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Heptasuchus
''Heptasuchus'' is an extinct genus of loricatan pseudosuchian known from the Middle Triassic, Middle or Late Triassic upper Chugwater Group of Wyoming, United States. It contains a single species, ''Heptasuchus clarki'', the first formally recognized "rauisuchian" or loricatan pseudosuchian from North America. Discovery and history Collected in the summer of 1977 at the newly discovered Clark locality northwest of Casper, Wyoming, Casper Wyoming, the specimens assigned to ''H. clarki'' were described in a brief article and two master's theses at Wayne State University, Detroit. ''Heptasuchus'' was first formally described and named by Robert M. Dawley, John M. Zawiskie and J. W. Cosgriff in 1979 in paleontology, 1979 and the type species is ''Heptasuchus clarki''. The name of a biological genus, generic name is derived from ''epta'' (ἑπτά), "seven" in Ancient Greek, and ''suchus'' (συχος) which is the Latinised form of the Ancient Greek word for the crocodile god of an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Popo Agie Formation
The Popo Agie Formation ( )Locally "po-PO-zha" according to Don Pitcher, 2006, ''Moon Handbooks Wyoming,'' p. 26/ref>More ambiguous transcription of "po-po-zsha" at is a Triassic geologic Formation (geology), formation that outcrop, crops out in western Wyoming, western Colorado, and Utah. It was deposited during the Late Triassic in fluvial (river) and lake, lacustrine (lake) environments that existed across much of what is now the American southwest. The earliest known dinosaur of the Laurasian continent, ''Ahvaytum'', is discovered from the Popo Agie Formation. Dinosaurian trace fossils and fragmentary fossils of prehistoric reptiles and amphibians, including pseudosuchian reptiles and temnospondyl amphibians, have also been reported from this formation. Paleobiota Amphibians Reptiles Synapsids See also * List of dinosaur-bearing rock formations ** List of stratigraphic units with indeterminate dinosaur fossils Footnotes References * Weishampel, David B.; Dod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loricata
Loricata is a clade of archosaur reptiles that includes crocodilians and some of their Triassic relatives, such as ''Postosuchus'' and ''Prestosuchus''. More specifically, Loricata includes Crocodylomorpha (the persistent archosaur subset which crocodilians belong to) and most "rauisuchians", a paraphyletic grade of large terrestrial pseudosuchians which were alive in the Triassic period and ancestral to crocodylomorphs. Loricata is one branch of the group Paracrocodylomorpha; the other branch is the clade Poposauroidea, an unusual collection of strange "rauisuchians" including bipedal, herbivorous, and sail-backed forms. The vast majority of typical "rauisuchians", which were usually quadrupedal predators, occupy basal (early-branching) rungs of Loricata leading up to crocodylomorphs. History and Classification Loricata was initially named in a completely different context by German naturalist Blasius Merrem in his 1820 ''Versuch eines Systems der Amphibien''. Merrem consid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middle Triassic
In the geologic timescale, the Middle Triassic is the second of three epoch (geology), epochs of the Triassic period (geology), period or the middle of three series (stratigraphy), series in which the Triassic system (stratigraphy), system is divided in chronostratigraphy. The Middle Triassic spans the time between annum, Ma and Ma (million years ago). It is preceded by the Early Triassic Epoch and followed by the Late Triassic Epoch. The Middle Triassic is divided into the Anisian and Ladinian age (geology), ages or stage (stratigraphy), stages. Formerly the middle series in the Triassic was also known as Muschelkalk. This name is now only used for a specific unit of stratum, rock strata with approximately Middle Triassic age, found in western Europe. Middle Triassic life Following the Permian–Triassic extinction event, the most devastating of all mass-extinctions, life recovered slowly. In the Middle Triassic, many groups of organisms reached higher diversity again, s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancient Egypt
Ancient Egypt () was a cradle of civilization concentrated along the lower reaches of the Nile River in Northeast Africa. It emerged from prehistoric Egypt around 3150BC (according to conventional Egyptian chronology), when Upper and Lower Egypt were amalgamated by Menes, who is believed by the majority of List of Egyptologists, Egyptologists to have been the same person as Narmer. The history of ancient Egypt unfolded as a series of stable kingdoms interspersed by the "Periodization of ancient Egypt, Intermediate Periods" of relative instability. These stable kingdoms existed in one of three periods: the Old Kingdom of Egypt, Old Kingdom of the Early Bronze Age; the Middle Kingdom of Egypt, Middle Kingdom of the Middle Bronze Age; or the New Kingdom of Egypt, New Kingdom of the Late Bronze Age. The pinnacle of ancient Egyptian power was achieved during the New Kingdom, which extended its rule to much of Nubia and a considerable portion of the Levant. After this period, Egypt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chimera (paleontology)
In paleontology, a chimera is a fossil that was reconstructed with elements coming from more than a single species or genus of animal. In other words, they are mistakes or sometimes hoaxes made by paleontologists, putting together parts that do not come from the same organism. List of paleontological chimeras * "Archaeoraptor" * '' Avalonianus'' * '' Bagaraatan'' * '' Beipiaognathus''? * ''Dakotaraptor''? * '' Dalianraptor''? * '' Dravidosaurus'' * '' Eocarcharia'' * ''Kryptops''? * '' Kootenichela''? * '' Lametasaurus''? * '' Luchibang'' * '' Ornithopsis hulkei'' * Piltdown Man * '' Polacanthoides''? * '' Precursor''? * ''Protoavis'' * ''Saurophaganax?'' * "Teihivenator" * ''"Tylosaurus" capensis'' * '' Ultrasauros'' * ''Xenodens ''Xenodens'' (from Greek language, Greek and Latin for "strange tooth") is a potentially Nomen dubium, dubious extinct genus of marine lizard belonging to the mosasaur family. It contains a single species, ''X. calminechari'' (From Arabic کال� .. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ladinian
The Ladinian is a stage and age in the Middle Triassic series or epoch. It spans the time between Ma and ~237 Ma (million years ago). The Ladinian was preceded by the Anisian and succeeded by the Carnian (part of the Upper or Late Triassic). The Ladinian is coeval with the Falangian regional stage used in China. Stratigraphic definitions The Ladinian was established by Austrian geologist Alexander Bittner in 1892. Its name comes from the Ladin people that live in the Italian Alps (in the Dolomites, then part of Austria-Hungary). The base of the Ladinian Stage is defined as the place in the stratigraphic record where the ammonite species '' Eoprotrachyceras curionii'' first appears or the first appearance of the conodont '' Budurovignathus praehungaricus''. The global reference profile for the base (the GSSP) is at an outcrop in the river bed of the Caffaro river at Bagolino, in the province of Brescia, northern Italy.The GSSP was established by Brack ''et al.'' (2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carnian
The Carnian (less commonly, Karnian) is the lowermost stage (stratigraphy), stage of the Upper Triassic series (stratigraphy), Series (or earliest age (geology), age of the Late Triassic Epoch (reference date), Epoch). It lasted from 237 to 227.3 megaannum, million years ago (Ma). The Carnian is preceded by the Ladinian and is followed by the Norian. Its boundaries are not characterized by major extinctions or biotic turnovers, but a climatic event (known as the Carnian pluvial episode characterized by substantial rainfall) occurred during the Carnian and seems to be associated with important extinctions or biotic radiations. Another extinction occurred at the Carnian-Norian boundary, ending the Carnian age. Stratigraphic definitions The Carnian was named in 1869 by Johann August Georg Edmund Mojsisovics von Mojsvar, Mojsisovics. It is unclear if it was named after the Carnic Alps or after the Austrian region of Carinthia (state), Carinthia (''Kärnten'' in German) or after th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Big Horn Mountains
The Bighorn Mountains ( or ) are a mountain range in northern Wyoming and southern Montana in the United States, forming a northwest-trending spur from the Rocky Mountains extending approximately northward on the Great Plains. They are separated from the Absaroka Range, which lie on the main branch of the Rockies to the west, by the Bighorn Basin. Much of the land is contained within the Bighorn National Forest. Geology The Bighorns were uplifted during the Laramide orogeny beginning approximately 70 million years ago. They consist of over of sedimentary rock strata laid down before mountain-building began: the predominantly marine and near-shore sedimentary layers range from the Cambrian through the Lower Cretaceous, and are often rich in fossils. There is an unconformity where Silurian strata were exposed to erosion and are missing. The granite bedrock below these sedimentary layers is now exposed along the crest of the Bighorns. The Precambrian formations contain some of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alcova Limestone Formation
Alcova is a census-designated place (CDP) in Natrona County, Wyoming, Natrona County, Wyoming, United States. It is part of the Casper, Wyoming Metropolitan Statistical Area. The population was 34 at the United States Census 2020, 2020 census. Wyoming's center of population is located in the small Town of Alcova. Alcova and the nearby reservoir, Alcova Lake, are popular vacation spots with many seasonal residents. Geography According to the United States Census Bureau, the CDP has a total area of 1.25 square miles (3.2 km), of which 1.21 square miles (3.1 km) was land and 0.04 square miles (0.1 km) (3.0%) was water. Climate According to the Köppen Climate Classification system, Alcova has a semi-arid climate, abbreviated "BSk" on climate maps. Demographics At the 2000 United States Census, 2000 census there were 20 people, 7 households, and 7 families in the CDP. The population density was 70.7 people per square mile (27.6/km). There were 15 hous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crow Mountain Formation
The Crow Mountain Formation is a geologic formation in Wyoming. It preserves fossils dating back to the Triassic period. See also * List of fossiliferous stratigraphic units in Wyoming * Paleontology in Wyoming Paleontology in Wyoming includes research into the prehistoric life of the U.S. state of Wyoming as well as investigations conducted by Wyomingite researchers and institutions into ancient life occurring elsewhere. The fossil record of the US s ... References * Triassic geology of Wyoming {{Triassic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Wyoming
The University of Wyoming (UW) is a Public university, public land-grant university, land-grant research university in Laramie, Wyoming, United States. It was founded in March 1886, four years before the territory was admitted as the 44th state, and opened in September 1887. The University of Wyoming's location is written into the state's constitution. The university also offers outreach education in communities throughout Wyoming and online. The University of Wyoming consists of seven colleges: agriculture and natural resources, arts and sciences, business, education, engineering and applied sciences, health sciences, and University of Wyoming College of Law, law. The university offers over 120 undergraduate, graduate, and certificate programs including Doctor of Pharmacy and Juris Doctor. It is Carnegie Classification of Institutions of Higher Education, classified among "R1: Doctoral Universities – Very High research activity". In addition to on-campus classes in Laramie, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paratype
In zoology and botany, a paratype is a specimen of an organism that helps define what the scientific name of a species and other taxon actually represents, but it is not the holotype (and in botany is also neither an isotype (biology), isotype nor a syntype). Often there is more than one paratype. Paratypes are usually held in museum research collections. The exact meaning of the term ''paratype'' when it is used in zoology is not the same as the meaning when it is used in botany. In both cases however, this term is used in conjunction with ''holotype''. Zoology In zoological nomenclature, a paratype is officially defined as "Each specimen of a type series other than the holotype.", ''International Code of Zoological Nomenclature'' In turn, this definition relies on the definition of a "type series". A type series is the material (specimens of organisms) that was cited in the original publication of the new species or subspecies, and was not excluded from being type material ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
