It is time to celebrate KarlyFries’ fabulous birthday, and we decided she needed a dinosaur themed party. Dinos are fun, she likes dinos, so let’s have a party.

Dimetrodon

Dimetrodon is probably the best-known of the mammal-like reptiles. It was a predator that lived in the Permian period between about 280 million and 265 million years ago. Dimetrodon's sail was filled with blood vessels and is believed to have mainly served to help in regulating body temperature. By facing the sail towards the sun, Dimetrodon could heat itself up quickly, and it could also use the sail to cool itself if it became too hot. Additionally, the sail may have served a number of secondary purposes such as attracting mates, or helping to deter other predators (by making the animal appear larger than it was). The name Dimetrodon means "two measures of teeth", and was chosen in 1878 by Edward D. Cope. This name reflects the fact that the animal's skull contains two different types of teeth (unlike reptiles which normally only contain a single type of teeth) - namely sharp canine teeth, and shearing teeth.

Happy Birthday Karly Fries!