Gonionautilidae

Gonionautilidae is a family in the nautilid superfamily Clydonautiliaceae that contains only the genus Gonionautilus, known from the Upper Triassic (Norian) of Europe and North America. (Alps, state of Nevada)

Gonionautilidae
Temporal range: U Triassic (Nor)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Nautiloidea
Order: Nautilida
Superfamily: Clydonautiloidea
Family: Gonionautilidae
Kummel, 1950

Gonionautilus has a smooth, compressed involute shell with a narrow flattened venter and angular ventral shoulders. The suture resembles that of Clydonautilus, from which it must have been derived, except for the more highly developed median saddle and bifurcated dorsal lobe.

Gonionautilus (Gonionautilidae) is one of a number of advanced nautiloid cephalopods that developed sutures resembling those of some goniatites in the Ammonoidea.

References

    This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.