I could swear I have built all of those in Spore at some point.

*removed externally hosted image*

First one looks like an urchin with pattern baldness

Or, just like dinossaurs, we don't know how they actually looked like because fossile records only contain bones.

It's just a phase.

My favourite is Sharovipteryx with the wing on its hind legs.

What an unusual shrimp.