Anahamulina

Anahamulina is an extinct ammonoid cephalopod genus from the Lower Cretaceous. Named by Hyatt, 1900.

Anahamulina Temporal range: Hauterivian–Barremian[1] PreꞒ Ꞓ O S D C P T J K Pg N
Anahamulina subcylindrica, Lower Barremian, Brestak, (Coll. St. Breskovski) at the Sofia University 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 botevensis sp. n., Lower Barremian, Botevo, Varna Province, Cr1 1595X1 at the SUMPHG

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.