The untamed wilderness of prehistoric North America was a realm where terrifying prehistoric creatures reigned supreme ... enough to wander too close to the water. With a bite force rivaling ...

The animals constantly grew new shell material ... which scientists believe helped provide buoyancy and move ammonites through the water. It’s unclear whether ammonites were very efficient ...

The footprints are the first clear evidence that the two hominin species shared a habitat, raising questions about whether their interactions shaped human evolution.

or maybe retain the original Ice/Water-type features of the original Walrein. Fan-made past Paradox forms for creatures that resemble prehistoric animals are not uncommon in the Pokemon community.