Gastropoda - Pyramidelloidea - Streptacididae

Alternative combination: Ptychomphalus fountainensis

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 Donaldina according to P. J. Wagner 2011

Sister taxa: Donaldina americana, Donaldina attenuata, Donaldina barnetti, Donaldina bellilineata, Donaldina costatula, Donaldina filosa, Donaldina gigantea, Donaldina gracilis, Donaldina grantonensis, Donaldina knighti, Donaldina marigoldensis, Donaldina media, Donaldina nana, Donaldina ohioensis, Donaldina pulchra, Donaldina pygmaea, Donaldina quadrata, Donaldina quinquecarina, Donaldina robusta, Donaldina stevensana, Donaldina swallowiana, Donaldina texana, Donaldina zadoe, Donaldina zardinii

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 carnivore