Paleontology

Basically because dinosaurs ruled and evolved for approx 160 million years, whereas we have only evolved as humanoids for about 7-10 million years.
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6y
Restoration of various Dimetrodon species to scale Dimetrodon meaning "two measures of teeth") is an extinct genus of synapsid that lived during the Early Permian period, around 295–272 million years ago (Ma).It is a member of the family Sphenacodontidae. The most prominent feature of Dimetrodon is the large sail on its back formed by elongated spines extending from the vertebrae. It walked on four legs and had a tall, curved skull with large teeth of different sizes set along the jaws
Dinosaur Classification Made Simple - Rachel
Rachel (Behance) - Dinosaur Classification Made Simple
Flying Reptiles - Bird Like Dinosaurs
Flying Dinosaurs | Flying Reptiles - Bird Like Dinosaurs Wallpaper Image
T REX- done. by chrisscalf on DeviantArt
I decided to give this painting an overhaul this morning. The old version just looks TERRIBLE to me now. The dragon's face was... goofy. Not sure if this version is done or not, but.... Buy your ow...
Object Wall Decals
Dimetrodon (synapsida), Early Permian (295-272 Ma), Pelycosaur (sphenacodont); Discovered by Cope 1878
"Chicken from hell" dinosaur makes formal scientific debut
Anzu wyliei - "Chicken from hell" dinosaur makes formal scientific debut - Pictures - CBS News