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A domestic cat's retractable claw in protracted position. A claw is a curved, pointed appendage found at the end of a toe or finger in most amniotes (mammals, reptiles, birds). Some invertebrates such as beetles and spiders have somewhat similar fine, hooked structures at the end of the leg or tarsus for gripping a surface as they walk.
Size compared with a human. Deinonychus possessed large "hands" with three claws on each forelimb. The first digit was shortest and the second was longest. Each hind foot bore a sickle-shaped claw on the second digit, which was probably used during predation. [10] No skin impressions have ever been found in association with fossils of Deinonychus
Grady Franklin Stiles Jr. (June 26, 1937 – November 29, 1992) was an American freak show performer and murderer. His deformity was the genetic condition ectrodactyly, in which the fingers and toes are fused together to form claw-like extremities.
Ectrodactyly, split hand, or cleft hand [1] (from Ancient Greek ἔκτρωμα (ektroma) 'miscarriage' and δάκτυλος (daktylos) 'finger') [2] involves the deficiency or absence of one or more central digits of the hand or foot and is also known as split hand/split foot malformation (SHFM). [3]
The underlying bone is a virtual mold of the overlying horny structure and therefore has the same shape as the claw or nail. Compared to claws, nails are flat, less curved, and do not extend far beyond the tip of the digits. The ends of the nails usually consist only of the "superficial", hardened layer and are not pointed like claws. [38]
The crabs human see or eat are usually only six or so inches across their shells. An aerial image taken in the UK captured a massive crab, and is now garnering a lot of attention online. The ...
In 1970, Rozhdestvensky re-examined the claws and suggested a possible function specialized in opening termite mounds or a frugivore diet. [2] Barsbold in 1976 suggested that the unusual claws of Therizinosaurus may have been employed to impale or dig up loose terrain, however, he pointed out their notorious fragility upon impact. [4]
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