Abstract:A New Decapoda (Natantia, Malacostraca, Crustacea) From the Riachuelo Formation, Albian of the Sergipe Basin A "lobster" fossil from the Riachuelo Formation, Sergipe Sub-basin, is here described and placed in the Decapoda, Infraorder Palinura, based on the flattened carapace and the well-developed abdomen. The specimen is characterized by a dorsal median keel and a keel in each margin of the carapace and abdomen. Field data and petrographic studies suggest that the environment in which the Decapoda lived was p… Show more
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