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Sphenosuchia is the name of the clade of crocodylians that first evolved. They were small to medium sized terrestrial runners built similarly to greyhounds. They had a worldwide distribution during the Late Triassic and Early Jurassic.
Genera Genera included within Sphenosuchia include Sphenosuchus, Trialestes and Macelognathus. | |||||||||||||||||||||||||
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