Fossil skeleton of Dimetrodongrandis, National Museum of Natural History, Washington, DC. Digital photo by User:Postdlf, taken 2/20/05. Postdlf, the copyright
DescriptionDimetrodongrandis Smithsonian.jpg Another synapsid, more closely related to the mammals than to the dinosaurs. Date 21 April 2011, 12:28 Source
DescriptionDimetrodongrandis.png English: Dimetrodon Date 25 April 2012 Source This file was derived from: Dimetrodongrandis.jpg: Author Dimetrodongrandis.jpg: