There are 2 matches

Collection Authorizer Collection name Reference
93219R. Butler Twin Butte Creek (= Pteranodon umbrosus holotype / coll. Cope 1871) Late Coniacian/Santonian - Cretaceous 6 - Kansas Cope (1872)
93225R. Butler Twin Butte Creek (= Pteranodon harpyia holotype / coll. Cope 1871) Santonian - Cretaceous 6 - Kansas Cope (1872)

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