Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Spiralia
Cladus: Lophotrochozoa
Phylum: Mollusca
Classis: Cephalopoda
Subclassis: † Ammonoidea
Ordo: †Goniatitida
Subordo: Tornoceratatina
Superfamilia: Prionocerataceae
Familia: † Prionoceratidae
Subfamilia: † Karagandoceratinae
Genus: † Karagandoceras
Species: † K. galeatum
Name
Karagandoceras Librovitch, 1940: 88
Type species: Karagandoceras galeatum Librovich, 1940: 90, 254 (original designation)
References
Primary references
Librovitch, L.S. 1940. Ammonoidea iz kamennougol'nykh otlozhenii Severnogo Kazakhstana. Paleontologiia SSSR 4(9,1): 1–395. Reference page.
Links
The Paleobiology Database Accessed 11/21/08
Karagandoceras is an ammonoid genus belonging to the goniatid family Karagandoceratidae that lived during the early Mississippian (lower Carboniferous).
Karagandoceras has an involute, lenticular shell, with an acute ventral margin. The ventral lobe of the suture is wide with subparallel to divergent sides, divided by a median saddle with a relatively wide median lobe.
Karagandoceratids, which include Karagandoceras and Mesonoceras are a rare offshoot of the Prionorceratinae that differ from their parent group by possession of an acute ventral margin and an increasingly trifid ventral lobe.
References
Paleobiology database-Karagandoceras 8/22/10
Goniat online 8/22/10
Masonoceras, a new Karaganoceratid Ammonoid from the Lower Mississippian (Lower Osagean) of Kentucky, by David M Work and Walter L Manger. Jour Paleo May 2002; v.76; no. 3; pp 574–577
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