First prehistoric animal on cave painting

MONACO, 1949

In 1949, the Monaco post issued a set of stamps, one of which is dedicated to the palaeo-anthropological institute of this small state. The illustration shows an aurochs from the famous Lascaux cave.
It is a bit of a borderline case, but I have decided to include it here.
Although the aurochs became extinct in historic times, it has a good palaeontological record. The stone age men that created the West European cave painting belong to Homo sapiens, but lived in prehistoric times.