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The subphylum Chelicerata (from Neo-Latin, from French chélicère, from Ancient Greek χηλή (khēlḗ) 'claw, chela ', and κέρας (kéras) 'horn') [1] constitutes one of the major subdivisions of the phylum Arthropoda. Chelicerates include the sea spiders, horseshoe crabs, and arachnids (including harvestmen, scorpions, spiders ...
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six pairs of appendages and two body segmentschelicerae and pedipalpsno mandibles and no antennaeChelicerates are classified within the following taxonomic hierarchy: Animals> Invertebrates > Arthropods > Chelicerates Chelicerates are divided into the following taxonomic groups: 1. Horseshoe crabs(Merostomata): There are five species of horseshoe crabs alive today. Members of this group live in shallow marine waters along the Atlantic coast of...
Hickman C, Roberts L, Keen S. Animal Diversity. 6th ed. New York: McGraw Hill; 2012. 479 p.Ruppert E, Fox R, Barnes R. Invertebrate Zoology: A Functional Evolutionary Approach. 7th ed. Belmont CA: Brooks/Cole; 2004. 963 p.People also ask
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The subphylum Chelicerata is one of the five subdivisions of the phylum Arthropoda, with members characterized by the absence of antennae and mandibles (jaws) and the presence of chelicerae (a pincer-like mouthpart as the anterior appendage, composed of a base segment and a fang portion). Extant chelicerates include spiders, scorpions, ticks ...
- Animalia
- ChelicerataHeymons, 1901
- Arthropoda
Mar 30, 2024 · Subphylum Chelicerata. A major subphylum under Arthropoda, the Chelicerata includes sea spiders (pycnogonids), horseshoe crabs, and arachnids, such as harvestmen, scorpions, spiders, ticks, and mites. The chelicerates derive their name from ‘chelicerae,’ the pincer-like appendages (found anterior to the mouth) that form an integral part of ...
Abstract. Chelicerata is one of the major arthropod groups, characterized by a body divided into two tagmata, prosoma and opisthosoma, while the name Chelicerata refers to the chelicerae, the chelate first pair of appendages. Chelicerates comprise the arachnids (spiders, scorpions, mites, etc.), the extinct eurypterids (sea scorpions) and the ...
- J. A. Dunlop, P. A. Selden
- 1998
The Chelicerata are a diverse group of arthropods—though not as diverse as the Mandibulata—named for the presence of chelicerae. Chelicerae, meaning “claw horn” in Greek, are a pair of appendages anterior to (i.e., in front of) the mouth. In different chelicerates, which include spiders, ticks, mites, scorpions (Scorpiones), horseshoe ...
Chelicerata is a subphylum of arthropods that includes terrestrial as well as marine animals. Both the fossil record and molecular data place the origin of the chelicerates over 500 million years ago in the Cambrian (e.g., see Dunlop 2010; Rota-Stabelli et al. 2013). It has been shown that the chelicerates are a monophyletic group, and although ...
