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Family:Mosasauridae Genus:Ectenosaurus

FHSM VP-401
Ectenosaurus clidastoides (Merriam, 1894)
Formation: Niobrara
Period(Early): Cretaceous

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FHSM VP-5515
Ectenosaurus everhartorum (Willman et al., 2021)
Formation: Niobrara
Period(Early): Cretaceous

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FHSM VP-13746
Ectenosaurus (Russell, 1967)
Formation: Niobrara
Period(Early): Cretaceous

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