Dimetrodon borealis, formerly known as Bathygnathus borealis, is an extinct species of pelycosaur-grade synapsid that lived about 270 million years ago...

Dimetrodon (/daɪˈmiːtrəˌdɒn/ or /daɪˈmɛtrəˌdɒn/; lit. 'two measures of teeth') is an extinct genus of non-mammalian synapsid belonging to the family Sphenacodontidae...

sea scorpions and other fossils from Ontario and the holotype of Dimetrodon borealis. The ROM also has a Zuul crurivastator skeleton from the Judith River...

Island. It preserves fossils dating back to the Permian period. Dimetrodon borealis List of fossiliferous stratigraphic units in Prince Edward Island...

Sciences of Drexel University (on loan to Royal Ontario Museum) Dimetrodon borealis Early Permian, 270 Ma (Artinskian) Orby Head Formation Named after...

incisions. Unlike tyrannosaurs, more ancient predators, like phytosaurs and Dimetrodon, had no adaptations to prevent the crack-like serrations of their teeth...

of Early Permian was Dimetrodon, which could reach 4.6 m (15 ft) and 250 kg (550 lb). The largest members of the genus Dimetrodon were also the world's...

borealis L northern northern right whale dolphin, Lissodelphis borealis sei whale, Balaenoptera borealis northern bedstraw, Galium boreale borealis –...

type locality for genus †Dimetrodon – type locality for genus †Dimetrodon booneorum – type locality for species †Dimetrodon dollovianus – type locality...

†Cystothalamia †Cystothalamia nodulifera †Dakeoceras †Desmatodon †Diadectes †Dimetrodon †Dimetrodon occidentalis – type locality for species †Diplocaulus †Domatoceras...