Eutrichiurides is an extinct genus of prehistoric cutlass fish. Similar and related genera include the extant Aphanopus, Trichiurides and Trichiurus. These fishes lived in the Eocene period, from 55.8 to 48.6 mya. Species Species within this genus include: Eutrichiurides orpiensis (Leriche, 1906) Eutrichiurides goberti (Casier, 1944) Eutrichiurides termieri (Arambourg) Eutrichiurides delheidi (Leriche, 1908) Description Eutrichiurides species were very similar in form and build to modern snake mackerels, in that they were long and slender, blade-shaped fishes with elongated jaws possessing fangs and needle-shaped teeth. Distribution Fossils of Eutrichiurides have been found the Eocene fossil sediments of India, Pakistan and the United Kingdom. See also Prehistoric fish List of prehistoric bony fish References Prehistoric perciform genera Paleogene fish of Asia