''Tetracus'' is an extinct genus of

gymnure Gymnures, also called hairy hedgehogs or moonrats, are mammals belonging to the subfamily Galericinae, in the family Erinaceidae and the order Eulipotyphla. Gymnures resemble rats but are not closely related as they are not rodents; they are in ...

s. Species are from the Oligocene of Belgium and France. Fossils can also be found in the

Bouldnor Formation The Bouldnor Formation is a geological formation in the Hampshire Basin of southern England. It is the youngest formation of the Solent Group and was deposited during the uppermost Eocene and lower Oligocene. Stratotype and occurrence The Bo ...

in the Hampshire Basin of southern England. Species: * †''Tetracus nanus'' (Aymard, 1846) ** synonym ''

Erinaceus ''Erinaceus'' is a genus of hedgehog from the family of Erinaceidae. There are four main species of ''Erinaceus''. The range is all across Europe, throughout the Middle East, parts of Russia, and extending to northern China and Korea. The Europe ...

nanus'' Aymard, 1846 ** synonym ''Camphotherium elegans'' Filhol, 1883, Filhol, 1884Observations relatives au Mémoire de M. Cope, intitulé: Relations des Horizons renfermant des débris d'Animaux vertébrés fossiles en Europe et en Amérique. H Filhol, 1884 ** synonym ''Comphotherium elegans'' Filhol, 1884, Filhol 1885 ** synonym ''

Gomphotherium ''Gomphotherium'' (; "nail beast" for its double set of straight tusks) is an extinct genus of gomphothere proboscidean from the Neogene of Eurasia, Africa and North America. It is the most diverse genus of gompothere, with over a dozen valid sp ...

elegans'' Filhol, 1884 in Schlosser, 1887, p. 140 and 465 and in Lavocat, 1951, p. 14 ** synonym '' Neurogymnurus minor'' Filhol, 1884 ** synonym ''Necrogymnurus minor'' in Lavocat, 1951, p. 13 ** synonym ''Tetracus bouti'' Lavocat, 1951, dans Lavocat, 1951.

References

Prehistoric placental genera Erinaceidae Oligocene mammals of Europe {{paleo-eulipotyphla-stub