Cleistosphinctes
| Cleistosphinctes Temporal range:
| |
|---|---|
| Scientific classification | |
| Kingdom: | |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | |
| Order: | |
| Superfamily: | Perisphinctaceae |
| Family: | |
| Genus: | Cleistosphinctes
|
Cleistosphinctes is an extinct
Jurassic.[1]
Cleistosphinctes, named by Arkell, 1953, and included in the family Perisphinctidae and superfamily
Perisphinctaceae
, is small, compressed, evolute, with long secondary ribs and very large asymmetric spatulate lappets that embrace the sides of the preceding whorl.
References
- ^ a b Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Cephalopoda entry)". Bulletins of American Paleontology. 363: 1–560. Archived from the original on 2008-05-07. Retrieved 2017-10-18.
- Treatise on Invertebrate Paleontology, Part L Ammonoidea; Geological Society of America and Univ of Kansas press, 5th printing, 1990. (p. L314)
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