There are 4 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 98972 | M. Carrano | Columbus (= Platecarpus type / coll. Spillman) Late Santonian/Early Campanian - Cretaceous 6-7 - Mississippi | Leidy (1866) |
| 123571 | P. Mannion | 7 miles southeast of Castle Rock (= Clidastes planifrons type / coll. Mudge 1873) Late Coniacian/Early Santonian - Cretaceous 6 - Kansas | Cope (1874) |
| 123572 | P. Mannion | Trego County (YPM) (= Platecarpus planifrons referred material) Late Coniacian/Early Santonian - Cretaceous 6 - Kansas | Konishi and Caldwell (2007) |
| 123574 | P. Mannion | West side of Sand Creek, Smoky Hill River (= Platecarpus planifrons referred material) Late Coniacian/Early Santonian - Cretaceous 6 - Kansas | Konishi and Caldwell (2007) |