#ammonellipsitinae
Ammonellipsitinae
Extinct subfamily of molluscs
The Ammonellipsitinae is a subfamily within the Pericyclidae, a family within the goniatitid superfamily Pericycloidea from the Lower Carboniferous (Mississippian) characterized by having a suture in which the sides of the ventral lobe diverge and the first lateral saddle is acute or subacute, and in which the immature and juvenile shell has a wide umbilicus.
Sat 22nd
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