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Claw. 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.
A chela (/ ˈkiːlə /) – also called a claw, nipper, or pincer – is a pincer -shaped organ at the end of certain limbs of some arthropods. [1] The name comes from Ancient Greek χηλή, through Neo-Latin chela. The plural form is chelae. [2] Legs bearing a chela are called chelipeds. [3] Another name is claw because most chelae are curved ...
Chelicerates include the sea spiders, horseshoe crabs, and arachnids (including harvestmen, scorpions, spiders, solifuges, ticks, and mites, among many others), as well as a number of extinct lineages, such as the eurypterids (sea scorpions) and chasmataspidids. Chelicerata split from Mandibulata by the mid- Cambrian, as evidenced by stem-group ...
The basal parts of the chelicerae are the two iridescent green mouthparts. The chelicerae (/ kəˈlɪsəriː /) are the mouthparts of the subphylum Chelicerata, an arthropod group that includes arachnids, horseshoe crabs, and sea spiders. Commonly referred to as "jaws", chelicerae may be shaped as either articulated fangs, or as a type of pincers.
Carcinisation (American English: carcinization) is a form of convergent evolution in which non-crab crustaceans evolve a crab -like body plan. The term was introduced into evolutionary biology by L. A. Borradaile, who described it as "the many attempts of Nature to evolve a crab". [2]
Minuca pugnax, like other members of the family Ocypodidae, have chelae of different sizes: a large left chela and a small right chela. A chela (/ ˈ k iː l ə /) – also called a claw, nipper, or pincer – is a pincer-shaped organ at the end of certain limbs of some arthropods. The name comes from Ancient Greek χηλή, through Neo-Latin ...
Pedipalp. Green-shaded pedipalps in an illustrated dorsal view of a whip scorpion. Pedipalps (commonly shortened to palps or palpi) are the secondary pair of forward appendages among chelicerates – a group of arthropods including spiders, scorpions, horseshoe crabs, and sea spiders. The pedipalps are lateral to the chelicerae ("jaws") and ...
The animals grouped into the infraorder Polychelida are united by the presence of at least four pairs of chelae (claws). [4] Five families are included, all but one of which are extinct. [5] The 38 extant species are all in the family Polychelidae. [5]