Permian T-Shirts

Not a dinosaur and not constrained by hetero-normative assumptions.

Comparison of the chondrichythyids Glikmanius, Diablodontus michaeledmundi, and Kaibabvenator, from Permian Arizona

During the Late Permian period (around 260 to 254 million years ago) Inostracevia and the rest of it’s family group, Gorgonopsidae were some of the largest predators on the planet, they roamed what is now Northern Russia, stalking their prey with a smiled full of sabers. Gorgonopsids were part of a group called therapsids, a group of animals that include mammals and their ancestors. They were a group that also shared common traits with reptiles but weren’t quite part of either modern group.

Dimetrodon was part of a group known as known as mammal-like reptiles or stem-mammals. While they share many traits with modern reptiles and modern mammals they are neither, but are part of the overall group called Synapsids that includes all modern mammals (even humans like you). While it is often associated with dinosaurs in popular media these sail-backed quadripeds are much older than that group and are most closely related to us than they are to dinosaurs. Dimetrodon main defining traits include a very distinctive sail supported by extensive neural spins, as well as a set of differentiating teeth that were clearly evolved to different uses, something we and most modern mammals share.

Roughly 259.8 to 254.1 million years ago during the Late Permian era in what would eventually become South Africa, deserts sands blew across an arid landscape. Meanwhile, to escape the oppressive heat and avoid predation a tiny synapsid called Diictodon (the name meaning “two weasel toothed”) used it’s stubby legs, sharp claws, and peculiar tusks to dig into their earth, constructing relatively large (for their size) corkscrew-shaped burrows, designed to protect and give them an easy route up and down.

Arthropleaura was an ancient ancestor to modern millipedes. There were many species, some measuring less than a foot and others growing up to around 8 feet in length, making them some of the largest Arthropods (invertebrates with exoskeletons such as insects, spiders, scorpions, and trilobites) to have ever lived.

Cotylorhyncus was a genus of synapsid that lived during the Permian. It is notable for a having a very disproportionate head-to-body ratio, which I assume it was probably not too happy about.

For all proud ancestors of the survivers of the great dying

A flesh-eating, early mammal-like reptile (not actually a dinosaur). About 11ft (3-5m) long. Permian, about 250 million years ago.

Dimetrodon is an awesome prehistoric baddie! If you are an adult or a kid, these retro looking designs are the coolest dinosaurs of any era! Boys and girls of any age will LOVE THEM! With and without border/background designs available! Rawr!!

Ammonite Fossil

Tupuxura Pterosaur Skull Sketch Illustration

Sweet chonky boy

Swimmers, diggers, flyers

Massive king!

Edaphosaurus was an herbivorous synapsid that lived from the Late Carboniferous to the Early Permian eras (303.4 - 272.5 MYA), they were a close relative of Dimetrodon.

Dimetrodon is an awesome prehistoric baddie! If you are an adult or a kid, these retro looking designs are the coolest dinosaurs of any era! Boys and girls of any age will LOVE THEM! With and without border/background designs available! Rawr!!