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Djadochtatherioidea
Djadochtatherioidea is a superfamily of extinct mammals known from the upper Cretaceous and Paleocene of what is now Central Asia, North America and Europe. They were members of the order Multituberculata. These were very ecologically diverse; several were jerboa-like hoppers, while others like '' Mangasbaatar'' were large sized and fossorial. Unusually for multituberculates, some of this group are represented by very good remains. All upper Cretaceous Mongolian multituberculates are included with one exception, the genus '' Buginbaatar''. This superfamily is further subdivided into three families and several other genera, as listed in the table. The Djadochtatherioids are within the suborder of Cimolodonta. Djadochtatherioidea was established by Zofia Kielan-Jaworowska and Jørn Hurum in 2001 as a replacement for the previously proposed Djadochtatheria that they had proposed in 1997. Shared characteristics of the group are dental formula Dentition pertains to the developm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nemegtbaatar
''Nemegtbaatar'' is an extinct genus of mammal from the Upper Cretaceous Period of what is now Central Asia. It belonged to the order Multituberculata. ''Nemegtbaatar'' is within the suborder Cimolodonta and is a member of the superfamily Djadochtatherioidea. The genus ''Nemegtbaatar'' (Kielan-Jaworowska, 1974) was named after the Nemegt Valley and Ulan Bator, the capital of Mongolia. The type species is ''Nemegtbaatar gobiensis.'' It was discovered in Campanian aged strata of the Barun Goyot Formation in the Gobi Desert of Mongolia. Fossils of this species have been found in rocks dated from 76 to 71 million years ago, correlating to the Campanian and early Maastrichtian ages. With several intact skulls having been found, it can be determined that ''N.gobiensis'' has a dental formula of with a "roughly triangular" snout. ''Nemegtbaatar'' is possibly derived from a '' Bulganbaatar'' ancestor, based on a comparison of their dentition. ''Nemegtbaatar'' was a relatively la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 Middle Jurassic, and reached a peak diversity during the Late Cretaceous and Paleocene. They eventually declined from the mid-Paleocene onwards, disappearing from the known fossil record in the late Eocene. They are the most diverse order of Mesozoic mammals with more than 200 species known, ranging from mouse-sized to beaver-sized. These species occupied a diversity of ecological niches, ranging from burrow-dwelling to squirrel-like arborealism to jerboa-like hoppers. Multituberculates are usually placed as Crown group, crown mammals outside either of the two main groups of living mammals, Theria — placentals and marsupials — and Monotremata,Agustí-Antón 2002, pp 3-4 but usually as closer to Theria than to monotremes. They are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cimolodonta
Cimolodonta is a clade of Multituberculata, multituberculate mammals that lived from the Cretaceous to the Eocene. They probably lived something of a rodent-like existence until their ecological niche was assumed by true rodents. The more basal multituberculates are found in a different suborder, "Plagiaulacida", a Paraphyly, paraphyletic group containing all non cimolodontan multituberculates. Cimolodonta is apparently a natural (monophyletic) suborder. Remains have been identified from across the Northern Hemisphere. They first appeared during the Aptian extinction, Aptian, and completely replaced the more primitive plagiaulacidans by the early Late Cretaceous. The taxon is recognized as the informal Paracimexomys group and the superfamilies Djadochtatherioidea, Taeniolabidoidea, and Ptilodontoidea. Additionally, and of uncertain affinities, are the families Cimolomyidae, Boffius, Boffiidae, Eucosmodontidae, Kogaionidae, Microcosmodontidae and the two genera ''Uzbekbaatar'' and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulganbaatar
''Bulganbaatar'' is an extinct genus of early mammals from the Upper Cretaceous. It is a member of the extinct order Multituberculata. It lies within the suborder Cimolodonta and is a member of the superfamily Djadochtatherioidea. The genus ''Bulganbaatar'' was named by Zofia Kielan-Jaworowska in 1974 after the village of Bulgan situated near Bayn Dzak. It is one of many Cretaceous aged mammal discoveries made by Kielan-Jaworowska and co-workers from Central Asian sites. Kielan-Jaworowska considered ''B.nemegtbaatorides'' to be the ancestor to the genus ''Nemegtbaatar'' due to similarity but more derived teeth in the latter, hence the names. According to Kielan-Jaworowska and Hurum, both ''Bulganbaatar'' and ''Nemegtbaatar'' are distinctive for exhibiting "elongation of the last upper premolar and molars, and an increase in their cusp numbers." Fossil remains of ''Bulganbaatar'' have been found in Upper Cretaceous-aged strata of the Djadokhta Formation of Mongolia and Kazakh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucosmodontidae
Eucosmodontidae is a poorly preserved family of fossil mammals within the extinct order Multituberculata. Representatives are known from strata dating from the Upper Cretaceous through the Lower Eocene of North America, as well as the Paleocene to Eocene of Europe. The family is part of the suborder of Cimolodonta. They might be related with the Djadochtatherioidea but without further finds, this remains unclear. Other than a partial snout, fossil evidence is limited to teeth. A 2021 study vindicates this relationship.Smith, Thierry; Codrea, Vlad A.; Devillet, Ghéreint; Solomon, Alexandru A. (2021-09-24). "A New Mammal Skull from the Late Cretaceous of Romania and Phylogenetic Affinities of Kogaionid Multituberculates". Journal of Mammalian Evolution. 29: 1–26. doi:10.1007/s10914-021-09564-7. ISSN 1064-7554. S2CID 244194193. The taxonomic name Eucosmodontidae was given by Jepsen in 1940. Some authors interpret this version of Eucosmodontidae and Microcosmodontidae as being ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sloanbaataridae
Sloanbaataridae is a family of fossil mammals within the extinct order Multituberculata. Remains are known from the Upper Cretaceous of Mongolia. These small herbivores lived during the "age of the dinosaurs". This family is part of the suborder Cimolodonta Cimolodonta is a clade of Multituberculata, multituberculate mammals that lived from the Cretaceous to the Eocene. They probably lived something of a rodent-like existence until their ecological niche was assumed by true rodents. The more basal .... The family Sloanbaataridae was named by Kielan-Jaworowska, Z. in 1974. References * Kielan-Jaworowska (1974), "Multituberculate succession in the Late Cretaceous of the Gobi Desert (Mongolia)", ''Palaeontologica Polonica'', 30, p. 23-44. * Kielan-Jaworowska, Z. & Hurum, J.H. (2001), "Phylogeny and Systematics of multituberculate mammals", ''Paleontology'' 44, p. 389-429. * Much of this information has been derived froMesozoic Mammals: Djadochtatherioidea, an Intern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Djadochtatheriidae
Djadochtatheriidae is a family of fossil mammals within the extinct order Multituberculata. Remains are known from the Upper Cretaceous of Central Asia. These animals lived during the Mesozoic, also known as the "age of the dinosaurs". This family is part of the suborder of Cimolodonta. The taxon Djadochtatheriidae was named by Zofia Kielan-Jaworowska and Jørn Hurum in 1997. Multituberculates are a rather diverse group in terms of locomotion and diet. Forms like '' Kryptobaatar'' and ''Catopsbaatar'' were hopping, jerboa Jerboas () are the members of the family Dipodidae. They are hopping desert rodents found throughout North Africa and Asia. They tend to live in hot deserts. When chased, jerboas can run at up to . Some species are preyed on by little owls (''A ...-like omnivores (and this is probably the ancestral condition for the group, given that '' Nemegtbaatar'' also had this lifestyle), while '' Mangasbaatar'' was a robust, digging herbivore.Rougier et al, 2016 Note ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boffius
''Boffius'' is a genus of mammal from the Paleocene of Europe, which was named by Vianey-Liaud M. in 1979. It is a member of the extinct order of Multituberculata. Boffius lies within the suborder Cimolodonta and is the only known member of the family Boffiidae (Hahn & Hahn, 1983). The species ''Boffius splendidus'' is known from the Lower Paleocene Hainin Formation found in Hainaut, Belgium. It was a relatively large multituberculate. A 2021 study recovers it as part of Djadochtatherioidea.Smith, Thierry; Codrea, Vlad A.; Devillet, Ghéreint; Solomon, Alexandru A. (2021-09-24). "A New Mammal Skull from the Late Cretaceous of Romania and Phylogenetic Affinities of Kogaionid Multituberculates". Journal of Mammalian Evolution. 29: 1–26. doi:10.1007/s10914-021-09564-7. ISSN 1064-7554. S2CID 244194193. References Further reading * Vianey-Liaud (1979), "Les Mammifères montiens de Hainin (Paléocene moyen de Belgique). Part I, Multituberculés". ''Palaeovertebrata'' 9, p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chulsanbaatar
''Chulsanbaatar'' is an extinct genus of mammal from the Cretaceous of Mongolia. It was a member of the order of Multituberculata and is within the suborder Cimolodonta. The genus ''Chulsanbaatar'' was named by Zofia Kielan-Jaworowska in 1974 , after the locality of Khulsan near the dig sites where these organisms were found, and Ulan Bator, the capital of Mongolia. Fossil remains of the species ''Chulsanbaatar vulgaris'' have been found in multiple localities in the Gobi Desert, including the Red Beds of Hermiin Tsav (also known as Khermeen Tsav, part of the Barun Goyot Formation) in Mongolia. They range in the fossil record from 84 to 71 million years ago, from the late Santonian, through the Campanian and early Maastrichtian ages. This small multituberculate had a long skull. Remarkably, it has been possible to study the ear bones, which shows how well some of the fossils are preserved. With several intact skulls having been found, it can be determined that ''C.vulgaris' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buginbaatar
''Buginbaatar'' is an extinct genus of mammal from the Upper Cretaceous of Mongolia. It is a member of the extinct order Multituberculata, within the suborder Cimolodonta and family Cimolomyidae. It lived towards the end of the Mesozoic era. The genus ''Buginbaatar'' was named by Kielan-Jaworowska Z. and Sochava A.V. in 1969 based on the remains of a single species. Remains of this species, dubbed ''Buginbaatar clarki'', were found in Upper Cretaceous strata of the Nemegt Formation of Bügiyn Tsav in Mongolia. Based on the dimensions of its teeth, ''Buginbaatar'' was slightly larger than '' Valenopsalis'', which was estimated to weigh around , comparable to the extant '' Cynomys''. It is the only Cretaceous Mongolian multituberculate not to belong to the family Djadochtatherioidea. Remains are incomplete and the assignment of ''Buginbaatar'' to the Cimolomyidae is tentative, (Kielan-Jaworowska & Hurum 2001, p. 408). References * Kielan-Jaworowska & Sochava (1969), "The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zofia Kielan-Jaworowska
Zofia Emilia Kielan-Jaworowska (25 April 1925 – 13 March 2015) was a Polish paleobiologist. In the mid-1960s, she led a series of Polish-Mongolian paleontological expeditions to the Gobi Desert. She was the first woman to serve on the executive committee of the International Union of Geological Sciences. The most notable dinosaur species she discovered include: '' Deinocheirus'' and '' Gallimimus'' while '' Kielanodon'' and '' Zofiabaatar'' were named in her honour. In her obituary in ''Nature'', Richard L. Cifelli wrote that "Much of what we know about the origin and early evolution of mammals stems, directly or indirectly, from er work. Early life and education Zofia Kielan-Jaworowska was born in Sokołów Podlaski, Poland, on April 25, 1925. In 1928, her father, Franciszek Kielan, was offered a job for the Association of Agriculture and Trade Cooperatives in Warsaw, to which her family moved for five years. Zofia and family returned to Warsaw in 1934 and lived in Żol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suborder
Order () is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. An immediately higher rank, superorder, is sometimes added directly above order, with suborder directly beneath order. An order can also be defined as a group of related families. What does and does not belong to each order is determined by a taxonomist, as is whether a particular order should be recognized at all. Often there is no exact agreement, with different taxonomists each taking a different position. There are no hard rules that a taxonomist needs to follow in describing or recognizing an order. Some taxa are accepted almost universally, while others are recognized only rarely. The name of an order is usually written with a capital letter. For some groups of organisms, their orders may follow consistent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
