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Size comparison of some species of Edaphosaurus.. Edaphosaurus species measured from 0.5 to 3.5 metres (1.6 to 11.5 ft) in length and weighed over 300 kg (660 lb). [5] In keeping with its tiny head, the cervical vertebrae are reduced in length, while the dorsal vertebrae are massive, the tail is deep, the limbs are short and robust, and the ribs form a wide ribcage.
Dimetrodon milleri was described by Romer in 1937. [58] It is one of the smallest species of Dimetrodon in North America and may be closely related to D. occidentalis, another small-bodied species. [51] D. milleri is known from two skeletons, one nearly complete (MCZ 1365) and another less complete but larger (MCZ 1367).
Fossil remains of many Permian tetrapods (four-limbed vertebrates) have been found in the Red Beds, including those of Dimetrodon, Edaphosaurus, Seymouria, Platyhystrix, and Eryops. A recurring feature in many of these animals is the sail structure on their backs. [3] Edaphosaurus pogonias and Platyhystrix
Walking with Monsters – Life Before Dinosaurs, marketed as Before the Dinosaurs – Walking with Monsters in North America, is a 2005 three-part nature documentary television miniseries created by Impossible Pictures and produced by the BBC Studios Science Unit, [2] the Discovery Channel, ProSieben and France 3. [3]
Restoration of two individuals of Sphenacodon. The skull is long, deep and narrow, an adaptation for strong jaw muscles. The front teeth are large and dagger-like, whereas the teeth in the sides and rear of the jaw are much smaller (hence the name of the well-known genus Dimetrodon – "two-measure tooth", although all members of the family have this attribute).
Dimetrodon borealis, formerly known [1] as Bathygnathus borealis, is an extinct species of pelycosaur-grade synapsid that lived about 270 million years ago (Ma) in the Early Middle Permian.
United States of America [9] Basicranodon. Vaughn. 1958. Syn. Lower Permian [1] United States of America [1] Synonym of Mycterosaurus [10] Bathyglyptus. Case. 1911. Syn. N/A N/A Synonym of Dimetrodon [8] Bathygnathus. Leidy. 1854. Valid. Lower Permian [4] United States of America [4] Brachycnemius. Williston. 1911. Syn. N/A N/A Synonym of ...
In Dimetrodon, the neural spines develop into long, narrow, cylindrical projections that support a tall vertical dorsal sail that ends near the base of the tail. In Sphenacodon , the neural spines are enlarged but retain a flat-tipped, blade-like shape along the back and tail, and form a crest rather than a tall sail.