|
Ornithosuchus
''Ornithosuchus'' (meaning "bird crocodile") is an extinct genus of pseudosuchians from the Late Triassic (Carnian) Lossiemouth Sandstone of Scotland. It was originally thought to be the ancestor to the carnosaurian dinosaurs (such as ''Allosaurus''). However, it is now known to be more closely related to crocodilians than to dinosaurs. Description Despite this relationship to crocodiles, ''Ornithosuchus'' was able to walk on its hind legs, like many dinosaurs. However, it probably spent most of its time on all fours, only moving bipedally when it needed to run rapidly. Its skull also resembled those of theropod dinosaurs, but more primitive features included the presence of five toes on each foot and a double row of armoured plates along the animal's back. ''Ornithosuchus'' has traditionally been estimated at a length of about around . Classification A single species of ''Ornithosuchus'' is recognized, ''O. woodwardi''. ''Ornithosuchus taylori'' is a synonym.M. Belén v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ornithosuchidae
Ornithosuchidae is an extinct family of pseudosuchian archosaurs (distant relatives of modern crocodilians) from the Triassic period. Ornithosuchids were quadrupedal and facultatively bipedal (e.g. like chimpanzees), meaning that they had the ability to walk on two legs for short periods of time. They had distinctive, downturned snouts, unique, "crocodile-reversed" ankle bones, and several other features that distinguish them from other archosaurs. Ornithosuchids were geographically widespread during the Carnian and Norian stages of the Late Triassic with members known from Argentina, Brazil, and the United Kingdom. Four genera, comprising ''Ornithosuchus'', '' Venaticosuchus, Dynamosuchus,'' and '' Riojasuchus'' are presently known. The family was first erected by German paleontologist Friedrich von Huene in 1908. Description Skull Ornithosuchids can be identified by the presence of an arched diastema, a gap between the teeth at the front of the snout. When the jaw is c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ornithosuchids
Ornithosuchidae is an extinct family of pseudosuchian archosaurs (distant relatives of modern crocodilians) from the Triassic period. Ornithosuchids were quadrupedal and facultatively bipedal (e.g. like chimpanzees), meaning that they had the ability to walk on two legs for short periods of time. They had distinctive, downturned snouts, unique, "crocodile-reversed" ankle bones, and several other features that distinguish them from other archosaurs. Ornithosuchids were geographically widespread during the Carnian and Norian stages of the Late Triassic with members known from Argentina, Brazil, and the United Kingdom. Four genera, comprising ''Ornithosuchus'', ''Venaticosuchus, Dynamosuchus,'' and ''Riojasuchus'' are presently known. The family was first erected by German paleontologist Friedrich von Huene in 1908. Description Skull Ornithosuchids can be identified by the presence of an arched diastema, a gap between the teeth at the front of the snout. When the jaw is clos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dasygnathoides
''Dasygnathoides'' is an extinct genus of pseudosuchian from the Late Triassic (Carnian) Lossiemouth Sandstone of Scotland. Classification "''Dasygnathus''" ''longidens'' was erected by Thomas Huxley for a maxilla from the Lossiemouth Sandstone in 1877. The genus name '' Dasygnathus'' had already been used for a coleopteran insect, so Oskar Kuhn renamed it ''Dasygnathoides''.Kukn, O., 1961, Fossilium Catalogus I: Animalia, Reptila, supplementum 1, n. 2, p. 1-163. Although synonymized with ''Ornithosuchus'' by Walker (1964), a 2016 study found ''Dasygnathoides'' indeterminate beyond Pseudosuchia. For this reason, many paleontologists consider '''Dasygnathoides a nomem dubium. The lack of synapomorphies shared by ornithosuchids indicates that ''Dasygnathoides'' was not an ornithosuchid as previously thought, but there are no links between it and any other family of pseudosuchians. It has remained impossible to resolve further. The morphology of the maxilla is quite different ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venaticosuchus
''Venaticosuchus'' is a genus of pseudosuchian archosaurs from the family Ornithosuchidae. Known from a single species, ''Venaticosuchus rusconii,'' this genus is described based on an incomplete skull and jaw (as well as a lost partial forelimb and osteoderms) collected from the Late Triassic (Carnian) Ischigualasto Formation in the Ischigualasto-Villa Unión Basin in northwestern Argentina, which was deposited around 230 million years ago. This fossil material has been termed the holotype specimen PVL 2578. ''Venaticosuchus'' incorporated a myriad of features present in the other two genera of ornithosuchids, ''Ornithosuchus'' and '' Riojasuchus''. However, it also had several unique traits, relating to the lower jaw. Reconstructions of the jaw musculature of ''Venaticosuchus'' showed that it had a slow, strong bite, similar to those of herbivorous aetosaurs such as ''Desmatosuchus''. ''Venaticosuchus'' and other ornithosuchids were likely specialized scavengers, due to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Riojasuchus
''Riojasuchus'' is an extinct genus of Late Triassic ( Norian) quadrupedal archosaur. ''Riojasuchus'' is a member of Ornithosuchidae, a family of facultatively bipedal carnivores that were geographically widespread during the Late Triassic. Two other genera, ''Ornithosuchus'' and ''Venaticosuchus'', are currently known. The holotype specimen is PVL 3827. It was found in the Los Colorados Formation of the Ischigualasto-Villa Unión Basin in northwestern Argentina. Discovery and naming The holotype specimen is PVL 3827, consisting of a mostly complete crania and a partial postcrania. A majority of the postcranial material was preserved. The skeleton was found with others in the upper section of the Los Colorados Formation. Other than the holotype, it is known from three skeletons. Description The skull of the type specimen is long, and has a large, curved snout and short mandibles. Distinguishing characteristics Many characteristics were identified by Bonaparte in 196 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudosuchia
Pseudosuchia is one of two major divisions of Archosauria, including living crocodilians and all archosaurs more closely related to crocodilians than to birds. Pseudosuchians are also informally known as "crocodilian-line archosaurs". Prior to 2011, the clade Pseudosuchia was often called Crurotarsi in reference to the crurotarsal ankle found in almost all members of the group, which traditionally included phytosaurs, ornithosuchids, and suchians. However, a major 2011 study of Triassic archosaur relations proposed that phytosaurs were not closely related to other traditional "crurotarsans", at least compared to "bird-line archosaurs" (Avemetatarsalians) such as pterosaurs and dinosaurs. As a result, the possession of a crurotarsal ankle was considered a plesiomorphic ("primitive") feature retained by pseudosuchians. Crurotarsi now refers to a broader group of reptiles including Pseudosuchia, Phytosauria, and Avemetatarsalia. Despite Pseudosuchia meaning "false crocodiles", the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lossiemouth Sandstone
The Lossiemouth Sandstone is a Middle to Late Triassic (Ladinian to Norian) age geological formation. It is exposed on the south side of the Moray Firth near Lossiemouth and near Golspie in Sutherland. Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel et al., 2004, "Dinosaur distribution." pp.517-607 Fossil content See also * List of dinosaur-bearing rock formations ** List of stratigraphic units with indeterminate dinosaur fossils * List of fossiliferous stratigraphic units in Scotland * Ischigualasto Formation, contemporaneous fossiliferous formation of the Ischigualasto-Villa Unión Basin, Argentina * Candelária Formation, contemporaneous fossiliferous formation of the Paraná Basin in southeastern Brazil * Molteno Formation, contemporaneous fossiliferous formation of the Karoo Basin in southern Africa * Fremouw Formation The Fremouw Formation is a Triassic-age rock formation in the Transantarctic Mountains of Antarcti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allosaurus
''Allosaurus'' () is a genus of large carnosaurian theropod dinosaur that lived 155 to 145 million years ago during the Late Jurassic epoch ( Kimmeridgian to late Tithonian). The name "''Allosaurus''" means "different lizard" alluding to its unique (at the time of its discovery) concave vertebrae. It is derived from the Greek (') ("different, other") and (') ("lizard / generic reptile"). The first fossil remains that could definitively be ascribed to this genus were described in 1877 by paleontologist Othniel Charles Marsh. As one of the first well-known theropod dinosaurs, it has long attracted attention outside of paleontological circles. ''Allosaurus'' was a large bipedal predator. Its skull was light, robust and equipped with dozens of sharp, serrated teeth. It averaged in length for ''A. fragilis'', with the largest specimens estimated as being long. Relative to the large and powerful hindlimbs, its three-fingered forelimbs were small, and the body was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Triassic
The Late Triassic is the third and final epoch of the Triassic Period in the geologic time scale, spanning the time between Ma and Ma (million years ago). It is preceded by the Middle Triassic Epoch and followed by the Early Jurassic Epoch. The corresponding series of rock beds is known as the Upper Triassic. The Late Triassic is divided into the Carnian, Norian and Rhaetian Ages. Many of the first dinosaurs evolved during the Late Triassic, including ''Plateosaurus'', ''Coelophysis'', 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 von Alberti, after a succession of three distinct rock layers (Greek meaning 'triad') that are widespread in southern Germany: the lower Buntsandstein (colourful sandstone'')'', the middle Muschelkalk (shell-bearing limestone) and the upper Keuper (coloured clay). The Late Triassic Ser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coleoptera
Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 described species, is the largest of all orders, constituting almost 40% of described insects and 25% of all known animal life-forms; new species are discovered frequently, with estimates suggesting that there are between 0.9 and 2.1 million total species. Found in almost every habitat except the sea and the polar regions, they interact with their ecosystems in several ways: beetles often feed on plants and fungi, break down animal and plant debris, and eat other invertebrates. Some species are serious agricultural pests, such as the Colorado potato beetle, while others such as Coccinellidae (ladybirds or ladybugs) eat aphids, scale insects, thrips, and other plant-sucking insects that damage crops. Beetles typically have a particularly hard e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Triassic Reptiles Of Europe
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 is the habit of being late or delaying arrival. Being late as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
