ammonites
Girtyspira pygmaea Weller 1916 (snail)

Gastropoda - Prosobranchia - Meekospiridae

Alternative combination: Bulimorpha pygmaea

Full reference: S. Weller. 1916. Description of the Ste. Genevieve limestone fauna from Monroe County, Illinois. Contributions of the Walker Museum, University of Chicago 1:243-265

Belongs to Girtyspira according to E. L. Yochelson and B.W. Saunders 1967

Sister taxa: Girtyspira alvaensis, Girtyspira canaliculata, Girtyspira delicata, Girtyspira fusiformis, Girtyspira germanica, Girtyspira inflata, Girtyspira lineata, Girtyspira mediocris, Girtyspira micra, Girtyspira microspirula, Girtyspira minuta, Girtyspira yodai

Type specimen: Its type locality is Bed No. 8, Fountain Creek, 2 miles southwest of Waterloo, which is in a Chesterian carbonate limestone in the Ste. Genevieve Formation of Illinois.

Ecology: epifaunal