Dimorphoceratoidea is one of seventeen
superfamilies included in the ammonoid suborder
Goniatitina
Goniatitina is one of two suborders included in the order Goniatitida; extinct Paleozoic ammonoid cephalopods only distantly related to the Nautiloidea.
Taxonomy
The Goniatitina contains 17 defined superfamilies, listed below.
* Adrianitoidea ...
, a variety of shelled cephalopods that lived during the late Paleozoic.
The Dimorphoceratoidea can be described as Goniatitina with subdiscoidal to lenticular shells that have conspicuous closed umbilici and goniatitic sutures with long prominently bifid ventral lobes and more or less subdivided external lobes.
References
* Miller, A.K. ''et al''. Paleozoic Ammonoidea.
Treatise on Invertebrate Paleontology
The ''Treatise on Invertebrate Paleontology,'' published from 1953–2007 by the Geological Society of America and the University of Kansas, then 2009–present by the University of Kansas Paleontological Institute, is a definitive multi-authore ...
. Geological Society of America and University Kansas Press.
* Dimorphoceratoidea i
GONIAT Online5/30/12
The Paleobiology Database 10/01/07
Goniatitida superfamilies
Goniatitina
{{Goniatitida-stub