Guhsania
Appearance
Guhsania Temporal range:
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Genus: | Guhsania McLearn, 1926
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Guhsania is an extinct ammonoid cephalopod genus that lived during the early Middle Jurassic, (early Bajocian),[1] from about 171.5 to 173.5 Ma.
Guhsania belongs to the Sonniniidae, a member of the hildoceratacean superfamily. The shell (conch): essentially involute and ribbed throughout, umbilical edge sharp, outer whorl oxyconic.[2]
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.
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suggested) (help) - ^ Treatise on Invertebrate Paleontology, Part L, 1957. p.L270