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 Ammonoidea, ammonoid cephalopods only distantly related to the Nautiloidea.
Taxonomy
The Goniatitina contains 17 defined superfamilies, listed below.
* Adr ...
, 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. 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