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Amphicotylus Milesi
''Amphicotylus'' is an extinct genus of goniopholidid mesoeucrocodylian from the Tithonian of Colorado, Wyoming, and Oklahoma. It was species description, described in 1878.E. D. Cope. 1878. Descriptions of new extinct Vertebrata from the Upper Tertiary and Dakota Formations. 'Bulletin of the United States Geological and Geographical Survey of the Territories'', 4(2):379-396 Discovery and species ''Amphicotylus'' was first described by Edward Drinker Cope in 1878 based on dorsal and lumbar vertebrae, ribs and osteoderms. Based on these remains, found in the same locality as Camarasaurus, ''Camarasaurus supremus'', Cope determined the animal to have been smaller in size than the extant American Alligator and named the species ''A. lucasii'' after Superintendent Lucas who initially made the discovery. Cope also collected skull material from the same locality and level, however did not refer it to ''Amphicotylus''. The cranial material was examined by Charles C. Mook in 1942 who refer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Jurassic
The Late Jurassic is the third epoch of the Jurassic Period, and it spans the geologic time from 163.5 ± 1.0 to 145.0 ± 0.8 million years ago (Ma), which is preserved in Upper Jurassic strata.Owen 1987. In European lithostratigraphy, the name "Malm" indicates rocks of Late Jurassic age. In the past, ''Malm'' was also used to indicate the unit of geological time, but this usage is now discouraged to make a clear distinction between lithostratigraphic and geochronologic/chronostratigraphic units. Subdivisions The Late Jurassic is divided into three ages, which correspond with the three (faunal) stages of Upper Jurassic rock: Paleogeography During the Late Jurassic Epoch, Pangaea broke up into two supercontinents, Laurasia to the north, and Gondwana to the south. The result of this break-up was the spawning of the Atlantic Ocean. However, at this time, the Atlantic Ocean was relatively narrow. Life forms of the epoch This epoch is well known for many famous types of dinosau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morrison Formation
The Morrison Formation is a distinctive sequence of Late Jurassic, 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, siltstone, and limestone and is light gray, greenish gray, or red. Most of the fossils occur in the green siltstone beds and lower sandstones, relics of the rivers and floodplains of the Jurassic period. It is centered in Wyoming and Colorado, with outcrops in Montana, North Dakota, South Dakota, Nebraska, Kansas, the panhandles of Oklahoma and Texas, New Mexico, Arizona, Utah, and Idaho. Equivalent rocks under different names are found in Canada. It covers an area of 1.5 million square kilometers (600,000 square miles), although only a tiny fraction is exposed and accessible to geologists and Paleontology, paleontologists. Over 75% is still buried under the prairie to the east, and much of its western paleogeographic extent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Jurassic Crocodylomorphs Of North America
Late may refer to: * LATE, an acronym which could stand for: ** Limbic-predominant age-related TDP-43 encephalopathy, a proposed form of dementia ** Local-authority trading enterprise, a New Zealand business law ** Local average treatment effect, a concept in econometrics Music * ''Late'' (album), a 2000 album by The 77s * Late!, a pseudonym used by Dave Grohl on his ''Pocketwatch'' album * Late (rapper), an underground rapper from Wolverhampton * "Late" (song), a song by Blue Angel * "Late", a song by Kanye West from ''Late Registration'' Other * Late (Tonga), an uninhabited volcanic island southwest of Vavau in the kingdom of Tonga * "Late" (''The Handmaid's Tale''), a television episode * LaTe, Oy Laivateollisuus Ab, a defunct shipbuilding company * Late may refer to a person who is Dead See also * * * ''Lates'', a genus of fish in the lates perch family * Later (other) * Tardiness * Tardiness (scheduling) In scheduling, tardiness is a measure of a delay in exe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Denazinosuchus
''Denazinosuchus'' is a genus of goniopholidid mesoeucrocodylian. Its fossils have been recovered from the Upper Cretaceous Fruitland Formation and Kirtland Formation (late Campanian-early Maastrichtian) of the San Juan Basin, New Mexico. It is the most abundant and readily identifiable mesoeucrocodylian of the San Juan Basin, mostly due to its distinctive subrectangular, flattened, and sparsely pitted bony armor. It was first described in 1932 by Carl Wiman on the basis of a skull as a species of ''Goniopholis'', ''G. kirtlandicus''. Spencer G. Lucas and Robert M. Sullivan redescribed the species in 2003 and gave it its own genus, ''Denazinosuchus''. To date, ''Denazinosuchus'' is only known from skull material, armor, and a thigh bone The femur (; ), or thigh bone, is the proximal bone of the hindlimb in tetrapod vertebrates. The head of the femur articulates with the acetabulum in the pelvic bone forming the hip joint, while the distal part of the femur articulates with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anteophthalmosuchus
''Anteophthalmosuchus'' (meaning "forward-pointing eye crocodile") is an extinct genus of goniopholidid mesoeucrocodylian from the Early Cretaceous of southern England, eastern Spain, and western Belgium. Discovery The holotype specimen of ''Anteophthalmosuchus'', from the Wealden Group of the Isle of Wight, includes a well-preserved skull and partial skeleton. This specimen has been known since 1904 and was identified as the "Tie Pits specimen" or the "Hooley specimen" after Reginald Walter Hooley, an amateur paleontologist who had described it in 1905. Hooley had originally attributed the specimen to the previously named species '' Goniopholis crassidens''. Additional referred specimens include a partial disarticulated skeleton and a partial skull that may represent a juvenile specimen. In 2011, Hooley's specimen was redescribed as a distinct genus and species of goniopholidid called ''Anteophthalmosuchus hooleyi''. The genus name means "forward-pointing eye crocodile" becaus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nannosuchus
''Nannosuchus'' (meaning "dwarf crocodile") is an extinct genus of goniopholidid mesoeucrocodylian from the Berriasian Middle Purbeck Formation of England that was originally named as a species of ''Goniopholis''. The type species, ''N. gracilidens'', is based on 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 ... BMNH 48217, scattered fragmentary remains that include parts of the skull and various other postcranial elements named in 1879. References Early Cretaceous crocodylomorphs of Europe Fossil taxa described in 1879 Prehistoric pseudosuchian genera {{paleo-archosaur-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siamosuchus
''Siamosuchus'' is a genus of goniopholidid mesoeucrocodylian. Its fossils have been recovered from the pre-Aptian-age Lower Cretaceous Sao Khua Formation of eastern Thailand. It is known from a partial skull, most of the right half of the postcranial skeleton, and some bony scutes. ''Siamosuchus'' was described by Lauprasert and colleagues in 2007. The type species is ''S. phuphokensis''. ''Siamosuchus'' may be closely related to the European genus ''Goniopholis ''Goniopholis'' (meaning "angled scale") is an extinct genus of goniopholidid crocodyliform that lived in Europe and Africa during the Late Jurassic and Early Cretaceous. Being semi-aquatic it is very similar to modern crocodiles. It ranged from ...''. References Fossil taxa described in 2007 Early Cretaceous crocodylomorphs of Asia Neosuchians Prehistoric pseudosuchian genera {{paleo-archosaur-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sunosuchus
''Sunosuchus'' is an extinct genus of goniopholidid mesoeucrocodylian. Fossils are known from China, Kyrgyzstan, and Thailand and are Jurassic in age, although some may be Early Cretaceous. Four species are currently assigned to the genus: the type species ''S. miaoi'' and the species ''S. junggarensis'', ''S. shartegensis'', and ''S. shunanensis''. All species are from China. ''Goniopholis phuwiangensis'', also from Thailand, was reassigned to ''Sunosuchus'' by Andrade ''et al.'' (2011). The material from Kyrgyzstan has not been assigned to any species. Description ''Sunosuchus'' has a long, narrow snout and a small skull table. Several characters help diagnose ''Sunosuchus'' and distinguish it from other taxa. For example, there are wide pits on the back of the frontal bone. The frontal bone also has a distinctive ridge along part of its midline. The lower jaw has a long symphysis where the two halves come together. This symphysis is formed mostly from the mandibles, but als ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calsoyasuchus
''Calsoyasuchus'' (meaning " r. KyrilCalsoyas' crocodile") is a genus of crocodylomorph that lived in the Early Jurassic. Its fossilized remains were found in the Sinemurian-Pliensbachian-age Kayenta Formation on Navajo Nation land in Coconino County, Arizona, United States. Formally described as ''C. valliceps'', it is known from a single incomplete skull which is unusually derived for such an early crocodile relative. This genus was described in 2002 by Ronald Tykoski and colleagues; the specific name means "valley head" and refers to a deep groove along the midline of the nasal bones and frontal bones. It has often been interpreted as the earliest diverging member of Goniopholididae, but other studies have recovered it in various other positions. Description The holotype skull ( TMM 43631-1) that would be named ''Calsoyasuchus'' was discovered in 1997 by members of an expedition composed of crews from Texas Memorial Museum of the University of Texas at Austin, the Museum of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chalawan (genus)
''Chalawan'' (from th, ชาละวัน ) is an extinct genus of pholidosaurid mesoeucrocodylian known from the Late Jurassic or Early Cretaceous Phu Kradung Formation of Nong Bua Lamphu Province, northeastern Thailand. It contains a single species, ''Chalawan thailandicus'', with ''Chalawan shartegensis'' as a possible second species. Discovery and Naming The first fossil of ''Chalawan'' was a nearly complete lower jaw collected in the early 1980s from a road-cut near the town of Nong Bua Lamphu, in the upper part of the Phu Kradung Formation. This mandible was at first known from the posterior portion of the bone, described and named by Eric Buffetaut and Rucha Ingavat in 1980 as a new species of the goniopholidid ''Sunosuchus'', ''Sunosuchus thailandicus''. Shortly afterwards more material of the same specimen was found and described. In the early 2000s another locality of the Phu Kradung Formation was discovered near the village of Kham Phok, Mukdahan Province, yieldi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crocodilian Respiration
Crocodilia (or Crocodylia, both ) is an order of mostly large, predatory, semiaquatic reptiles, known as crocodilians. They first appeared 95 million years ago in the Late Cretaceous period (Cenomanian stage) and are the closest living relatives of birds, as the two groups are the only known survivors of the Archosauria. Members of the order's total group, the clade Pseudosuchia, appeared about 250 million years ago in the Early Triassic period, and diversified during the Mesozoic era. The order Crocodilia includes the true crocodiles (family Crocodylidae), the alligators and caimans (family Alligatoridae), and the gharial and false gharial (family Gavialidae). Although the term 'crocodiles' is sometimes used to refer to all of these, crocodilians is a less ambiguous vernacular term for members of this group. Large, solidly built, lizard-like reptiles, crocodilians have long flattened snouts, laterally compressed tails, and eyes, ears, and nostrils at the top of the h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
