Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Chelicerata
Classis: Merostomata
Ordo: †Eurypterida
Superfamilia: †Eurypteroidea
Familiae: †Dolichopteridae – †Erieopteridae – †Eurypteridae
Name
Eurypteroidea are an extinct superfamily of eurypterids. It contains three families (Dolichopteridae, Eurypteridae, Strobilopteridae) and two genera of uncertain classification, Paraeurypterus and Pentlandopterus.[1]
Description
Eurypteroidea, which lived from the Ordovician to Devonian periods, were characterized by their last pair of prosomal (head) appendages, which were developed as swimming legs, carrying paddles formed by the expansion of the two penultimate joints.[2]
Families
Order Eurypterida Burmeister, 1843
Suborder Eurypterina Burmeister, 1845
Superfamily Eurypteroidea Burmeister, 1845
Genus Paraeurypterus Lamsdell, Hoşgör & Selden, 2013
Genus Pentlandopterus Lamsdell, Hoşgör & Selden, 2013
Family Dolichopteridae Kjellesvig-Waering & Størmer, 1952
Family Eurypteridae Burmeister, 1845
Family Strobilopteridae Lamsdell & Selden, 2013
References
Dunlop, J. A., Penney, D. & Jekel, D. 2015. A summary list of fossil spiders and their relatives. In World Spider Catalog. Natural History Museum Bern, online at http://wsc.nmbe.ch , version 16.0 http://www.wsc.nmbe.ch/resources/fossils/Fossils16.0.pdf (PDF).
Størmer, L 1955. Merostomata. Treatise on Invertebrate Paleontology, Part P Arthropoda 2, Chelicerata, P30. as Eurypteracea
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