It persisted until the Late Palaecene in North America , and has also been found in the Late Paleocene of France .
The earliest records of Simoedosaurus are from the Early Paleocene ( Puercan Land Mammal Age ) of Saskatchewan .
Simoedosaurus persisted until the Late Palaecene in North America , and has also been found in the Late Early Paleocene of France .
The earliest records of Simoedosaurus are from the Early Paleocene ( Puercan Land Mammal Age ) of Saskatchewan .