The Seas of the Mesozoic from the Dinosaur Collector

The MIIDDLE and LATE JURASSIC Sea

Marine crocodiles and the first sea turtles are present appear.

Updated 1/10/2011

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Modern crocs use their tails not their limbs to swim. Metriorhynchus the Middle to Late Jurassic, legs look like flimsy flippers in most reconstructions. This maybe a product of the deformation after fossilization. There are fossil finds that indicate a flat functional foot. There is no evidence at all that Metriorhynchus laid its eggs anywhere but on land so a more functional foot would have been useful. The first fully aquatic crocodyliforms that lived in seas of the Jurassic and Cretaceous periods. teleosaurids were marine crocodyliforms similar to the modern gharial that lived from the Early Jurassic to the Early Cretaceous. They had long snouts, indicative of piscivory (fish eating) and were the closest relatives to the Metriorhynchidae,

UHA Kaiyodo Metriorhynchus.

Metriorhynchus from Safari

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