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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 ...
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 ...
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.
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 ...
List of animal names. Mother sea otter with sleeping pup, Morro Bay, California. In the English language, many animals have different names depending on whether they are male, female, young, domesticated, or in groups. The best-known source of many English words used for collective groupings of animals is The Book of Saint Albans, an essay on ...
Astacidea belongs to the group Reptantia, which consists of the walking/crawling decapods (lobsters and crabs). [4] Astacidea is the sister clade to the infraorder Polychelida, a small group of crustaceans restricted to deep waters. The cladogram below shows Astacidea's placement within the larger order Decapoda, from analysis by Wolfe et al ...
The name "crayfish" comes from the Old French word escrevisse (Modern French écrevisse). [2] [3] The word has been modified to "crayfish" by association with "fish" (folk etymology). [2] The largely American variant "crawfish" is similarly derived. [2] Some kinds of crayfish are known locally as lobsters, [4] crawdads, [5] mudbugs, [5] and ...
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 ...