Abbasites

Taxobox
name = "Abbasites"
status = fossil
fossil_range = Aalenian [cite journal
last = Sepkoski
first = Jack
authorlink =
coauthors =
title = A compendium of fossil marine animal genera (entry on cephalopoda)
journal = Bulletins of American Paleontology
volume = 364
issue =
pages = p.560
publisher =
location =
date = 2002
url = http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=231&rank=class
doi =
id =
accessdate = 2007-12-29 ] (possibly to middle Bajocian) [cite web
last = Imlay
first = Ralph
authorlink =
coauthors =
title = Alaska Paleontological Database Report on Referred Fossils (Kialagvik Formation)
work =
publisher =
date = 02/12/1981
url = http://24.21.146.254/akweb2/(S(nmrg2d5511mrtwnp4scmi045))/Akpages/RefDetail.aspx?ref_id=1649
format =
doi =
accessdate = 2007-12-29 ] [cite web
last = Imlay
first = Ralph
authorlink =
coauthors =
title = Alaska Paleontological Database (Abbasites entry)
work =
publisher =
date =
url = http://24.21.146.254/akweb2/(S(wu35jhiihttd14maozexch55))/AkPages/TaxonDetail.aspx?taxon_id=5092
format =
doi =
accessdate = 01/11/08 ]
regnum = Animalia
phylum = Mollusca
classis = Cephalopoda
subclassis = Ammonoidea
ordo = Ammonitida
subordo = Ammonitina
superfamilia = Hildocerataceae [cite web
last = Haraamo
first = Mikko
authorlink =
coauthors =
title = Mikko's Phylogeny Archive entry on "†Ammonoidea"
work =
publisher =
date = 2005-11-15
url = http://www.fmnh.helsinki.fi/users/haaramo/Metazoa/Protostoma/Mollusca/Cephalopoda/Ammonoidea/Ammonoidea.htm
format =
doi =
accessdate = 2007-12-29 ]
familia = Hammatoceratidae
genus = "Abbasites"
genus_authority = Buckman, S. S. 1921 [cite web
last =
first =
authorlink =
coauthors =
title = Nomenclator Zoologicus entry on "Abbasites"
work =
publisher =
date =
url = http://www.ubio.org/NZ/detail.php?uid=84&d=1
format =
doi =
accessdate = 2007-12-29 ]
subdivision_ranks =
subdivision =

"Abbasites" is an extinct genus of Ammonite which lived during the Aalenian stage of the Jurassic Period. [cite journal
last = Sepkoski
first = Jack
authorlink =
coauthors =
title = A compendium of fossil marine animal genera (entry on cephalopoda)
journal = Bulletins of American Paleontology
volume = 364
issue =
pages = p.560
publisher =
location =
date = 2002
url = http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=231&rank=class
doi =
id =
accessdate = 2007-12-29 ] Some authors have reported the extinction of "Abbasites" at the end of that geologic stage. [cite journal
last = Sepkoski
first = Jack
authorlink =
coauthors =
title = A compendium of fossil marine animal genera (entry on cephalopoda)
journal = Bulletins of American Paleontology
volume = 364
issue =
pages = p.560
publisher =
location =
date = 2002
url = http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=231&rank=class
doi =
id =
accessdate = 2007-12-29 ] However, Ralph Imlay reports fossil finds in the Alaskan Kialagvik Formation show that "A. platystomus" and possibly other "Abbasites" species may have survive as late as the middle Bajocian stage. [cite web
last = Imlay
first = Ralph
authorlink =
coauthors =
title = Alaska Paleontological Database Report on Referred Fossils (Kialagvik Formation)
work =
publisher =
date = 02/12/1981
url = http://24.21.146.254/akweb2/(S(nmrg2d5511mrtwnp4scmi045))/Akpages/RefDetail.aspx?ref_id=1649
format =
doi =
accessdate = 2007-12-29 ] [cite web
last = Imlay
first = Ralph
authorlink =
coauthors =
title = Alaska Paleontological Database (Abbasites entry)
work =
publisher =
date =
url = http://24.21.146.254/akweb2/(S(wu35jhiihttd14maozexch55))/AkPages/TaxonDetail.aspx?taxon_id=5092
format =
doi =
accessdate = 01/11/08 ]

Classification

"Abbasites" was a member of the family Hammatoceratidae in the order Ammonitida. This genus was described originally by Buckman in 1921. [*cite web
last =
first =
authorlink =
coauthors =
title = Nomenclator Zoologicus entry on "Abbasites"
work =
publisher =
date =
url = http://www.ubio.org/NZ/detail.php?uid=84&d=1
format =
doi =
accessdate = 2007-12-29 ] Some have considered "Abbasites" to be a subgenus of "Erycites".

pecies

* "Abbasites abbas":Fossils of "A. abbas" can be found in southern Spain.
* "Abbasites platystomus":Fossils of "A. platystomus" can be found in southern Alaska.
* "Abbasites sparsicostatus" (described by Ralph Imlay)

Dubious and Invalidated

* ?"Abbasites cestiferus":Type specimen too small to be certain about classification.
* "Abbasites" challinori [cite journal
last = Westerman
first = Gerd E. G.
authorlink =
coauthors = Neville Hudson, Jack A. Grant-Mackie
title = Bajocian (Middle Jurassic) Ammonitina of New Zealand
journal = New Zealand Journal of Geology and Geophysics
volume = 43
issue =
pages = pp. 33–57
publisher = The Royal Society of New Zealand
location = New Zealand
date = 2000
url = http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=611&rank=class
doi =
id =
accessdate = 2008-01-12 ] :This species was originally thought to be closely related to "A. abbas". However, subsequent study resulted in its removal from "Abbasites" and placement into the genus "Opuatia" [cite journal
last = Westerman
first = Gerd E. G.
authorlink =
coauthors = Neville Hudson, Jack A. Grant-Mackie
title = Bajocian (Middle Jurassic) Ammonitina of New Zealand
journal = New Zealand Journal of Geology and Geophysics
volume = 43
issue =
pages = pp. 33–57
publisher = The Royal Society of New Zealand
location = New Zealand
date = 2000
url = http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=611&rank=class
doi =
id =
accessdate = 2008-01-12 ]

Phylogeny

The genus "Erycites" is believed to be ancestral to "Abbasites". However, "Abbasites" is believed to have left its own descendants in the ammonite familiy Otoitidae. [cite journal
last = Parsons
first = C. F.
authorlink =
coauthors =
title = A Systematic Revision of the Bajocian Ammonite Subfamily Sphaeroceratinae
journal =
volume =
issue =
pages = pp. 1–90
publisher = Unpublished thesis.
location =
date = 2008-05-29
url = http://www.drcolinparsons.org.uk/sphaeroceratids.pdf
doi =
id =
accessdate = 01/11/08 ]

ee also

* Ammonitida
* List of ammonites

Related Animals

* "Erycites"
* "Hammatoceras"
* "Opuatia"

References

External links

* [http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=231&rank=class Sepkoski Database's entry on Cephalopoda]
* [http://www.fmnh.helsinki.fi/users/haaramo/Metazoa/Protostoma/Mollusca/Cephalopoda/Ammonoidea/Ammonoidea.htm Mikko's Phylogeny Archive's entry on †Ammonoidea]