Belongs to Williamsonia according to F. H. Knowlton 1919
Sister taxa: Williamsonia amarjolense, Williamsonia blanfordii, Williamsonia campanulatiformis, Williamsonia delawarensis, Williamsonia elocata, Williamsonia gallinacea, Williamsonia gigas, Williamsonia guptae, Williamsonia harrisiana, Williamsonia indica, Williamsonia kakadbhitensis, Williamsonia marylandica, Williamsonia microps, Williamsonia oregonensis, Williamsonia recentior, Williamsonia riesii, Williamsonia sahnii, Williamsonia santalensis, Williamsonia seniana, Williamsonia sewardiana, Williamsonia smockii, Williamsonia sukhpurensis, Williamsonia texana, Williamsonia trambauensis, Williamsonia virginiensis
Type specimen: Its type locality is Hay Creek, which is in a Cretaceous fluvial-lacustrine horizon in the Cretaceous Formation of Wyoming
Distribution: found only at Hay Creek
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.