Trinacromerum
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Trinacromerum Fossil range: Late Cretaceous |
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Trinacromerum bentonianum from the Late Cretaceous of Kansas
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Trinacromerum is an extinct genus of sauropterygian reptile belonging to the plesiosaur suborder. It lived during the Late Cretaceous period in what is now Kansas. It was 3 meters (10 feet) long. Its teeth show it fed on small fish.