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Anaspidomorphi Genera
Anaspidomorphi (anaspidomorphs) is an extinct superclass of jawless fish. According to the newer taxonomy based on the work of Nelson, Grande and Wilson 2016 and van der Laan 2018, the phylogeny of Anaspidomorphi looks like this: * Superclass †Anaspidomorphi ** Order †Euphanerida *** Family †Euphaneropidae Woodward 1900 ** Order †Jamoytiiformes Halstead-Tarlo 1967 *** Family † Achanarellidae Newman 2002 *** Family † Jamoytiidae White 1946 ** Class †Anaspida Janvier 1996 non Williston 1917 *** Order †Endeiolepidiformes Berg 1940 **** Family †Endeiolepididae Stensio 1939 *** Order †Birkeniiformes Stensiö 1964 **** Family †Pharyngolepididae Kiær 1924 **** Family †Pterygolepididae Obručhev 1964 **** Family †Rhyncholepididae Kiær 1924 **** Family †Tahulalepididae Blom, Märss & Miller 2002 **** Family †Lasaniidae Goodrich 1909 **** Family †Ramsaasalepididae Blom, Märss & Miller 2003 **** Family †Birkeniidae Traquair 1899 **** Family †Septentrion ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birkeniiformes
Birkeniiformes (Birkeniida or Birkeniids) is an extinct order of jawless fish belonging to the class Anaspida. Subtaxa A newer taxonomy based on the work of Mikko's Phylogeny Archive, Nelson, Grande and Wilson 2016 and van der Laan 2018. * Genus †''Cowielepis'' Blom 2008 * Genus †'' Hoburgilepis'' Blom, Märss & Miller 2002 * Genus †'' Kerreralepis'' Blom 2012 * Genus †'' Maurylepis'' Blom, Märss & Miller 2002 * Genus †'' Rytidolepis'' Pander 1856 * Genus †'' Schidiosteus'' Pander 1856 * Genus †'' Silmalepis'' Blom, Märss & Miller 2002 * Genus †'' Vesikulepis'' Blom, Märss & Miller 2002 * Family † Pharyngolepididae Kiær 1924 corrig. ** Genus †'' Pharyngolepis'' Kiaer 1911 * Family † Pterygolepididae Obručhev 1964 corrig. ** Genus †'' Pterygolepis'' Cossmann 1920 'Pterolepis'' Kiaer 1911 non Rambur 1838 non De Candolle ex Miquel 1840; ''Pterolepidops'' Fowler 1947 * Family † Rhyncholepididae Kiær 1924 corrig. ** Genus †''Rhyncholepis'' Kiær 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Septentrioniidae
Septentrioniidae is an extinct family of jawless fish belonging to the order Birkeniiformes Birkeniiformes (Birkeniida or Birkeniids) is an extinct order of jawless fish belonging to the class Anaspida. Subtaxa A newer taxonomy based on the work of Mikko's Phylogeny Archive, Nelson, Grande and Wilson 2016 and van der Laan 2018. * Ge .... References External links * Prehistoric jawless fish families Birkeniiformes {{paleo-jawless-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birkeniidae
Birkeniidae is an extinct family of jawless fish belonging to the order Birkeniiformes Birkeniiformes (Birkeniida or Birkeniids) is an extinct order of jawless fish belonging to the class Anaspida. Subtaxa A newer taxonomy based on the work of Mikko's Phylogeny Archive, Nelson, Grande and Wilson 2016 and van der Laan 2018. * Ge .... They were defined in 1899 by Ramsay H. Traquair, and were a successful family among the many jawless fish in the Silurian seas. Morphology Birkeniidae had a large body which was ovular in shape, and a strong, mobile tail. Their eyes were positioned on either side of the head. Their mouth was large for the jawless fish, but contained no teeth. Birkeniidae are distinguished by the crown shaped projection on their back, and the other smaller projections which run down its tail. They also possessed fins which faced downwards, an uncommon trait among the jawless fish. They had typical scaly skin. References External links * Prehistoric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ramsaasalepididae
''Ramsaasalepis'' is an extinct genus of jawless fish. Its the type and only genus of the family Ramsaasalepididae, and contains the single species ''Ramsaasalepis porosa''. References External links * Birkeniiformes genera Fossil taxa described in 2002 {{paleo-jawless-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lasaniidae
''Lasanius'' is a genus of basal anaspida from the Early Silurian. Its fossils are around 10 mm to 150 mm in length. Fossils have been found in Early Silurian-aged strata in Ayrshire, Muirkirk, Scotland Scotland (, ) is a country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to the ... and Seggholm. References R.H. Traquair M.D. LL.D. F.R.S. (1898) IX.—''Notes on Palœozoic fishes.''—No. II, Annals and Magazine of Natural History, 2:7, 67–70, DOI: 10.1080/00222939808678013 Traquair, R. (1899). XXXII.—Report on Fossil Fishes collected by the Geological Survey of Scotland in the Silurian Rocks of the South of Scotland. ''Transactions of the Royal Society of Edinburgh,'' ''39''(3), 827–864. doi:10.1017/S0080456800035237 External links Underwhelming Fossil Fish of the Month: February ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tahulalepididae
Tahulalepididae is an extinct family of jawless fish belonging to the order Birkeniiformes Birkeniiformes (Birkeniida or Birkeniids) is an extinct order of jawless fish belonging to the class Anaspida. Subtaxa A newer taxonomy based on the work of Mikko's Phylogeny Archive, Nelson, Grande and Wilson 2016 and van der Laan 2018. * Ge .... References External links * Prehistoric jawless fish families Birkeniiformes {{paleo-jawless-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhyncholepididae
''Rhyncholepis'' is an extinct genus of anaspida from the Late Silurian. It was 26 cm long. Fossils have been found in southern Norway Norway, officially the Kingdom of Norway, is a Nordic country in Northern Europe, the mainland territory of which comprises the western and northernmost portion of the Scandinavian Peninsula. The remote Arctic island of Jan Mayen and t .... References Fossil taxa described in 1911 Birkeniiformes genera Silurian jawless fish Fossils of Norway {{Silurian-animal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pterygolepididae
''Pterygolepis'' is an extinct genus of jawless fish belonging to the order Birkeniiformes Birkeniiformes (Birkeniida or Birkeniids) is an extinct order of jawless fish belonging to the class Anaspida. Subtaxa A newer taxonomy based on the work of Mikko's Phylogeny Archive, Nelson, Grande and Wilson 2016 and van der Laan 2018. * Ge .... File:Pterygolepis nitidus Tuebingen.jpg, Fossil of ''Pterygolepis nitidus'', an extinct fish. Took the picture at Museum of Paleontology, Tübingen File:Pterygolepis.jpeg, ''Pterygolepis nitidus'' from Lower Silurian of Norway References External links * Birkeniiformes genera Fossil taxa described in 1920 {{paleo-jawless-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pharyngolepididae
''Pharyngolepis'' is an extinct genus of primitive jawless fish that lived in the Silurian period of what is now Norway. ''Pharyngolepis'' had well-developed anal and caudal fins, but no paired or dorsal fins that would have helped stabilise it in the water, and so was probably a poor swimmer, remaining close to the sea bottom. The pectoral fin Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as ...s were instead replaced by bony spines, possibly for protection against predators, and there was a row of spines along the back. It probably scooped up food from the ocean floor. References Fossil taxa described in 1911 Birkeniiformes genera Silurian fish of Europe {{Silurian-animal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endeiolepididae
''Endeiolepis'' is an extinct jawless fish that lived during the Late Devonian period, similar to that of extant lampreys Lampreys (sometimes inaccurately called lamprey eels) are an ancient extant lineage of jawless fish of the order Petromyzontiformes , placed in the superclass Cyclostomata. The adult lamprey may be characterized by a toothed, funnel-like su ... for its gill pouches, but ''Endeiolepis'' had an unusually large number of gill pouches. ''Endeiolepis'' was also described as being quite similar to '' Euphanerops'', the main difference being a long series of elongated scales forming a ventrolateral protuberance on each side of Endeiolepis’ body. ''Endeiolepis'' had a strongly heterocercal tail. References Discoveries of ''Endeiolepis'' External links Anaspida genera Devonian jawless fish Late Devonian fish Fossils of Canada {{Devonian-jawless-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Devonian
The Early Devonian is the first of three Epoch (geology), epochs comprising the Devonian period, corresponding to the Lower Devonian Series (stratigraphy), series. It lasted from and began with the Lochkovian Stage , which was followed by the Pragian from and then by the Emsian, which lasted until the Middle Devonian began, . During this time, the first Ammonoidea, ammonoids appeared, descending from Bactritida, bactritoid Nautiloidea, nautiloids. Ammonoids during this time period were simple and differed little from their nautiloid counterparts. These ammonoids belong to the order Agoniatitida, which in later epochs evolved to new ammonoid orders, for example Goniatite, Goniatitida and Clymeniida. This class of cephalopod molluscs would dominate the marine fauna until the beginning of the Mesozoic Era. References {{Geological history Early Devonian, Geological epochs Devonian geochronology, *01 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
