Cornwallius is an extinct herbivorous marine mammal of the family Desmostylidae. Cornwallius lived along the North American Pacific Coast from the Early Oligocene (Chattian) into the Early Miocene (28.4 mya—20.6 Mya) and existing for approximately .
Cornwallius is an extinct herbivorous marine mammal of the family Desmostylidae. Cornwallius lived along the North American Pacific Coast from the Early Oligocene (Chattian) into the Early Miocene (28.4 mya—20.6 Mya) and existing for approximately .
The type locality is the Chattian Sooke Formation, Vancouver Island, British Columbia, Canada (, paleocoordinates ).
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).