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Eurysternidae
Eurysternidae is an extinct family of turtles in the clade Thalassochelydia. It consists of several genera of marine turtles from marine deposits in Europe, including '' Achelonia'', '' Chelonides'', ''Eurysternum''. '' Hydropelta'', '' Chelonides'', '' Idiochelys'', ''Palaeomedusa'', '' Parachelys''. and ''Solnhofia ''Solnhofia'' is a genus of extinct thalassochelydian turtle from the Late Jurassic of Germany. The type species is ''Solnhofia parsonsi'', named by Gaffney in 1975 for a partial skull and jaw from the early Tithonian of the Solnhofen Formation ...''. References Thalassochelydia Prehistoric reptile families Late Jurassic turtles Late Jurassic reptiles of Europe Taxa named by Louis Dollo {{paleo-turtle-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thalassochelydia
Thalassochelydia is a clade of extinct marine turtles from the Late Jurassic and earliest Cretaceous of Europe and South America. The group is defined as including ''Eurysternum'', ''Plesiochelys'' and ''Thalassemys'' to the exclusion of ''Pelomedusa'', '' Testudo'' and '' Protostega''. While a clade uniting the families Eurysternidae, Plesiochelyidae and Thalassemydidae had been supported by phylogenetic evidence, a name was not given for the clade until 2017, when Jérémy Anquetin and colleagues coined Thalassochelydia. While inner relationships of the clade are so uncertain as to make the monophyly of the families questionable, the significant diversity of thalassochelydians makes using the potentially invalid terms useful to describe the different morphologies. The monophyly of Thalassochelydia was further supported by a later analysis by Serjocha Evers and Roger Benson in 2019, where the group, represented by '' Solnhofia'' and Plesiochelyidae was sister taxon to Sandown ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis Dollo
Louis Antoine Marie Joseph Dollo (Lille, 7 December 1857 – Brussels, 19 April 1931) was a Belgian palaeontologist, known for his work on dinosaurs. He also posited that evolution is not reversible, known as Dollo's law. Together with the Austrian Othenio Abel, Dollo established the principles of paleobiology. Early life Louis Dollo was born in Lille, Nord-Pas-de-Calais, a scion of an old Breton family. He studied at the École centrale de Lille, with geologist Jules Gosselet and zoologist Alfred Giard, both of whom influenced the young Dollo. In 1877, he graduated with a degree in engineering. After his graduation, he worked in the mining industry for five years, but simultaneously developed a passion for paleontology. In 1879, he moved to Brussels. ''Iguanodon'' spp. For three years, starting in 1878, he supervised the excavation of the famous, multiple ''Iguanodon'' find at Bernissart, Belgium. He devoted himself to their study as a scientific passion, initially concurrently ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydropelta
''Hydropelta'' is a genus of Late Jurassic turtle from marine deposits in the Jura Mountains of eastern France. Like many other eurysternid taxa, ''Hydropelta'' was at times considered the same species as ''Eurysternum''. Originally described as a species of ''Chelone'', it was renamed ''Hydropelta'' by Hermann von Meyer in 1860. Later, it was synonymized with ''Eurysternum'' by Oertel (1915), but was treated as a distinct genus and possibly a synonym of ''Solnhofia ''Solnhofia'' is a genus of extinct thalassochelydian turtle from the Late Jurassic of Germany. The type species is ''Solnhofia parsonsi'', named by Gaffney in 1975 for a partial skull and jaw from the early Tithonian of the Solnhofen Formation ...'' by Lapparent de Broin et al. (1996). However, ''Hydropelta'' is distinct from other eurysternids by the characters of the fontanelles and plastron.Anquetin, J., Puntener, C., and Joyce, W.G., 2017. A review of the fossil record of turtles of the clade Thalassochelydia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parachelys
''Parachelys'' is a genus of Late Jurassic turtle from marine deposits in Bavaria, southern Germany. The type species, ''P. eichstaettensis'', is known only from the holotype A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several ... NHMUK OR42888. It can be distinguished from other members of Eurysternidae by the characteristics of its fontanelles, anterolateral contact of vertebral I with marginal I only, and the manual phalangeal formula 2-2-3-3-3.Anquetin, J., Puntener, C., and Joyce, W.G., 2017. A review of the fossil record of turtles of the clade Thalassochelydia. Bulletin of the Peabody Museum of Natural History 58 (2):317-369. References * Thalassochelydia Prehistoric turtle genera Kimmeridgian genera Tithonian genera Late Jurassic turtles Late Jurassic reptiles of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solnhofia
''Solnhofia'' is a genus of extinct thalassochelydian turtle from the Late Jurassic of Germany. The type species is ''Solnhofia parsonsi'', named by Gaffney in 1975 for a partial skull and jaw from the early Tithonian of the Solnhofen Formation in Bavaria. Additional material including a complete skeleton is known from the late Kimmeridgian of Switzerland and the Kimmeridgian/Tithonian of other deposits within Bavaria, and potentially also unprepared material from the Late Jurassic of France. The genus was referred to the family Eurysternidae by Anquetin and colleagues in 2017, which may represent an artificial grade of early thalassochelydians. In 2020 a new species ''Solnhofia brachyrhyncha'' was described from the Kimmeridigan aged Reuchenette Formation The Reuchenette Formation is a Jurassic geologic formation in Switzerland. It is Kimmeridgian in age and predominantly consists of well stratified limestone, with lithology variable both laterally and stratigraphically inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Achelonia
''Achelonia'' is an extinct genus of marine thalassochelydian turtle. Its type species is ''Achelonia formosa''. Fossils are known from the Upper Jurassic (late Kimmeridgian) of Wattendorf, Germany, Cerin, France, and England. Material from England was originally considered to belong to the separate genus ''Enaliochelys'' and species ''Enaliochelys chelonia'', named by Harry Govier Seeley in 1869 for a partial disarticulated skeleton from the early Kimmeridgian of the Kimmeridge Clay in Cambridgeshire Cambridgeshire (abbreviated Cambs.) is a Counties of England, county in the East of England, bordering Lincolnshire to the north, Norfolk to the north-east, Suffolk to the east, Essex and Hertfordshire to the south, and Bedfordshire and North .... The synonymy was recognised in 2020. References Thalassochelydia Prehistoric turtle genera Kimmeridgian genera Late Jurassic turtles Late Jurassic reptiles of Europe Jurassic Germany Fossils of Germany Fossil taxa descri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chelonides
''Chelonides'' is a genus of late Jurassic turtle from marine deposits in Lower Saxony, Germany. Taxonomy The name ''Chelonides wittei'' was coined by Maack (1869) for a partial shell (GZG 773–1) a partial skull (GZG 773–2), and isolated shell and girdle elements (GZG 773–3 to 773–17) from Hannover, northwestern Germany. Later, Portis (1878) erected a second species, ''C. robusta'', for elements of the shell (GZG 769–11 to 769–19). Hay (1905) considered ''Chelonides'' preoccupied without comment and erected ''Anaphotidemys'' as a replacement. Kuhn (1964) mistakenly considered the genus preoccupied by Chelonides Boisduval, 1840, a tribe of nocturnal lepidopterans. In their overview of Upper Jurassic and Early Cretaceous turtles from northwestern Germany, Karl et al. (2007) treated the two nominal ''Chelonides'' species as synonymous with the plesiochelyid ''Plesiochelys ''Plesiochelys'' is a genus of late Jurassic European and Asian turtle. The type species is ''Ples ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurysternum
''Eurysternum'' is an extinct genus of thalassochelydian turtle. Its type species is ''Eurysternum wagleri'', the holotype of which has since been lost and only survives in illustrations. Formerly assigned species ''Eurysternum ignoratum'' Bram, 1965 is a junior synonym of '' Thalassemys hughii''. The Late Jurassic species ''Eurysternum neuquinum'' Fernandez and de la Fuente, 1988, described from marine deposits in Argentina, is now placed in its own genus ''Neusticemys ''Neusticemys'' is an extinct genus of thalassochelydian sea turtle. Its type species is ''Eurysternum neuquinum''. It is known from the Late Jurassic (Tithonian) aged Vaca Muerta of Patagonia, Argentina ''Neusticemys'' was originally described ...''.M. S. Fernandez and M. S. de la Fuente. 1993. Las tortugas casiquélidias de las calizas litográficas titonianas del área Los Catutos Argentina. Ameghiniana 30(3):283-295. References Thalassochelydia Prehistoric turtle genera Kimmeridgian genera La ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Idiochelys
''Idiochelys'' is a genus of Late Jurassic turtle from marine deposits in the Jura Mountains The Jura Mountains ( , , , ; french: Massif du Jura; german: Juragebirge; it, Massiccio del Giura, rm, Montagnas da Jura) are a sub-alpine mountain range a short distance north of the Western Alps and mainly demarcate a long part of the Frenc ... of eastern France and Bavaria, Germany. ''Idiochelys wagneri'', ''Chelonemys plana'', and ''Chelonemys ovata'' are junior synonyms, the latter two being described from specimens in the Ain Department of southeastern France. Distinguishing features of ''Idiochelys'' include an oval/rounded carapace, broad vertebrals, a long tail, and a reduced manual phalangeal formula (2-2-3-3-3).Anquetin, J., Puntener, C., and Joyce, W.G., 2017. A review of the fossil record of turtles of the clade Thalassochelydia. Bulletin of the Peabody Museum of Natural History 58 (2):317-369. http://www.bioone.org/doi/abs/10.3374/014.058.0205 References Thala ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palaeomedusa
''Palaeomedusa testa'' is an extinct species of thalassochelydian turtle from the Tithonian of the Late Jurassic (145.5 to 150.8 million years ago). It was first described by the German palaeontologist Christian Erich Hermann von Meyer in 1860.F. A. Quenstedt. 1882. Handbuch der Petrefaktenkunde andbook of Fossilsviii-1239 It is the only species classified under the genus ''Palaeomedusa''. See also *''Thalassemys ''Thalassemys'' is a genus of extinct thalassochelydian turtle from the Late Jurassic of western and central Europe. While the genus was originally named by Rütimeyer in 1859 for a large carapace and other associated fragments from the late Kim ...'' References Thalassochelydia Prehistoric turtle genera Monotypic prehistoric reptile genera Tithonian genera Late Jurassic turtles Late Jurassic reptiles of Europe Jurassic Germany Fossils of Germany Solnhofen fauna Fossil taxa described in 1860 Taxa named by Christian Erich Hermann von Meyer {{Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinct
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the fossil record) after a period of apparent absence. More than 99% of all species that ever lived on Earth, amounting to over five billion species, are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryote globally, and possibly many times more if microorganisms, like bacteria, are included. Notable extinct animal species include non-avian dinosaurs, saber-toothed cats, dodos, m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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