Pentlandopterus

	Pentlandopterus ''Pentlandopterus'' is a genus of prehistoric eurypterid from the Late Ordovician period. The genus contains one species, ''P. minor'', known from the Pentland Hills in Scotland. Classified as part of the Eurypteroidea superfamily, it has not yet been possible to classify it as part of any particular family.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). See also * List of eurypterids This list of eurypterid genera is a comprehensive listing of all genera that have ever been included in the order Eurypterida, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now conside ... References Eurypteroidea Ordovician eurypterids Ordovician arthropods Fossil taxa described in 2013 Fossils of Scotland Eurypt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Eurypteroidea Eurypteroidea are an extinct superfamily of eurypterids. It contains three families ( Dolichopteridae, Eurypteridae, Strobilopteridae) and two genera of uncertain classification, '' Paraeurypterus'' and '' Pentlandopterus''. 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. 1955. Merostomata. ''Treatise on Invertebrate Paleontology, Part P Arthropoda 2, Chelicerata'', P30. as Eurypteracea 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 Eurypteridae is an extinct family of e ... [...More Info...] [...Related Items...] OR:** [Wikipedia] [Google] [Baidu]
picture info	List Of Eurypterids This list of eurypterid genera is a comprehensive listing of all genera that have ever been included in the order Eurypterida, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful ('' nomen dubium''), or were not formally published ('' nomen nudum''), as well as junior synonyms of more established names and genera that are no longer considered eurypterids. The list currently includes 115 names out of which 74 are considered valid eurypterid genera. There are approximately 250 species of eurypterids recognized as valid. Naming conventions and terminology There is no "official" or "canonical" list of eurypterid genera. The closest thing is found contained in the regularly updated ''Summary list'' ''of fossil spiders and their relatives'' in the World Spider Catalog. The vast majority of the content of the list below, including the valid genera, preoccupied names, junior synonyms, taxonomical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Eurypterid Eurypterids, often informally called sea scorpions, are a group of extinct arthropods that form the Order (biology), order Eurypterida. The earliest known eurypterids date to the Darriwilian stage of the Ordovician period 467.3 Myr, million years ago. The group is likely to have appeared first either during the Early Ordovician or Late Cambrian period. With approximately 250 species, the Eurypterida is the most diverse Paleozoic Chelicerata, chelicerate order. Following their appearance during the Ordovician, eurypterids became major components of marine faunas during the Silurian, from which the majority of eurypterid species have been described. The Silurian genus ''Eurypterus'' accounts for more than 90% of all known eurypterid specimens. Though the group continued to diversify during the subsequent Devonian period, the eurypterids were heavily affected by the Late Devonian extinction event. They declined in numbers and diversity until becoming extinct during the Permian–Tri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Ordovician The Ordovician ( ) is a geologic period and System (geology), system, the second of six periods of the Paleozoic Era (geology), Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period million years ago (Mya) to the start of the Silurian Period Mya. The Ordovician, named after the Celtic Britons, Welsh tribe of the Ordovices, was defined by Charles Lapworth in 1879 to resolve a dispute between followers of Adam Sedgwick and Roderick Murchison, who were placing the same Rock (geology), rock beds in North Wales in the Cambrian and Silurian systems, respectively. Lapworth recognized that the fossil fauna in the disputed Stratum, strata were different from those of either the Cambrian or the Silurian systems, and placed them in a system of their own. The Ordovician received international approval in 1960 (forty years after Lapworth's death), when it was adopted as an official period of the Paleozoic Era by the International Union of Geological Sciences, Intern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Pentland Hills The Pentland Hills are a range of hills southwest of Edinburgh, Scotland. The range is around in length, and runs southwest from Edinburgh towards Biggar and the upper Clydesdale. Etymology The name is first recorded for the farm of Pentland ( 1050, 1200) and probably derives from Brythonic ''pen llan'', head or top end of the church or enclosure. In the late 15th to mid-16th centuries, land transfers refer to Pentlandmure and Pentland – documents that also list adjacent parcels of land with such still-recognisable names as Loganehous, Hilend, Boghall and Mortounhall. 'Muir', in Pentlandmure, describes common grazings where the farm's livestock would be pastured in summer; and gradually the name was linked more specifically with the slopes of the nearby hills (perhaps Allermuir, Woodhouselee or Castlelaw). The name is completely unrelated to the name of the Pentland Firth in the north of Scotland. Timothy Pont mapped the area in the 1590s, and his work appeared in the ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]