Anahamulina
{{Short description|Genus of molluscs (fossil)}}
{{Automatic taxobox
|fossil_range = {{fossil range|Hauterivian|Barremian|ref={{cite web
| last = Sepkoski| first = Jack| title= Sepkoski's Online Genus Database| year = 2002| url = http://strata.geology.wisc.edu/jack/showgenera.php?taxon=231&rank=class| accessdate = 2014-05-28 }}}}
|image = Anahamulina subcylindrica (d'Orbigny), Lower Barremian, Brestak, (Coll. St. Breskovski) at the Sofia University 'St. Kliment Ohridski' Museum of Paleontology and Historical Geology.jpg
|image_caption = Anahamulina subcylindrica, Lower Barremian, Brestak, (Coll. St. Breskovski) at the Sofia University Museum of Paleontology and Historical Geology
|taxon = Anahamulina
|authority = Hyatt, 1900
|subdivision_ranks = Species
|subdivision = See text
}}
File:Anahamulina botevensis sp. n., Lower Barremian, Botevo, Varna Province, Cr1 1595X1 at the Sofia University 'St. Kliment Ohridski' Museum of Paleontology and Historical Geology.jpg, Botevo, Varna Province, Cr1 1595X1 at the SUMPHG]]
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.{{aut|Wright, C. W.}} with {{aut|Callomon, J.H.}} and {{aut|Howarth, M.K.}} (1996), Mollusca 4 Revised , Cretaceous Ammonoidea, vol. 4, in Treatise on Invertebrate Paleontology, Part L (Roger L. Kaesler ed.), Boulder, Colorado: The Geological Society of America & Lawrence, Kansas: University of Kansas Press, pp. 231, 232. 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
{{Reflist}}
External links
- {{cite web |url=https://www.mindat.org/taxon-4626462.html |publisher= mindat.org |title= Hamulina |accessdate= 2 May 2022}}
- {{cite book |last= Wright C.W. with J.H. Callomon and M.K. Howarth |year= 1996 |chapter= Mollusca 4 Revised: Cretaceous Ammonoidea |volume = 4 |title= Treatise on Invertebrate Paleontology Part L |editor = Roger L. Kaesler |place= Boulder, Colorado and Lawrence, Kansas |publisher= The Geological Society of America & University of Kansas Press |url= https://archive.org/details/treatiseoninvert0000join/page/n3/mode/2up?view=theater |url-access= registration |page = [https://archive.org/details/treatiseoninvert0000join/page/231/mode/2up?view=theater 231-232] |via= Internet Archive}}
- * {{cite book |author1= Arkell, W. J. |author2= Furnish, W. M. |author3= Kummel, Bernhard |author4= Miller, A.K. |author5= Moore, R.C. |author6= Schindewolf, O.H. |year= 1957 |chapter= Part L, Mollusca 4: Cephalopoda, Ammonoidea |title= Treatise on Invertebrate Paleontology |publisher= Geological Society of America and University of Kansas Press |editor= Raymond C. Moore |editor-link= Raymond Cecil Moore |url= https://archive.org/details/treatiseoninvert0000unse_n4o3/page/n3/mode/2up?view=theater |url-access= registration |page= [https://archive.org/details/treatiseoninvert0000unse_n4o3/page/214/mode/2up?view=theater L215] |via= Internet Archive}}
- {{cite web |url= https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=14549&is_real_user=1|publisher= The Paleobiology Database |title= Anahamulina |accessdate= 1 May 2022}}
- {{cite web |url= https://www.gbif.org/species/4626460|publisher= Global Biodiversity Information Facility (GBIF) |title= Anahamulina Hyatt, 1900|accessdate= 1 May 2022}}
- {{cite web |url= https://www.mindat.org/taxon-4626460.html |publisher=mindat.org |title= Anahamulina |accessdate= 2 May 2022}}
{{Taxonbar|from=Q3728076}}