Anahamulina
Anahamulina Temporal range:
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Anahamulina subcylindrica (d'Orbigny), Lower Barremian, Brestak, (Coll. St. Breskovski) at the Sofia University "St. Kliment Ohridski" Museum of Paleontology and Historical Geology | |
Scientific classification ![]() | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Cephalopoda |
Subclass: | †Ammonoidea |
Order: | †Ammonitida |
Suborder: | †Ancyloceratina |
Family: | †Hamulinidae |
Genus: | †Anahamulina Hyatt, 1900 |
Species | |
See text |
Anahamulina is an extinct ammonoid cephalopod genus from the Lower Cretaceous. Named by Hyatt, 1900.
Description
Anahamulina is characterized by an increasingly wide shaft that bends sharply to the opposite direction, at some point ending in a shorter terminal section. The two sections are not in lateral contact.[2] The first, and earlier, shaft has fine, dense, oblique ribs, which in the second, and later, shaft are stronger and more radial.
Two species are recognized. The type Anahamulina subcylindrica, named by Hyatt, 1900, is based on Hamulina subcylindrica d'Orbigny 1850.
Distribution
It is found in Europe and Japan. Anahamulina wilcoxensis named by Imlay, 1960, is known from California and Oregon.
References
- ^ Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Retrieved 2014-05-28.
- ^ Wright, C. W. with Callomon, J.H. and Howarth, M.K. (1996), Mollusca 4 Revised , Cretaceous Ammonoidea, vol. 4, in Treatise on Invertebrate Paleontology, Part L (Roger L. Kaesler et el. eds.), Boulder, Colorado: The Geological Society of America & Lawrence, Kansas: University of Kansas Press, pp. 231, 232.
External links
- Arkell et al., 1957. Mesozoic Ammonoidea (L215); Treatise on Invertebrate Paleontology Part L Ammonoidea. Geological Soc. of America and Univ Kansas Press
- "Anahamulina". The Paleobiology Database. Retrieved 1 May 2022.
- "Anahamulina Hyatt, 1900". Global Biodiversity Information Facility (GBIF). Retrieved 1 May 2022.
- "Anahamulina". mindat.org. Retrieved 2 May 2022.
![](https://upload.wikimedia.org/wikipedia/commons/thumb/3/3d/Anahamulina_botevensis_sp._n.%2C_Lower_Barremian%2C_Botevo%2C_Varna_Province%2C_Cr1_1595X1_at_the_Sofia_University_%27St._Kliment_Ohridski%27_Museum_of_Paleontology_and_Historical_Geology.jpg/200px-thumbnail.jpg)
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- Early Cretaceous ammonites of North America
- Ammonitida genera
- Ancyloceratoidea