Goniatitoidea, formerly Goniatitaceae in older publications, is a superfamily of late Paleozoic
ammonoid
Ammonoids are extinct, (typically) coiled-shelled cephalopods comprising the subclass Ammonoidea. They are more closely related to living octopuses, squid, and cuttlefish (which comprise the clade Coleoidea) than they are to nautiluses (family N ...
cephalopods included in the
Goniatitida
Goniatids, informally goniatites, are ammonoid cephalopods that form the order Goniatitida, derived from the more primitive Agoniatitida during the Middle Devonian some 390 million years ago (around Eifelian stage). Goniatites (goniatitids) su ...
. They are characterized by thinly discoidal to globular shells with variable umbilici and sculpture. The ventral lobe, located along the outer margin, is prominently bifurcated (two pronged); the lateral lobe undivided.
References
* Miller, Furnish, and Schindewolf 1957. Paleozoic Ammonoidea; ''Treatise on Invertebrate Paleontology'', Part L Ammonoidea; Geologocial Society of America and Univ. of Kansas Press.
Goniatitoideahttps://archive.today/20120911185117/http://www.paleodb.org/ Paleo db] 9/07/2013
*Goniatitoidea in GONIAT Taxonomy onlin
Goniatitoidea,
Goniatitida superfamilies
Goniatitina
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