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Pelvic spurs (also known as vestigial legs) are external protrusions found around the cloaca in certain superfamilies of snakes belonging to the greater infraorder Alethinophidia. [1] These spurs are made up of the remnants of the femur bone, which is then covered by a corneal spur, or claw-like structure. [ 1 ]
It has two small hind legs and is considered a transitional form between Cretaceous lizards and limbless snakes. The feature, described as vestigial, was most likely useless to Eupodophis . [ 1 ] The type species Eupodophis descouensi was named in 2000 and resides now in the paleontology section of the Mim Museum in Beirut, Lebanon.
Snakes are thought to have evolved from either burrowing or aquatic lizards, perhaps during the Jurassic period, with the earliest known fossils dating to between 143 and 167 Ma ago. The diversity of modern snakes appeared during the Paleocene epoch ( c. 66 to 56 Ma ago, after the Cretaceous–Paleogene extinction event ).
Paddle-tailed sea snakes prey on fish eggs extracted from coral reef crevices. Some tree snakes have specialized jaws to extract snails from their shells, and use special chemicals to "de-slime" them.
The head and tail are superficially similar as the head and neck are indistinct. Unlike other snakes, the head scales resemble the body scales. The eyes are barely discernible as small dots under the head scales. The tip of the tail has a small, pointed spur. Along the body are fourteen rows of dorsal scales. Coloration ranges from charcoal ...
Tetrapodophis possesses small yet well-developed fore- and hindlimbs like a lizard and a long body similar to a snake, around 19.5 cm (7.7 in) in length. [6] Nevertheless, it shares many characteristics with modern snakes, including an elongate body, short tail, broad belly scales, a skull with a short snout and long braincase , curved jaws ...
Appearance: Small (between two and three feet) and slender. The coral snake has black and red rings, separated by smaller yellow rings; hence, the “red touches yellow” rhyme.
Tiny worms behave more like snakes Research on the worms began more than 15 years ago at Sam Houston State University when Patrick J. Lewis, a professor there, led a research trip to Botswana with ...