The oldest extinct mammal is one that lived among the dinosaurs. There are new mammals that are being discovered regularly.
I guess the wooly mammoth, which is extinct.
There is no such thing. No bird is or ever was a mammal.
mastodon
black ppl
No, a helicoprion is an extinct fish.
human
The oldest sea mammal that is in existence today is the bowhead whale They are also the largest mammal on the planet and live longer than any other animal alive today.
The Saber-toothed Tiger is an example of an extinct mammal. It was about the size of a modern day Lion. It once roamed the grasslands and forests of North and South America.
Any creature can go extinct, but this mammal is currently abundant.
because of the meteor
An andrewsarchus is an extinct mammal belonging to the Eocene epoch.
platypus