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Dimetrodon was a quadrupedal, sail-backed synapsid that most likely had a semi-sprawling posture between that of a mammal and a lizard and also could walk in a more upright stance with its body and the majority or all of its tail off the ground. [11]
These lizards typically weigh between 3 and 5 pounds (1.4–2.3 kg). [11] Additionally, this species of lizard has a unique characteristic being its crest or sailfin, which is an upright part of its body that occurs from the base of the tail to the lower area of the back. [12]
Hydrosaurus, commonly known as the sailfin dragons or sailfin lizards, is a genus in the family Agamidae. [2] These relatively large lizards are named after the sail-like structure on their tails. They are native to Indonesia (4 species) and the Philippines (1 species) where they are generally found near water, such as rivers and mangrove . [ 3 ]
A neural spine sail is a large, flattish protrusion from the back of an animal formed of a sequence of extended vertebral spinous processes and associated tissues. Such structures are comparatively rare in modern animals, but have been identified in many extinct species of amphibians and amniotes. Paleontologists have proposed a number of ways ...
The Sulawesi black sailfin lizard (Hydrosaurus celebensis) is a species of agamid native to Indonesia. [1] [2] It is the second largest species of sailfin dragon, with only the Sulawesi giant sailfin dragon being larger, [3] exceeding 1000 mm in total length, possibly 1200 mm. Head, neck, gular region and shoulder completely black; a row of enlarged flat, sometimes conical scales on either ...
[4] [5] Adult male Amboina sail-finned lizards have outer edges of the eyes that are medium-dark clear blue and no nose crest, which are some of the features that separate them from the Sulawesi species. [4] Sailfin lizards are semiaquatic and able to run short distances across water using both their feet and tail for support, similar to the ...
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.
Weber's sailfin lizard or Halmahera sailfin dragon ... "Hydrosaurus weberi (Weber's sail-fin dragon)". Morphology Herpetological Review 24 (4): 150. de Rooij N (1915).