Mammals only got yeeted to their own evolutionary tree branch 40 million years prior to those that would be considered reptilian (sorta dinos too) which was somewhere in the realm of 250 million years ago.

As someone who was raised and taught to believe that the earth was only a few thousand years old (by ‘that kind’ of Christians/churches,) this still blows my mind to read! I’ve known what I was taught was bullshit for at least around fifteen years, but it’s like my little pea brain still just cannot compute it. Wild stuff!!