Trichiurus is a genus of cutlassfishes belonging to the family Trichiuridae.

Species Species within this genus include:

Trichiurus auriga, Klunzinger, 1884 (Pearly hairtail) Trichiurus australis Chakraborty, Burhanuddin & Iwatsuki, 2005 Trichiurus brevis, Wang & You, 1992 (Chinese short-tailed hairtail) Trichiurus gangeticus, Gupta, 1966 (Ganges hairtail) Trichiurus japonicus, Temminck & Schlegel, 1844 (Japanese cutlassfish) Trichiurus lepturus, Linnaeus, 1758 (Largehead hairtail) Trichiurus margarites, Li, 1992 Trichiurus nanhaiensis, Wang & Xu, 1992 Trichiurus nickolensis, Burhanuddin & Iwatsuki, 2003 (Australian short-tailed hairtail) Trichiurus nitens, Garman, 1899 Trichiurus russelli, Dutt & Thankam, 1966 (Short-tailed hairtail)

Extinct species Extinct species within this genus include: Trichiurus miocaenus Delfortrie, 1876 Trichiurus oshoshunensis White, 1926 Trichiurus plicidens Arambourg, 1952

Extinct species lived from the Eocene epoch to the Quaternary period, approximately from 48.6 to 0.012 million years ago. Fossils have been found in the Eocene sediments of Antarctica, Nigeria, United Kingdom, United States, in the Miocene of Costa Rica, India, Mexico, Panama, Slovakia and in the Quaternary of United States.

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