la competencia con mamíferos carnívoros

indicando buena agudeza visual

following the typical pattern of the family

They lived in forested and humid areas near rivers

and constitutes one of the best examples of transition in the fossil record between exclusively swimming aquatic life and forms capable of supported movement out of the water

Protosiren fraasi Variant:Unprimed la competencia con mamíferos carnívorosProtosiren fraasi was one of the earliest marine mammals in the sirenian group, ancestors of modern manatees and dugongs. It lived during the Middle Eocene , approximately 40 million years ago, and its fossils have been found in regions of North Africa and the Middle East, including Egypt and Pakistan. This genus represents a key intermediate stage in sirenian evolution, when these animals were transitioning from a semi aquatic to a fully marine life.