Brancoceratidae

The Brancoceratidae is a family of ammonoid cephalopods that make up part of the Acanthocerataceae with a range etending from the Lower Albian to the Cenomanian.

Three subfamilies are included, the Brancoceratinae (L Albian - U Albian), Mojsisovicziinae (M Albian - U Albian), and Mortoniceratinae (upper M Albian - Cenomanian).

Diagnosis
Overall brancoceratid shells are typically evolute with round, oval or quadrate whorls, strong ribs and a ventral keel.

Branchoceratinae are discoidally evolute with strong simple ribs, rounded venters, and simple sutures. Includes Brancoceras, Eubrancoceras, Parabrancoceras, and Hysteroceras.

Mojsisovicziinae are generally evolute and high whorled, with strong median keels and dense ribs that curve forward toward the venter. Sutures are moderately to fairly elaborate. Genera include Mojsisoviczia, Dipoloceras, Oxytropidoceras, and Venezoliceras.

Mortoniceratinae are subevolute to subinvolute, whorls partly covering those previous to varying degree; strongly ribbed, generally with low keels; rounded, compressed, or quadrate whorl sections; and sutures with blocky primary elements. Includes Moroniceras, Arestoceras, Elobiceras, Goodhalites, and Neoharpoceras.