early Miocene.
Pachycrocuta is an extinct genus of prehistoric hyenas. The largest and most well-researched species is Pachycrocuta brevirostris, colloquially known as the giant short-faced hyena as it stood about 90–100 cm (35–39 in) at the shoulder and it is estimated to have averaged 110 kg (240 lb) in weight, approaching the size of a lioness, making it the largest known hyena. Pachycrocuta first appeared during the late Miocene. By 800,000 years ago, it became locally extinct in Europe and became completely extinct during the middle Pleistocene, 400,000 years ago.
Teleosaurus is an extinct genus of teleosaurid crocodyliform found in the Middle Jurassic Calcaire de Caen Formation of France. It was approximately 3 metres (10 ft) in length and weighed 60 kg (130 lb). The holotype is MNHN AC 8746, a quarter of a skull and other associated postcranial remains, while other fragmentary specimens are known. The type species is T. cadomensis, but a second species, T. geoffroyi may also exist. It was previously considered a wastebasket taxon, with many other remains assigned to the genus.
Lymnaea is a genus of small to large-sized air-breathing freshwater snails, aquatic pulmonate gastropod mollusks in the subfamily Lymnaeinae ( of the family Lymnaeidae, the pond snails.
Crassispira is a genus of small predatory sea snails with narrow, high-spired shells, marine gastropod mollusks in the family Pseudomelatomidae.
Muricopsis is a genus of small predatory sea snails, marine gastropod mollusks in the rock snail family, Muricidae.
Chrysallida is a speciose genus of minute sea snails, pyramidellid gastropod mollusks or micromollusks in the family Pyramidellidae within the tribe Chrysallidini.
Drillia is a genus of small sea snails, marine gastropod mollusks in the family Drilliidae.
Raphitoma is a genus of sea snails, marine gastropod mollusks in the family Raphitomidae.
Mangelia is a large genus of sea snails, marine gastropod mollusks in the family Mangeliidae.
Palaeogale is an extinct genus of carnivorous mammal known from the Late Eocene, Oligocene, and Early Miocene of North America, Europe, and Eastern Asia. A small carnivore often associated with the mustelids, Palaeogale might have been similar to living genets, civets, and linsangs.
Eucithara is a genus of small to quite large sea snails, marine gastropod mollusks in the family Mangeliidae.
Propeamussium is a genus of saltwater clams, marine bivalve mollusks in the order Ostreoida.
Auguste Aymard was a French prehistorian and palaeontologist who lived and died in Puy-en-Velay (Haute-Loire). He described the fossil Entelodon magnus and the fossil genera Anancus and Amphechinus. Auguste Aymard was the archivist for the Departement Haute-Loire and Conservateur of Musée du Puy-en-Velay. He made archaeological discoveries in Puy-en-Velay, Polignac, Haute-Loire and Espaly-Saint-Marcel.
Neurogymnurus is an extinct genus of gymnures. Species are from the Miocene of Turkey and the Oligocene of the Czech Republic, France, Kazakhstan and Turkey.
Choilodon is an extinct genus of ruminants possibly in the family Tragulidae (chevrotains). The type species, C. elegans, was found in phosphorites in Quercy, France.
Amphicynodontidae is a probable clade of extinct arctoids. While some researchers consider this group to be an extinct subfamily of bears, a variety of morphological evidence links amphicynodontines with pinnipeds, as the group were semi-aquatic otter-like mammals. In addition to the support of the pinniped–amphicynodontine clade, other morphological and some molecular analyses support bears being the closest living relatives to pinnipeds. According to McKenna and Bell (1997) Amphicynodontinae are classified as stem-pinnipeds in the superfamily Phocoidea. Fossils of these mammals have been found in Europe, North America and Asia. Amphicynodontines should not be confused with Amphicyonids (bear-dogs), a separate family of Carnivora which is a sister clade to arctoids within the caniforms, but which may be listed as a clade of extinct arctoids in older publications.
Metaxyonycha is a genus of leaf beetles in the subfamily Eumolpinae.
Le Talisman was a French Navy sloop built at Le Havre in 1862 which was used for geological, biological and hydrological exploration in the Atlantic Ocean and Mediterranean Sea at the end of the 19th century. It first served as a communications vessel ("aviso"), and was both sail and propeller driven.