Peltidium is a prodorsal shield found in animals of the Subphylum Chelicerata, in the Phylum Arthropoda. In some groups (Schizomida, Palpigradi, Solpugida and Opiliones) the peltidium, also known as schizopeltid, can be subdivided in: propeltidium, a capace-like shield that covers the proterosoma, which comprises the fused acron (protocerebral region) and first four segments; and two free segments, mesopeltidium and metapeltidium (Online Dictionary of Invertebrate Zoology). Classes Arachnida- spiders, scorpions, etc. ... Subphyla and Classes Subphylum Trilobitomorpha Trilobita - Trilobites (extinct) Subphylum Chelicerata Arachnida - Spiders, Scorpions, etc. ... Families Calcitronidae †Petrunkevitch, 1945b Hubbardiidae Cook, 1899 Protoschizomidae Rowland, 1975 A schizomid is an invertebrate animal belonging to the order Schizomida in the class Arachnida, in the subphylum Chelicerata of the phylum Arthropoda. ... Genera 80 species in 4 genera See text A palpigrade, commonly known as a microwhip scorpion, is an invertebrate animal belonging to the order Palpigradi in the class Arachnida, in the subphylum Chelicerata of the phylum Arthropoda. ... Genera Eremobates Syndaesia A Solifugid (plural form Solifugae) is an arachnid belonging to the order Solifugae. ... The Phalangids (legacy name) or Opiliones (better known as harvestmen) are eight-legged invertebrate animals belonging to the order Opiliones in the class Arachnida, in the subphylum Chelicerata of the phylum Arthropoda. ...
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