>>5035603
>Real question is, when did the theropsids get fur?

Dunno, but it makes them look a million times more charming. Very cute. Very debonair. Good "pick up and put in my lap" texture. It's just infinitely better character design, so I'm gonna assume it's true.

>>5035892
>>5035974

My only contribution is I know that glass sponges used to be huge reef building organisms during the Triassic, but then went extinct (possibly due to changing availability of silicas/some mineral or element?) and replaced by rudists/bivalves/something.
However, as recently as 2018 it was revealed they not only weren't extinct, but they were existing in 'refugia' as reef builders in the bottom of the coasts of the pacific northwest. All the way up and down the Strait of Georgia, as far north as Alaska and as far south as Washington. A veritable "coelacanth" moment.

>>5035878
>but predatory species like the Panderodus had crazy mouths for a jawless animal.
>It's literally just enormous, spiky, American-horror-movie-monster-design teeth sticking out.

Marvelous. I'm glad it's dead.