Anahamulina

From Justapedia, unleashing the power of collective wisdom
Jump to navigation Jump to search

Anahamulina
Temporal range: Hauterivian–Barremian[1]
Anahamulina subcylindrica (d'Orbigny), Lower Barremian, Brestak, (Coll. St. Breskovski) at the Sofia University 'St. Kliment Ohridski' Museum of Paleontology and Historical Geology.jpg
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 e
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

  1. ^ Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Retrieved 2014-05-28.
  2. ^ 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.
Anahamulina botevensis sp. n., Lower Barremian, Botevo, Varna Province, Cr1 1595X1 at the Sofia University "St. Kliment Ohridski" Museum of Paleontology and Historical Geology

Error: "Q3728076" is not a valid Wikidata entity ID.

Retrieved from "https://justapedia.org/index.php?title=Anahamulina&oldid=1095519745"