Trachyteuthis

Trachyteuthis; Temporal range:
	Trachyteuthis hastiformis diagram depicting soft tissue and gladius
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Order:	Vampyromorpha
Family:	†Trachyteuthididae
Genus:	†Trachyteuthis; Meyer, 1846
Type species
	†Trachyteuthis hastiformis; Rüppel, 1829
Other species
	†T. latipinnis (Owen, 1855); †T. palmeri (Schevill, 1950); †T. zhuravlevi (E. L. Hecker & R- F- Hecker, 1955); †T. nusplingensis (Fuchs et al., 2007); †T. teudopsiformis (Fuchs et al., 2007); †T. covacevichi (Fuchs and Schultze, 2008); †T. chilensis (Riccardi, 2016); †T. bacchiai (Fuchs & Larson, 2011);
Synonyms
	Coccoteuthis ; Owen, 1855;

Trachyteuthis (meaning "rough squid") is an extinct genus of octobrachian cephalopod comprising nine species with an almost global distribution, living from the Callovian to the Cenomanian age of the Mesozoic. While similar in appearance to modern squid or cuttlefish (Decapodiformes), this taxon is actually more closely related to vampire squid.