Protostega gigas Location: Carnegie Museum of Natural History, Pittsburgh, PA Year: 2010 Merckdigitals catalogue number: 22-74592 Comments: Cretaceous

Protostega gigas Location: U. S. National Museum of Natural History, Washington, DC Year: 2011 Merckdigitals catalogue number: 22-77179 Comments: Late Cretaceous, KS

Protostega gigas Location: U. S. National Museum of Natural History, Washington, DC Year: 2011 Merckdigitals catalogue number: 22-77180 Comments: Late Cretaceous, KS

Protostega gigas Location: U. S. National Museum of Natural History, Washington, DC Year: 2011 Merckdigitals catalogue number: 22-77181 Comments: Late Cretaceous, KS

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