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Pancrustacea is the clade that comprises all crustaceans and all hexapods (insects and relatives). [2] This grouping is contrary to the Atelocerata hypothesis, in which Hexapoda and Myriapoda are sister taxa , and Crustacea are only more distantly related.
Articles relating to the Pancrustacea, the clade that comprises all crustaceans and hexapods. Subcategories This category has the following 2 subcategories, out of 2 total.
Allotriocarida is a clade of Pancrustacea, containing Hexapoda (all insects, springtails & their close relatives). It also contains three non-hexapod classes: Remipedia (blind, venomous crustaceans), Cephalocarida (translucent aquatic detrivores), and Branchiopoda (freshwater, non-decapod 'shrimp').
Paulinecaris is tentatively assigned to Entomostraca due to the morphology of its maxillae and other appendages, possibly close to Yicaris and cephalocarids, [1] however Entomostraca is a paraphyletic clade [2] and therefore its position in Pancrustacea is uncertain.
It is now well accepted that the hexapods (insects and entognathans) emerged deep in the Crustacean group, with the completed pan-group referred to as Pancrustacea. The three classes Cephalocarida, Branchiopoda and Remipedia are more closely related to the hexapods than they are to any of the other crustaceans (oligostracans and multicrustaceans).
Malacostraca is the second largest of the six classes of pancrustaceans behind insects, containing about 40,000 living species, divided among 16 orders.Its members, the malacostracans, display a great diversity of body forms and include crabs, lobsters, spiny lobsters, crayfish, shrimp, krill, prawns, isopods, amphipods, mantis shrimp, and many other less familiar animals.
Yicaris dianensis is a species of microscopic pancrustacean [1] [2] found in the Yu’anshan Formation, Yunnan Province, China. [3] Yicaris' discovery is notable because its age suggests that true crustaceans already existed as far back in time as Early Cambrian, much earlier than other fossils known from the Middle and Late Cambrian.
Crustaceans are members of the sub-phylum Crustacea, a large group of arthropods (55,000 species).They include various familiar animals, such as lobsters, crabs, shrimp and barnacles.