Ceratopsian Appreciation Society t-shirt Gift A little-known fact is that

A little-known fact is that Ankylosaurs were huge party animals

it evolved 39 million years ago

Cotylorhynchus was a large synapsid that lived in the Early Permian Period of southern North America

It was a non-mammalian synapsid that lived in the Permian Period

• 15 oz mug dimensions: height 4

Ceratopsian Appreciation Society t-shirt Gift A little-known fact is thatAre you a fan of the iconic frilled dinosaurs? Here is the t shirt for you! Design by David Orr 100% combed and ring spun cotton (Heather colors contain polyester) Fabric weight: 4. 2 oz yd (142 g m) Pre shrunk fabric Side seamed construction Shoulder to shoulder taping Blank product sourced from Nicaragua, Mexico, Honduras, or the US Size guide LENGTH (inches) WIDTH (inches) CHEST (inches) XS 27 16 31 34 S 28 18 34 37 M 29 20 38 41 L 30 22 42 45 XL