allowing them to survive in cold waters

face off in a barren and desolate setting

Findings and discoveries:

Francia y Alemania

the Edmonton River bed in Alberta

Dorudon atrox Paleozoico superior allowing them to survive inDorudon atrox is an extinct species of cetacean mammal that belongs to the Basilosauridae group. Cetaceans are a group of marine mammals that includes whales, dolphins, and porpoises. The Basilosauridae are a family of archaic cetaceans that lived during the Eocene, approximately 40 to 35 million years ago. The name "Dorudon" comes from the Greek term "dory" which means spear, and "odon" which means tooth, referring to the sharp teeth it possessed.