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Chiniquodontid
Chiniquodontidae is an extinct family of basal probainognathian cynodonts that lived in what is now Africa and South America during the Middle and Late Triassic. It is currently thought to include four valid genera: ''Aleodon'', ''Chiniquodon'', ''Cromptodon'' and ''Riojanodon''. Two additional genera (''Belesodon'' and ''Probelesodon'') are usually regarded as junior synonym In taxonomy, the scientific classification of living organisms, a synonym is an alternative scientific name for the accepted scientific name of a taxon. The botanical and zoological codes of nomenclature treat the concept of synonymy differently. ...s of ''Chiniquodon''. References Probainognathia Prehistoric therapsid families Taxa named by Friedrich von Huene {{paleo-cynodont-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cromptodon
''Cromptodon'' is an extinct genus of cynodonts from the Triassic of Cerro Bayo de Portrerillos, Cerro de las Cabras Formation, Argentina, South America. It is known only from PVL 3858, a mandible. Description The skull has been estimated to have a length of . The morphology and distribution of the cups on the postcanines is considered to be very similar to ''Thrinaxodon liorhinus'' differing in the fact that the cingulum is lingually wider. The coronoid, prearticular and angular processes, Bonaparte considered, were more developed than those in ''Thrinaxodon'', being more similar to ''Tribolodon'' (now '' Bolotridon''). The lower postcanines are buccolingually expanded. Classification Bonaparte originally classified ''Cromptodon'' as a galesaurid. In 1991, J. A. Hopson, pointed out a resemblance between the teeth of ''Cromptodon'' and juvenile ''Aleodon'' and reclassified ''Cromptodon'' as a chiniquodontid. In 2003, Fernando Abdala and Norberto P. Giannini systematically de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chiniquodon Theotonicus
''Chiniquodon'' is an extinct genus of carnivorous cynodonts, which lived during the Late Triassic (Carnian) in South America (Argentina and Brazil) and Africa (Namibia and Madagascar). ''Chiniquodon'' was closely related to the genus ''Aleodon'', and close to the ancestry of mammals. Other contemporaries included early dinosaurs. As both groups filled a similar ecological niche, fairly large therapsid hunters such as ''Chiniquodon'' may have been outcompeted by dinosaurs. Classification ''Chiniquodon theotonicus'', the type species, is from the Santa Maria Formation, Brazil and Chañares Formation, Ischigualasto-Villa Unión Basin, northwestern Argentina. This species is known from a number of skulls. The holotype is in the paleontological collection at Tübingen University, Germany. ''Chiniquodon kitchingi'', from the Santa Maria Formation of Brazil, was described in 1982 by A. M. Sá-Teixeira based on a single skull missing the lower jaw. When first described, it was assign ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Riojanodon
''Riojanodon'' is an extinct genus of chiniquodontid cynodont that inhabited what is now Argentina during the latest Middle and earliest Late Triassic epochs. It is a monotypic genus known from the species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ... ''R. nenoi''. References {{Taxonbar, from=Q131445647 Late Triassic synapsids Probainognathia Fossil taxa described in 2024 ... [...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] |
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] |
Friedrich Von Huene
Baron Friedrich Richard von Hoyningen-Huene (22 March 1875 – 4 April 1969) was a German nobleman paleontologist who described a large number of dinosaurs, more than anyone else in 20th-century Europe. He studied a range of Permo-Carboniferous tetrapods. He worked at the collections of the institute and museum for geology and paleontology at the University of Tübingen. Biography Von Huene was born in Tübingen, Kingdom of Württemberg and came from a noble Baltic German family. He took this Baltic identity to heart and would later call his home on Zeppelinstraße (now Payerstraße) as ''Villa Baltica''. His father Johannes von Hoyningen called Huene was a Lutheran minister who had studied theology at Göttingen, Tübingen and Dorpat. His mother Alexandra Baronesse Stackelberg came from an Estonian noble family. The junior Huene was also brought up with deeply religious beliefs. He grew up in Switzerland as his father taught at Basel. He also visited Latvia as a child and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aleodon
''Aleodon'' is an extinct genus of cynodonts that lived from the Middle to Late Triassic. Relatively few analyses have been conducted to identify the phylogenetic placement of ''Aleodon'', although some have placed it as a sister taxon to '' Chiniquodon''. Two species of ''Aleodon'' are recognized: ''A. brachyrhamphus'' which was discovered in Tanzania, and ''A. cromptoni'' which was discovered most recently in Brazil. The name for the genus ''Aleodon'' was created when Alfred W. "Fuzz" Crompton initially discovered the type species, ''Aleodon brachyrhamphus''. The genus name, "''Aleodon''" referred to the grinding nature of the postcanine teeth, while "''brachyrhamphus''" referred to the relatively short snout of the specimen. The most recently discovered species, ''A. cromptoni'' was named after Crompton. Discovery and classification In 1955, ''Aleodon'' was initially classified as a gomphodont cynodont based on the partial skull and lower jaw fossils found in 1933 in Tanza ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family (, : ) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Probainognathia
Probainognathia is one of the two major subgroups of the clade Eucynodontia, the other being Cynognathia. The earliest forms were carnivorous and insectivorous, though some groups eventually also evolved herbivorous diets. The earliest and most basal probainognathian is the Middle Triassic (Anisian) aged ''Lumkuia'', from South Africa, though probainognathians would not become prominent until the mid Norian stage of the Late Triassic. Three groups survived the Triassic–Jurassic extinction event, extinction at the end of Triassic: Tritheledontidae and Tritylodontidae, which both survived until the Jurassic—the latter even into the Cretaceous (''Montirictus'' and ''Xenocretosuchus'')—and Mammaliaformes, which includes the mammals. Phylogeny Below is a cladogram from Ruta, Botha-Brink, Mitchell and Benton (2013) showing one hypothesis of cynodont relationships: Cladogram from Stefanello ''et al.'' (2023): See also * Evolution of mammals * List of prehistoric mammals Refe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cynodont
Cynodontia () is a clade of eutheriodont therapsids that first appeared in the Late Permian (approximately 260 Megaannum, mya), and extensively diversified after the Permian–Triassic extinction event. Mammals are cynodonts, as are their extinct ancestors and close relatives (Mammaliaformes), having evolved from advanced probainognathian cynodonts during the Late Triassic. Non-mammalian cynodonts occupied a variety of ecological niches, both as carnivores and as herbivores. Following the emergence of mammals, most other cynodont lines went extinct, with the last known non-mammaliaform cynodont group, the Tritylodontidae, having its youngest records in the Early Cretaceous. Description Early cynodonts have many of the skeletal characteristics of mammals. The teeth were fully differentiated and the braincase bulged at the back of the head. Outside of some Crown group, crown-group mammals (notably the therians), all cynodonts probably laid eggs. The temporal fenestrae#Fenestra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Junior Synonym
In taxonomy, the scientific classification of living organisms, a synonym is an alternative scientific name for the accepted scientific name of a taxon. The botanical and zoological codes of nomenclature treat the concept of synonymy differently. * In botanical nomenclature, a synonym is a scientific name that applies to a taxon that now goes by a different scientific name. For example, Linnaeus was the first to give a scientific name (under the currently used system of scientific nomenclature) to the Norway spruce, which he called '' Pinus abies''. This name is no longer in use, so it is now a synonym of the current scientific name, '' Picea abies''. * In zoology, moving a species from one genus to another results in a different binomen, but the name is considered an alternative combination rather than a synonym. The concept of synonymy in zoology is reserved for two names at the same rank that refers to a taxon at that rank – for example, the name ''Papilio prorsa'' Linnaeus, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
