Full reference: J. A. Holman. 1976. Snakes of the Gering Formation (lower Miocene) of Nebraska. Herpetologica 32:88-94
Sister taxa: none
Type specimen: UNSM 04521, a set of vertebrae (a single trunk vertebra). Its type locality is Durnal Ranch Quarry, which is in a Geringian terrestrial horizon in the Gering Formation of Nebraska.
Distribution: found only at Durnal Ranch Quarry
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.