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Koskinonodon
''Anaschisma'' ("ripped up") is an extinct genus of large temnospondyls. These animals were part of the family called Metoposauridae, which filled the crocodile-like predatory Ecological niche, niches in the late Triassic. It had a large skull about long, and possibly reached long. It was an ambush hunter, snapping up anything small enough to fit in its huge jaws. It was very common during the Late Triassic (Carnian-Norian age) in what is now the American Southwest. History of discovery ''Anaschisma'' was erected by Branson (1905) from two metoposaurid skulls from the Popo Agie Formation (Carnian) of Wyoming. The generic name ''Anaschisma'' ("ripped up") was not explained but would derive from Ancient Greek ἀνασχίζω [anaskhizo] "rip up, rend", likely alluding to the fragmented state of the original fossils noted by Branson: "The skulls were in a hard matrix of arenaceous shale, and had been broken in many pieces." The type species, ''A. browni'', was coined for the sk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buettneria Perfecta
''Anaschisma'' ("ripped up") is an extinct genus of large temnospondyls. These animals were part of the family called Metoposauridae, which filled the crocodile-like predatory niches in the late Triassic. It had a large skull about long, and possibly reached long. It was an ambush hunter, snapping up anything small enough to fit in its huge jaws. It was very common during the Late Triassic (Carnian-Norian age) in what is now the American Southwest. History of discovery ''Anaschisma'' was erected by Branson (1905) from two metoposaurid skulls from the Popo Agie Formation (Carnian) of Wyoming. The generic name ''Anaschisma'' ("ripped up") was not explained but would derive from Ancient Greek ἀνασχίζω naskhizo"rip up, rend", likely alluding to the fragmented state of the original fossils noted by Branson: "The skulls were in a hard matrix of arenaceous shale, and had been broken in many pieces." The type species, ''A. browni'', was coined for the skull UC 447, while ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buettnererpeton
''Buettnererpeton'' is an extinct genus of large temnospondyls known from the Late Triassic Dockum Group in Texas. The type species, ''B. bakeri'', was long classified as part of other genera, such as '' Metoposaurus'' and ''Koskinonodon ''Anaschisma'' ("ripped up") is an extinct genus of large temnospondyls. These animals were part of the family called Metoposauridae, which filled the crocodile-like predatory Ecological niche, niches in the late Triassic. It had a large skull ab ...'', but was placed in its own genus in 2022. References {{Taxonbar, from=Q114652625 Metoposauridae Triassic temnospondyls of North America Fossil taxa described in 2022 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Oxford Formation
The New Oxford Formation is a mapped bedrock unit consisting primarily of sandstones, conglomerates, and shales. The New Oxford Formation was first described in Adams County, Pennsylvania in 1929, and over the following decade was mapped in adjacent York County, PennsylvaniaStose, G.W., and Jonas, A.I., 1939, Geology and mineral resources of York County, Pennsylvania: Pennsylvania Geological Survey County Report, 4th series, no. 67, 199 p. and Frederick County, Maryland.Jonas, A.I., and Stose, G.W., 1938, Geologic map of Frederick County and adjacent parts of Washington and Carroll Counties (Maryland): Maryland Geological Survey County Geologic Map, 1 sheet, scale 1:62,500 It was described as "red shale and sandstone with beds of micaceous sandstone, arkose, and conglomerate." The majority of this early mapping was done by George Willis Stose, Anna Isabel Jonas, and Florence Bascom. Depositional Environment The New Oxford Formation and other formations of the Newark Supergroup ... [...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] |
Apachesaurus
''Apachesaurus'' is an extinct genus of metoposaurid temnospondyls from western North America. Description and taxonomy ''Apachesaurus'' was described from the Late Triassic (late Norian-Rhaetian The Rhaetian is the latest age (geology), age of the Triassic period (geology), Period (in geochronology) or the uppermost stage (stratigraphy), stage of the Triassic system (stratigraphy), System (in chronostratigraphy). It was preceded by the N ...) Redonda Formation of eastern New Mexico as a small, diminutive genus of metoposaurid. The small elongate centra were used by Hunt (1993) to consider ''Apachesaurus'' a small species of metoposaurid. However, Gee ''et al.'' (2017, 2018) demonstrated that centra referred to ''Apachesaurus'' are juveniles rather than small adults, concluding that ''Apachesaurus'' specimens are juveniles, though they cautioned they could not determine whether these are ''Anaschisma'' or a distinct taxon in its own right.Gee, B.M., and Parker, W.G. 2018. M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eupelor
''Eupelor'' is a dubious genus of prehistoric amphibian belonging to the temnospondyl family Metoposauridae. Fossils have been found in present-day Pennsylvania, within the Newark Supergroup, dating to the Late Triassic (Norian). Taxonomy The ''Eupelor'' type species, ''E. durus'', was named ''Mastodonsaurus durus'' by Edward Drinker Cope in 1866 on the basis of AMNH 3927, a number of clavicles and the tooth AMNH 2333 (which could have belonged to a different temnospondyl apart from ''Eupelor''), from the Lockatong Formation (Phoenixville Tunnel site) of Phoenixville, Pennsylvania. In 1868 Cope allocated the species to its own genus, ''Eupelor'', based on differences from ''Metoposaurus'' (then known as ''Metopias''). Colbert and Imbrie (1956) reviewed all Triassic metoposaurids and concluded that ''Eupelor'' should be used for all metoposaurids from North America, especially ''Koskinonodon ''Anaschisma'' ("ripped up") is an extinct genus of large temnospondyls. These ani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tecovas Formation
The Tecovas Formation is a geological Formation (geology), formation in the Texas panhandle and eastern New Mexico. It is one of several formations encompassed by the Late Triassic Dockum Group.Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Triassic, North America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 518–521. . The lower unit of the Cooper Canyon Formation in Garza County to the south is stratigraphically equivalent to the Tecovas Formation. It is also contiguous with the Garita Creek Formation of New Mexico, as well as partially to the Santa Rosa Formation, New Mexico, Santa Rosa Formation. Vertebrate fauna See also * List of dinosaur-bearing rock formations References {{Reflist Carnian Stage Triassic geology of Texas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Triassic
The Late Triassic is the third and final epoch (geology), epoch of the Triassic geologic time scale, Period in the geologic time scale, spanning the time between annum, Ma and Ma (million years ago). It is preceded by the Middle Triassic Epoch and followed by the Early Jurassic Epoch. The corresponding series (stratigraphy), series of rock beds is known as the Upper Triassic. The Late Triassic is divided into the Carnian, Norian and Rhaetian Geologic time scale, ages. Many of the first dinosaurs evolved during the Late Triassic, including ''Plateosaurus'', ''Coelophysis'', ''Herrerasaurus'', and ''Eoraptor''. The Triassic–Jurassic extinction event began during this epoch and is one of the five major mass extinction events of the Earth. Etymology The Triassic was named in 1834 by Friedrich August von Namoh, Friedrich von Alberti, after a succession of three distinct rock layers (Greek meaning 'triad') that are widespread in southern Germany: the lower Buntsandstein (colourful ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anterior
Standard anatomical terms of location are used to describe unambiguously the anatomy of humans and other animals. The terms, typically derived from Latin or Greek roots, describe something in its standard anatomical position. This position provides a definition of what is at the front ("anterior"), behind ("posterior") and so on. As part of defining and describing terms, the body is described through the use of anatomical planes and axes. The meaning of terms that are used can change depending on whether a vertebrate is a biped or a quadruped, due to the difference in the neuraxis, or if an invertebrate is a non-bilaterian. A non-bilaterian has no anterior or posterior surface for example but can still have a descriptor used such as proximal or distal in relation to a body part that is nearest to, or furthest from its middle. International organisations have determined vocabularies that are often used as standards for subdisciplines of anatomy. For example, '' Termin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bluewater Creek Formation
The Bluewater Creek Formation is a geologic formation in west-central New Mexico. It preserves fossils dating back to the late Triassic period. Description The formation consists of red sandstones and mudstones and has a total thickness in excess of . It conformably overlies the Shinarump Conglomerate and conformably underlies the Petrified Forest Formation. The formation has been correlated with the Salitral Formation of north-central New Mexico on the basis of its lithology, but it is likely somewhat younger, with an age around 219 million years. Fossils The formation contains some fossil vertebrates and an extensive fossil flora. Fossil tetrapods from the Bluewater Creek Formation include the theropod dinosaur '' Camposaurus'', phytosaur '' Rutiodon'', the aetosaurs ''Desmatosuchus'' and '' Stagonolepis'', and the metoposaurid '' Anaschisma''. These are characteristic of the late Carnian. History of investigation Spencer G. Lucas and S.N. Hayden defined the Bluewater ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prefrontal Bone
The prefrontal bone is a bone separating the lacrimal and frontal bones in many tetrapod skulls. It first evolved in the sarcopterygian clade Rhipidistia, which includes lungfish and the Tetrapodomorpha. The prefrontal is found in most modern and extinct lungfish, amphibians and reptiles. The prefrontal is lost in early mammaliaforms and so is not present in modern mammals either. In dinosaurs The prefrontal bone is a very small bone near the top of the skull, which is lost in many groups of coelurosaurian theropod dinosaurs and is completely absent in their modern descendants, the bird Birds are a group of warm-blooded vertebrates constituting the class (biology), class Aves (), characterised by feathers, toothless beaked jaws, the Oviparity, laying of Eggshell, hard-shelled eggs, a high Metabolism, metabolic rate, a fou ...s. Conversely, a well developed prefrontal is considered to be a primitive feature in dinosaurs. The prefrontal makes contact with several other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
