There are 5 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 93225 | R. Butler | Twin Butte Creek (= Pteranodon harpyia holotype / coll. Cope 1871) Santonian - Cretaceous 6 - Kansas | Cope (1872) |
| 167919 | M. Carrano | Hackberry Creek Valley (coll. Sternberg 1905) Santonian - Cretaceous 6 - Kansas - old id | Wieland (1909) |
| 203740 | E. Vlachos | near Butte Creek (= Protostega gigas type locality / coll. Cope 1871) Late Coniacian/Santonian - Cretaceous 6 - Kansas | Cope (1871) |
| 203741 | E. Vlachos | near Elkader (coll. Martin 1897) Late Santonian - Cretaceous 6 - Kansas | Hay (1908) |
| 203742 | E. Vlachos | Niobrara (= Protostega advena type locality) Santonian - Cretaceous 6 - Kansas - old id | Hay (1908) |