| Tusoteuthis Temporal range:
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|---|---|
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| Interpretation of holotype specimen, actual material shown as dark grey. | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Order: | Octopoda |
| Family: | †Muensterellidae |
| Genus: | †Tusoteuthis Logan, 1898 |
| Type species | |
| †Tusoteuthis longa Logan, 1898
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| Synonyms | |
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Tusoteuthis is an extinct genus of large enchoteuthine cephalopod that lived during the Cretaceous. Although often called a squid, it is now thought to be more closely related to modern octopuses. Although many specimens from Western Interior Seaway of North America were described, at 2019, only one, poorly preserved specimen from Kansas is recognized as Tusoteuthis. One species, T. longa, is traditionally recognized. In 2019, due to poor preservation of holotype specimen, Tusoteuthis was considered likely to be a nomen dubium, and it was proposed that later described species are better to included in genus Enchoteuthis instead.[1]
- ^ Fuchs, Dirk; Iba, Yasuhiro; Heyng, Alexander; Iijima, Masaya; Klug, Christian; Larson, Neal L.; Schweigert, Günter (2020). Brayard, Arnaud (ed.). "The Muensterelloidea: phylogeny and character evolution of Mesozoic stem octopods". Papers in Palaeontology. 6 (1): 31–92. doi:10.1002/spp2.1254. ISSN 2056-2802. S2CID 198256507.