Pachycephalosaurus: Are Stygimoloch and Dracorex Valid?
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In 2009, Pachycephalosaurus, Stygimoloch, and Dracorex, three unique dome-headed dinosaurs, were determined to be the same…
In 2009, Pachycephalosaurus, Stygimoloch, and Dracorex, three unique dome-headed dinosaurs, were determined to be the same…
The horned dinosaurs are now so numerous that just about any arrangement of spires, scallops, notches, and whorls are…
Moins 160Ma, au Jurassique inférieur apparaît une nouvelle lignée de dinosaures, les marginocéphales. Tout d'abord de tailles…
http://thegeekgroup.org/ - This time Steve has a Pachycephalosaurus, and talks about its long, strange history of (re-)classifica…