This blog is a result of an erroneous claim; one day I referred to Dimetrodon as a mammal-like reptile in front of a vertebrate paleomammalogist. These animals are not at all members of Reptilia; they are Synapsids - four-legged, back-boned animals that span back 315 million years on a completely different evolutionary branch of the tree of life. We even made a video about it: Dimetrodon is Not a Dinosaur.

Since then, I've found Dimetrodon partying with members of Dinosauria across the pages of coloring books and frolicking in the aisles of toy stores, surrounded by lifeforms which evolved some 66 million years after those ancient mammalian relatives.

Submit your photos of any number of creatures - Synapsids, Pterosaurs, Ichthyosaurs - that have been tragically mislabeled. For funsies.

This blog was created and is managed by Emily Graslie of The Brain Scoop.