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Silesaurus
''Silesaurus'' is a genus of silesaurid dinosauriform from the Late Triassic, of what is now Poland. Discovery Fossilized remains of ''Silesaurus'' have been found in the Keuper Claystone in Krasiejów near Opole, Silesia, Poland, which is also the origin of its name. The type species, ''Silesaurus opolensis'', was described by Jerzy Dzik in 2003. It is known from some 20 skeletons, making it one of the best-represented species of early dinosauriformes. Description ''Silesaurus'' measured approximately in length. Lightly built, it was probably a fast and agile animal with an active lifestyle. The snout was narrow with forward-pointing nostrils, and the large orbits likely provided ''Silesaurus'' with acute vision. Initially, ''Silesaurus'' was thought to be strictly herbivorous, but later research on coprolite contents indicates that it may have been insectivorous, feeding on insects such as the beetle '' Triamyxa''. The teeth of the animal were small, conical, and serrate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silesaurus Opolensis Holotype
''Silesaurus'' is a genus of silesaurid dinosauriform from the Late Triassic, of what is now Poland. Discovery Fossilized remains of ''Silesaurus'' have been found in the Keuper Claystone in Krasiejów near Opole, Silesia, Poland, which is also the origin of its name. The type species, ''Silesaurus opolensis'', was described by Jerzy Dzik in 2003. It is known from some 20 skeletons, making it one of the best-represented species of early dinosauriformes. Description ''Silesaurus'' measured approximately in length. Lightly built, it was probably a fast and agile animal with an active lifestyle. The snout was narrow with forward-pointing nostrils, and the large orbits likely provided ''Silesaurus'' with acute vision. Initially, ''Silesaurus'' was thought to be strictly herbivorous, but later research on coprolite contents indicates that it may have been insectivorous, feeding on insects such as the beetle '' Triamyxa''. The teeth of the animal were small, conical, and serrate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silesaurus Opolensis
''Silesaurus'' is a genus of silesaurid dinosauriform from the Late Triassic, of what is now Poland. Discovery Fossilized remains of ''Silesaurus'' have been found in the Keuper Claystone in Krasiejów near Opole, Silesia, Poland, which is also the origin of its name. The type species, ''Silesaurus opolensis'', was described by Jerzy Dzik in 2003. It is known from some 20 skeletons, making it one of the best-represented species of early dinosauriformes. Description ''Silesaurus'' measured approximately in length. Lightly built, it was probably a fast and agile animal with an active lifestyle. The snout was narrow with forward-pointing nostrils, and the large orbits likely provided ''Silesaurus'' with acute vision. Initially, ''Silesaurus'' was thought to be strictly herbivorous, but later research on coprolite contents indicates that it may have been insectivorous, feeding on insects such as the beetle '' Triamyxa''. The teeth of the animal were small, conical, and serrate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silesauridae
Silesauridae is an extinct family of Triassic dinosauriforms. It is most commonly considered to be a clade of non-dinosaur dinosauriforms, and the sister group of dinosaurs. Some studies have instead suggested that most or all silesaurids comprised an early diverging clade or a paraphyletic grade within ornithischian dinosaurs. Silesaurids have a consistent general body plan, with a fairly long neck and legs and possibly quadrupedal habits, but most silesaurids are heavily fragmentary nonetheless. Furthermore, they occupied a variety of ecological niches, with early silesaurids (such as '' Lewisuchus'') being carnivorous and later taxa (such as ''Kwanasaurus'') having adaptations for specialized herbivory. As indicated by the contents of referred coprolites, '' Silesaurus'' may have been insectivorous, feeding selectively on small beetles and other arthropods. Classification Silesauridae is typically considered the sister group to Dinosauria. The group was named in 2010 by Ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2003 In Paleontology
Plants Conifers Angiosperms Gnetophytes Fungi Arthropods Arachnids Insects Conodont paleozoology German paleontologist and stratigraphy, stratigrapher Heinz Walter Kozur (1942-2013) described the conodont genus ''Carnepigondolella''. Vertebrate paleozoology Parareptiles Non-avian dinosaurs Data courtesy of George Olshevsky's dinosaur genera list. Newly named birds Plesiosaurs Pterosaurs Synapsids Non-mammalian Mammals References {{portal, Paleontology [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triamyxa
''Triamyxa'' is an extinct genus of myxophagan beetle in the monotypic family Triamyxidae from the Carnian stage of Late Triassic, approximately 230 million years ago. It was found in the Keuper Claystone of Poland. The type species is ''T. coprolithica'' and it was identified from specimens found in the coprolite ZPAL AbIII/3520, likely belonging to the dinosauriform ''Silesaurus opolensis''. Because ''Triamyxa'' specimens were found inside coprolites, this may offer a new method of finding insect fossils aside from amber. It is currently the oldest known member of Myxophaga. It was interpreted as either the most basal member of Myxophaga, or a sister group to Hydroscaphidae The Hydroscaphidae are a small family of water beetles known commonly as skiff beetles. As of 2010, there are 23 species in the family. Several are recently described. These beetles are small, most under in length. They are tan to brown in col .... The specimens were preserved in 3D, with their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jerzy Dzik
Jerzy Dzik (born 25 February 1950) is a Polish paleontologist. He has described many species, genera, and families of conodonts, including the order Ozarkodinida (in 1976). In 2003, he described the dinosauriform '' Silesaurus'', from the Triassic of Poland.Dzik, J. (2003). "A beaked herbivorous archosaur with dinosaur affinities from the early Late Triassic of Poland." Journal of Vertebrate Paleontology, 23(3): 556-574. Tributes The conodont genus name '' Dzikodus'' Zhang 1998 is a tribute to J. Dzik. References * Dzik, J. 1975a. Spiroboloid millipeds from the Late Cretaceous of the Gobi Desert, Mongolia. Palaeontologia Polonica 33, 17-24. * Dzik, J. 1975b. The origin and early phylogeny of the cheilostomatous Bryozoa. Acta Palaeontologica Polonica 20, 3, 395-423. * Dzik, J. 1978a. A myodocopid ostracode with preserved appendages from the Upper Jurassic of the Volga River Region (USSR). Neues Jahrbuch für Geologie und Paläontologie, Monatshefte 1978, 7, 393-399. * Dzik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dinosauriformes
Dinosauromorpha is a clade of avemetatarsalian archosaurs (reptiles closer to birds than to crocodilians) that includes the Dinosauria (dinosaurs) and some of their close relatives. It was originally defined to include dinosauriforms and lagerpetids, with later formulations specifically excluding pterosaurs from the group. Birds are the only dinosauromorphs which survive to the present day. Classification The name "Dinosauromorpha" was briefly coined by Michael J. Benton in 1985. It was considered an alternative name for the group "Ornithosuchia", which was named by Jacques Gauthier to correspond to archosaurs closer to dinosaurs than to crocodilians. Although "Ornithosuchia" was later recognized as a misnomer (since ornithosuchids are now considered closer to crocodilians than to dinosaurs), it was still a more popular term than Dinosauromorpha in the 1980s. The group encompassed by Gauthier's "Ornithosuchia" and Benton's "Dinosauromorpha" is now given the name Avemetatar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epipophyses
Epipophyses are bony projections of the cervical vertebrae found in archosauromorphs, particularly dinosaurs (including some basal birds). These paired processes sit above the postzygapophyses on the rear of the vertebral neural arch. Their morphology is variable and ranges from small, simple, hill-like elevations to large, complex, winglike projections. Epipophyses provided large attachment areas for several neck muscles; large epipophyses are therefore indicative of a strong neck musculature. The presence of epipophyses is a synapomorphy (distinguishing feature) of the group Dinosauria. Epipophyses were present in the basal-most dinosaurs, but absent in the closest relatives of the group, such as ''Marasuchus'' and '' Silesaurus''. They were typical for most dinosaur lineages; however, they became lost in several derived theropod lineages in the wake of an increasingly S-shaped curvature of the neck. Several scientific papers have observed that epipophyses were present in vari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Krasiejów
Krasiejów (german: Krascheow) is a village in the administrative district of Gmina Ozimek, within Opole County, Opole Voivodeship, in south-western Poland. It lies approximately east of Ozimek and east of the regional capital Opole. The village has a population of 2,050. Paleontological localities Abundant skeletons of the Upper Triassic tetrapods (i.e., large Temnospondyli: '' Metoposaurus'' and ''Cyclotosaurus''; reptiles: ''Paleorhinus'', dinosauriformes ''Silesaurus'') were described from the pit. Two paleontological museums and large dinopark (so-called JuraPark) are at Krasiejów. Some microvertebrate fossils, fossil plants, bivalves, crustaceans and fish scales were also collected at the site. History The village was first mentioned in the 13th century, when it was part of Piast-ruled Poland. Its name is of Polish origin, and comes from the Old Polish words ''kraszenie'' or ''krasny''. Later on, the village was also part of Bohemia (Czechia), Prussia and German ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dinosauriform
Dinosauromorpha is a clade of avemetatarsalian archosaurs (reptiles closer to birds than to crocodilians) that includes the Dinosauria (dinosaurs) and some of their close relatives. It was originally defined to include dinosauriforms and lagerpetids, with later formulations specifically excluding pterosaurs from the group. Birds are the only dinosauromorphs which survive to the present day. Classification The name "Dinosauromorpha" was briefly coined by Michael J. Benton in 1985. It was considered an alternative name for the group "Ornithosuchia", which was named by Jacques Gauthier to correspond to archosaurs closer to dinosaurs than to crocodilians. Although "Ornithosuchia" was later recognized as a misnomer (since Ornithosuchidae, ornithosuchids are now considered closer to crocodilians than to dinosaurs), it was still a more popular term than Dinosauromorpha in the 1980s. The group encompassed by Gauthier's "Ornithosuchia" and Benton's "Dinosauromorpha" is now given the n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coprolite
A coprolite (also known as a coprolith) is fossilized feces. Coprolites are classified as trace fossils as opposed to body fossils, as they give evidence for the animal's behaviour (in this case, diet) rather than morphology. The name is derived from the Greek words κόπρος (''kopros'', meaning "dung") and λίθος (''lithos'', meaning "stone"). They were first described by William Buckland in 1829. Before this, they were known as "fossil fir cones" and "bezoar stones". They serve a valuable purpose in paleontology because they provide direct evidence of the predation and diet of extinct organisms. Coprolites may range in size from a few millimetres to over 60 centimetres. Coprolites, distinct from ''paleofeces'', are fossilized animal dung. Like other fossils, coprolites have had much of their original composition replaced by mineral deposits such as silicates and calcium carbonates. Paleofeces, on the other hand, retain much of their original organic composition ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Articular Processes
The articular processes or zygapophyses (Greek ζυγον = "yoke" (because it links two vertebrae) + απο = "away" + φυσις = "process") of a vertebra are projections of the vertebra that serve the purpose of fitting with an adjacent vertebra. The actual region of contact is called the ''articular facet''.Moore, Keith L. et al. (2010) ''Clinically Oriented Anatomy'', 6th Ed, p.442 fig. 4.2 Articular processes spring from the junctions of the pedicles and laminæ, and there are two right and left, and two superior and inferior. These stick out of an end of a vertebra to lock with a zygapophysis on the next vertebra, to make the backbone more stable. * The superior processes or prezygapophysis project upward from a lower vertebra, and their articular surfaces are directed more or less backward (oblique coronal plane). * The inferior processes or postzygapophysis project downward from a higher vertebra, and their articular surfaces are directed more or less forward and outwa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
