Avitelmessus grapsoideus is an extinct species of crab that lived during the late Cretaceous period. It is the only species in the genus Avitelmessus and is known from finds in the southeastern United States.
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Avitelmessus grapsoideus is an extinct species of crab that lived during the late Cretaceous period. It is the only species in the genus Avitelmessus and is known from finds in the southeastern United States.