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Pantotheria
Pantotheria is an abandoned taxon of Mesozoic mammals. This group is now considered an informal "wastebasket" taxon and has been replaced by Dryolestida as well as other groups. It is sometimes treated as an infraclass and older books refer to it as being related to symmetrodonts. One classification makes it an infraclass with a single order, Eupantotheria. Taxonomy List of mammals that were at one time included in the group PantotheriaMikko's Phylogeny Archiv *Genus †'' Tribactonodon, Tribactonodon bonfieldi'' Sigogneau-Russell, Hooker & Ensom 2001 *Genus †'' Paraungulatum rectangularis'' Bonaparte 1999 *Genus †'' Argaliatherium robustum '' Cifelli & Davis 2015 *Genus †'' Carinalestes murensis'' Cifelli & Davis 2015 *Genus †'' Hypomylos'' Sigogneau-Russell 1992 *Family † Picopsidae Fox 1980 **Genus †'' Picopsis pattersoni'' Fox 1980 **Genus †'' Tirotherium aptum'' Montellano-Ballesteros & Fox 2015 *Family † Casamiqueliidae Bonaparte 1999 **Genus †'' Casam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trituberculata
Trituberculata is an extinct group of animals existing in the fossil record from about 215 – 85 MYA. It contains the ancestors of Placentalia and Marsupialia; all modern mammals except Monotremata are descended from trituberculates. It is named for the three tubercles (cusps) of the molar teeth (not to be confused with Triconodonta). The clade Trituberculata is not always regarded as a valid one, and it likely does not form a monophyletic group. Instead, some of them may be "true" basal mammals (although not always closest related to each other), while others (such as the symmetrodonts) may fall just outside the therian crown group. See also *Eutheria *Multituberculata Multituberculata (commonly known as multituberculates, named for the multiple tubercles of their teeth) is an extinct Order (biology), order of rodent-like mammals with a fossil record spanning over 130 million years. They first appeared in the M ... References Jurassic mammals Cretaceous mammals Obsol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dryolestida
Dryolestida is an extinct order of mammals, known from the Jurassic and Cretaceous. They are considered basal members of the clade Cladotheria, close to the ancestry of therian mammals. It is also believed that they developed a fully mammalian jaw and also had the three middle ear bones. Most members of the group, as with most Mesozoic mammals, are only known from fragmentary tooth and jaw remains. The group contains Dryolestidae and the possibly paraphyletic Paurodontidae, and some other unplaced genera, which were small insectivores, known from the Middle Jurassic to Early Cretaceous of Laurasia, primarily Europe and North America, with a single record from Asia. During the Late Jurassic in North America and from the Late Jurassic to Early Cretaceous in Europe, they were among the most diverse mammal groups. They have sometimes been placed as part of a broader group, the "Dryolestoidea", which typically includes Dryolestida and Meridiolestida, a diverse group of mammals in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jurassic
The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately 143.1 Mya. The Jurassic constitutes the second and middle period of the Mesozoic, Mesozoic Era as well as the eighth period of the Phanerozoic, Phanerozoic Eon and is named after the Jura Mountains, where limestone strata from the period were first identified. The start of the Jurassic was marked by the major Triassic–Jurassic extinction event, associated with the eruption of the Central Atlantic magmatic province, Central Atlantic Magmatic Province (CAMP). The beginning of the Toarcian Age started around 183 million years ago and is marked by the Toarcian Oceanic Anoxic Event, a global episode of Anoxic event, oceanic anoxia, ocean acidification, and elevated global temperatures associated with extinctions, likely caused by the eruption of the Kar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wilhelm Otto Dietrich
Wilhelm Otto Dietrich (30 July 1881 – 26 March 1964) was a German (later East German) paleontologist who took a special interest in the study of Tertiary and Quaternary mammals. He was a curator of paleontology at the Natural History Museum, Berlin. Dietrich was born in Senden near Ulm to mill manager Otto and Maria née Kramer. After studying at the Ulm gymnasium he joined the Technical University at Stuttgart before transferring to the University of Tübingen in 1901. He studied geology and paleontology and received a doctorate in 1903 under Ernst Koken. He studied petrology at Freburg and then worked from 1904 as an assistant to Ernst Anton Wülfing in Danzig. He developed otosclerosis in 1907 and had to move to Switzerland for treatment but he progressively lost hearing and became completely deaf. He became an assistant at Stuttgart under Eberhard Fraas and joined an excavation at Steinheim-on-Murr where the dig discovered a giant deer and a mammoth (''Elephas primigenius'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brancatherulum
''Brancatherulum'' is an extinct genus of Late Jurassic (Kimmeridgian - Tithonian) mammal from the Tendaguru Formation of Lindi Region of Tanzania. It is based on a single toothless dentary 21 mm in length. It is currently considered either a stem- zatherian or dryolestidan. See also * Prehistoric mammal ** List of prehistoric mammals This is an incomplete list of prehistoric mammals. It does not include List of mammals, extant mammals or List of extinct mammals, recently extinct mammals. For extinct primate species, see: list of fossil primates.Mikko's Phylogeny Archiv Ma ... References Cladotheria Late Jurassic mammals of Africa Fossil taxa described in 1927 Tendaguru fauna Prehistoric mammal genera {{jurassic-mammal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paurodontidae
Paurodontidae is a family of Late Jurassic to Early Cretaceous mammals in the order Dryolestida. Remains of paurodontids have been found in the United States, Britain, Portugal, and Tanzania. The group likely represents a paraphyletic group of basal non dryolestid dryolestidans. ''Paurodon'' has been suggested to have been a specilast feeder on earthworms due to the morphology of its teeth closely resembling that of the golden mole genus ''Amblysomus ''Amblysomus'' (also narrow-headed golden mole or South African golden mole) is a genus of the golden mole family, Chrysochloridae, comprising five species of the small, insect-eating, burrowing mammals endemic to Southern Africa. All five spec ...''.A.O. Averianov and T. Martin (2015). "Ontogeny and taxonomy of Paurodon valens (Mammalia, Cladotheria) from the Upper Jurassic Morrison Formation of USA" (PDF). Proceedings of the Zoological Institute of the Russian Academy of Sciences 319 (3): 326–340. References Dryolestida ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Donodon
''Donodon'' is an extinct genus of mammal from the Ksar Metlili Formation of Talssint, Morocco, which has been dated to the Late Jurassic to Early Cretaceous epochs (Tithonian–Berriasian ages). The type species ''D. perscriptoris'' was described in 1991 by the palaeontologist Denise Sigogneau-Russell. A second species, ''D. minor'', was named in 2022. ''Donodon'' was a member of Cladotheria, a group that includes therian mammals (marsupials and placentals) and some of their closest relatives. It differed from dryolestids in having upper molars that were not compressed mesiodistally. Some studies have suggested that it was closely related to various South American cladotherians in the clade Meridiolestida, with specific similarities to '' Mesungulatum'', a herbivorous mesungulatid, being noted.Bonaparte, J.F. 2002. New Dryolestida (Theria) from the LateCretaceous of Los Alamitos, Argentina, and paleogeographicalcomments.Neues Jahrbuch fu ̈r Geologie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Donodontidae
Donodontidae is an extinct family of cladotherian mammals known from the Late Jurassic and Early Cretaceous of North Africa. When originally named in 1991, Donodontidae was a Monotypic taxon, monotypic family containing a single species: ''Donodon, Donodon perscriptoris''. In 2022, four more species were designated and placed within the family: ''Donodon minor'', ''Stylodens, Stylodens amerrukensis'', ''Anoualestes, Anoualestes incidens'', and ''Amazighodon, Amazighodon orbis''. All five species are Endemism, endemic to the Ksar Metlili Formation of Morocco, which is dated to the Tithonian (last stage of the Jurassic) and Berriasian (first stage of the Cretaceous). Donodontid fossils are restricted to postcanine teeth and associated jaw fragments. Teeth Donodontid molars are pre-tribosphenic, a form approaching the Tribosphenic molar, tribosphenic teeth of Theria, therian mammals and their closest relatives. The lower molars are known in ''Donodon'', ''Anoualestes'', and ''Amazi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brandoniidae
Dryolestidae is an extinct family of Mesozoic mammals, known from the Middle Jurassic to the Early Cretaceous of the North Hemisphere. The oldest known member, '' Anthracolestes'', is known from the Middle Jurassic Itat Formation of Western Siberia, but most other representatives are known from the Late Jurassic of North America and the Late Jurassic and Early Cretaceous of Europe. Most members are only known from isolated teeth and jaw fragments. Like many other groups of early mammals, they are thought to have been insectivores. They are generally classified in Cladotheria, meaning that they are considered to be more closely related to marsupials and placentals than to monotremes. They are placed as part of the broader Dryolestida, which also includes the (possibly paraphyletic) Paurodontidae, and also sometimes the South American-Antarctic Meridiolestida, which are often considered unrelated cladotherians. Dryolestidae taxon is not based on a phylogenetic definition, but inst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
