Trachyteuthis hastiformis

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Trachyteuthis hastiformis Fossil range: Jurassic
Restoration of Trachyteuthis hastiformis.
Scientific classification
Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Subclass: Coleoidea Superorder: Octopodiformes Order: incertae sedis Family: Trachyteuthididae Subfamily: Trachyteuthidinae Naef, 1921 Genus: Trachyteuthis Species: T. hastiformis
Binomial name
Trachyteuthis hastiformis (Rüppel, 1828)

Trachyteuthis hastiformis is an extinct species of cephalopod, currently the only member of its genus.

The taxonomic placement of Trachyteuthis is uncertain. Though often assigned to the order Vampyromorphida, the discovery of fossilised Trachyteuthis beaks in the Upper Jurassic limestone of Germany suggests a close phylogenetic relation to the Octopoda (Klug et al. 2005; see also Fischer & Riou 2002) .

Fossilised cuttlebone-like structure of T. hastiformis

[edit] References

• Fischer, Jean-Claude & Riou, Bernard (2002): Vampyronassa rhodanica nov. gen. nov sp., vampyromorphe (Cephalopoda, Coleoidea) du Callovien inférieur de la Voulte-sur-Rhône (Ardèche, France). Annales de Paléontologie 88(1) 1−17. [French with English abstract] doi:10.1016/S0753-3969(02)01037-6 (HTML abstract)
• Klug, C.; Schweigert, G.; Dietl, G. & Fuchs, D. (2005). Coleoid beaks from the Nusplingen Lithographic Limestone (Upper Kimmeridgian, SW Germany). Lethaia 38(3): 173-192. doi:10.1080/00241160510013303 (HTML abstract)

[edit] External links

• Fischerverlag Jena aus Adolf Naef "Die Fossilen Tintenfische" 1922
• The Taxonomicon: Order Vampyromorphida
• Mikko's Phylogeny Archive: Vampyromorpha