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Pleurosternidae
Pleurosternidae is an extinct family of freshwater turtles belonging to Paracryptodira. They are definitively known from the Late Jurassic to Early Cretaceous (Albian) of Western Europe and North America. Genera Valid taxa *'' Dinochelys'' Morrison Formation, United States, Late Jurassic (Tithonian) *''Dorsetochelys'' Purbeck Group, England, Early Cretaceous (Berriasian) Bückeberg Formation, Germany, Berriasian *''Glyptops'' Morrison Formation, United States, Late Jurassic (Tithonian) *''Pleurosternon'' Purbeck Group, England, Early Cretaceous (Berriasian), Ágreda locality, Spain, Tithonian-Berriasian, France, Tithonian-Berriasian *''Riodevemys'' Villar del Arzobispo Formation, Spain, Late Jurassic (Tithonian) *''Selenemys'' Lourinhã Formation, Portugal, Late Jurassic (Kimmeridgian) *''Toremys'' Escucha Formation, Spain, Early Cretaceous (Albian The Albian is both an age (geology), age of the geologic timescale and a stage (stratigraphy), stage in the stratigraphic col ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleurosternon
''Pleurosternon'' is an extinct genus of freshwater pleurosternid turtle from the latest Jurassic to earliest Cretaceous of Europe. Its type species, ''P. bullockii'' was described by the paleontologist Richard Owen (noted for coining the word '' Dinosauria'') in 1853. Since then, and throughout the late 19th century, many fossil turtles were incorrectly assigned to this genus, though only two are currently considered valid. Taxonomy ''Pleurosternon bullockii'' fossils were first described by Richard Owen in 1841 from specimens found in the earliest Cretaceous (Berriasian) aged Purbeck Group of the Isle of Purbeck, of Dorset in southern England, under the living genus '' Platemys''. It was not until 1853 however, that it was published under the name ''Pleurosternon'' in a paper Owen presented to the Palaeontographical Society. ''P. portlandicum'' named by Richard Lydekker in 1889 from the latest Jurassic (Tithonian) aged Portland Stone of the Isle of Portland, Dorset, is now co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toremys
''Toremys'' is an extinct genus of pleurosternid that inhabited Spain during the Albian stage of the Early Cretaceous epoch. It is a monotypic taxon known from a single species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ..., ''T. cassiopeia''. References {{Taxonbar, from=Q130472809 Early Cretaceous turtles Prehistoric turtle genera Monotypic prehistoric reptile genera Pleurosternidae Fossil taxa described in 2015 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorsetochelys
''Dorsetochelys'' is an extinct genus of turtle from the Early Cretaceous of southern England and northwestern Germany. Taxonomy The type species, ''Dorsetochelys delairi'', was described on the basis of DORCM G.23, a complete skull from the Early Cretaceous (Berriasian) Purbeck Group of Dorset, England. Later, a turtle skull from the vicinity of Como Bluff, Wyoming, was described as a new species, ''D. buzzops'', in honor of Buzz Pitman, a museum director of the Rock River Museum near Como Bluff. However, a cladistic analysis conducted in 2013 recovered that species as a member of Baenidae, sister to '' Uluops''. In 2012, pleurosternid remains were described from the Early Cretaceous (Berriasian) Bückeberg Formation of Lower Saxony Lower Saxony is a States of Germany, German state (') in Northern Germany, northwestern Germany. It is the second-largest state by land area, with , and fourth-largest in population (8 million in 2021) among the 16 ' of the Germany, Federal R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Selenemys
''Selenemys'' is an extinct genus of pleurosternid turtle from the Late Jurassic of Central West of Portugal. It is known from several specimens recovered from the Lusitanian Basin, dating to the upper Kimmeridgian age. It was one of the earliest European pleurosternids, more closely related to the later Cretaceous pleurosternids of Europe than the contemporary pleurosternids of North America. This genus was named by Adán Pérez-García and Francisco Ortega in 2011, and the type species is ''Selenemys lusitanica''. The holotype A holotype (Latin: ''holotypus'') is a single physical example (or illustration) of an organism used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of s ... is housed at the Laboratory of Paleontology and Paleoecology of thALT-Society of Natural History(Torres Vedras, Portugal). References Pleurosternidae Prehistoric turtle genera Kimmeridgian gener ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glyptops
''Glyptops'' is an extinct genus of pleurosternid freshwater turtle known from the Late Jurassic of North America. Taxonomy The type species, ''Glyptops plicatulus'', was first described as ''Compsemys plicatulus'' by Edward Drinker Cope on the basis of AMNH 6099, a partial shell from the Late Jurassic (Tithonian) aged Morrison Formation of Colorado. In 1890, a partial skull, YPM 1784 (described from Como Bluff, Wyoming), was named ''Glyptops ornatus'' by Othniel Charles Marsh. Later, Oliver Perry Hay recognized ''Compsemys plicatulus'' and ''Glyptops ornatus'' as being from the same species, hence the new combination ''G. plicatulus''. Another Morrison species of ''Glyptops'', ''G. utahensis'', was described from a complete shell (CM 3412) found at Dinosaur National Monument in Utah. ''Glyptops'' later became a wastebasket taxon to refer to isolated shell fragments with a finely sculpted surface texture. The type of ''Glyptops plicatulus'' was later judged to be a ''nomen d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Riodevemys
''Riodevemys'' is an extinct genus of pleurosternid turtle that inhabited Spain during the Late Jurassic epoch. It is known from a single species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ..., ''R. inumbragigas''. References Prehistoric turtle genera Pleurosternidae {{Paleo-turtle-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paracryptodira
__NOTOC__ Paracryptodira is an extinct group of reptiles in the clade Testudinata (which contains modern turtles and their extinct relatives), known from the Jurassic to Paleogene of North America and Europe. Initially treated as a suborder sister taxon, sister to Cryptodira,Gaffney (1975) they were then thought to be a very primitive lineage inside the Cryptodira according to the most common use of the latter taxon.Joyce (2007) They are now often regarded as late-diverging stem group, stem-turtles, lying outside the clade formed by Cryptodira and Pleurodira. Paracryptodires are divided into three main groups, Compsemydidae, known from the Late Jurassic to Paleocene of North America and Europe, Pleurosternidae, known from the Late Jurassic to Early Cretaceous of North America and Europe, and Baenidae, known from the Early Cretaceous to Eocene of North America. The latter two groups are more closely related to each other than to ''Compsemys'', forming the clade Baenoidea. Characte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Villar Del Arzobispo Formation
The Villar del Arzobispo Formation is a Late Jurassic to possibly Early Cretaceous geologic formation in eastern Spain. It is equivalent in age to the Lourinhã Formation of Portugal. It was originally thought to date from the Late Tithonian-Middle Berriasian, but more recent work suggests a Kimmeridigan-Late Tithonian, possibly dating to the Early Berriasian in some areas. The Villar del Arzobispo Formation's age in the area of Riodeva in Spain has been dated based on stratigraphic correlations as middle-upper Tithonian, approximately 145-141 million years old. In the area of Galve, the formation potentially dates into the earliest Cretaceous. Most of the unit consists of siliciclastic mudstone, however the lower portion of the formation is dominated by bioclastic, oolitic and peloidal limestone, while channelized sandstone and conglomerate is found in the middle portion of the unit. While the lower part of the formation was deposited in an inner carbonate platform, the up ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dinochelys
''Dinochelys'' (from a reference to the Dinosaur National Monument Visitor Center and Greek ''chelys'', turtle) is an extinct genus of paracryptodiran turtle from the Late Jurassic Morrison Formation The Morrison Formation is a distinctive sequence of Upper Jurassic sedimentary rock found in the western United States which has been the most fertile source of dinosaur fossils in North America. It is composed of mudstone, sandstone, siltston .... See also * Paleobiota of the Morrison Formation References Pleurosternidae Prehistoric turtle genera Late Jurassic turtles Late Jurassic reptiles of North America Morrison fauna Fossil taxa described in 1979 Taxa named by Eugene S. Gaffney {{Jurassic-reptile-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uluops
''Uluops'' is an extinct genus of paracryptodire turtle from the Late Jurassic (Tithonian) of North America. The type and only species is ''Uluops uluops'', which is known from a single skull from the Morrison Formation The Morrison Formation is a distinctive sequence of Upper Jurassic sedimentary rock found in the western United States which has been the most fertile source of dinosaur fossils in North America. It is composed of mudstone, sandstone, siltston .... See also * Paleobiota of the Morrison Formation References Further reading *K. Carpenter and R. T. Bakker. 1990. A new latest Jurassic vertebrate fauna, from the highest levels of the Morrison Formation at Como Bluff, Wyoming, with comments on Morrison biochronology. Part II. A new baenid turtle. Hunteria 2(6):3-4 Pleurosternidae Prehistoric turtle genera Tithonian genera Late Jurassic turtles Late Jurassic reptiles of North America Morrison fauna Fossil taxa described in 1990 Taxa named by Kennet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tithonian
In the geological timescale, the Tithonian is the latest age (geology), age of the Late Jurassic Epoch and the uppermost stage (stratigraphy), stage of the Upper Jurassic Series. It spans the time between 149.2 ±0.7 annum, Ma and 143.1 ±0.6 (million years ago). It is preceded by the Kimmeridgian and followed by the Berriasian (part of the Cretaceous). Stratigraphic definitions The Tithonian was introduced in scientific literature by German stratigrapher Albert Oppel in 1865. The name Tithonian is unusual in geological stage names because it is derived from Greek mythology. Tithonus was the son of Laomedon of Troy and fell in love with Eos, the Greek goddess of dawn. His name was chosen by Albert Oppel for this stratigraphy, stratigraphical stage because the Tithonian finds itself hand in hand with the dawn of the Cretaceous. The base of the Tithonian stage is at the base of the ammonite biozone of ''Hybonoticeras, Hybonoticeras hybonotum''. A global reference profile (a GSSP, G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
