993
Old AF
(mander.xyz)
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.
Rules
This is a science community. We use the Dawkins definition of meme.
Just for clarification, mammalia are much older.
And specifically about balls; while the Wikipedia article wasn't helpful this time, this article says it was 100 million years ago.