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Morganucodont
Morganucodonta (" Glamorgan teeth") is an extinct order of basal Mammaliaformes, a group including crown-group mammals (Mammalia) and their close relatives. Their remains have been found in Southern Africa, Western Europe, North America, India and China. The morganucodontans were probably insectivorous and nocturnal, though like eutriconodonts some species attained large sizes and were carnivorous. Nocturnality is believed to have evolved in the earliest mammals in the Triassic (called the nocturnal bottleneck) as a specialisation that allowed them to exploit a safer, night-time niche, while most larger predators were likely to have been active during the day (though some dinosaurs, for example, were nocturnal as well). Anatomy and biology Morganucodontans had a double jaw articulation made up of the dentary-squamosal joint as well as a quadrate-articular one. This implies that they also retained one of their postdentary bones: the articular. There is a trough at the back o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Storchodon
''Storchodon'' is an extinct genus of morganucodont mammaliaforms from the Late Jurassic (Kimmeridgian) of Germany. Its only species is ''Storchodon cingulatus'', which is known exclusively from a single upper molar found at the Süntel Formation of Lower Saxony. Etymology The generic name ''Storchodon'' honours the German palaeontologist Gerhard Storch, whereas the specific epithet ''cingulatus'' is a reference to the prominent cingulum of the molar. Description ''Storchodon'' was large for a morganucodont; the holotype molar has a length of , which among morganucodonts is exceeded only by the holotype of '' Paceyodon davidi''. This large size may be a case of insular gigantism. As in other morganucodonts, the molar has a triconodont shape, with the three main cusps A, B and C being set in a straight line. Cusp D is relatively large, and unlike in for example ''Morganucodon ''Morganucodon'' (" Glamorgan tooth") is an early mammaliaform genus that lived from the Late T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paceyodon
''Paceyodon'' is an extinct genus of morganucodontan from Early Jurassic deposits of southern Wales, United Kingdom. ''Paceyodon'' is known from an isolated molariform that is significantly larger than any morganucodontan molariform yet discovered. It was collected in the Pant Quarry, Vale of Glamorgan. It was first named by William A. Clemens in 2011 and the type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen( ... is ''Paceyodon davidi''. References Morganucodonts Hettangian life Jurassic synapsids of Europe Jurassic Wales Fossils of Wales Fossil taxa described in 2011 Taxa named by William A. Clemens Jr. Prehistoric cynodont genera {{paleo-therapsid-stub Paleontology in Wales ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morganucodon
''Morganucodon'' (" Glamorgan tooth") is an early mammaliaform genus that lived from the Late Triassic to the Middle Jurassic. It first appeared about 205 million years ago. Unlike many other early mammaliaforms, ''Morganucodon'' is well represented by abundant and well preserved (though in the vast majority of cases disarticulated) material. Most of this comes from Glamorgan in Wales (''Morganucodon watsoni''), but fossils have also been found in Yunnan Province in China (''Morganucodon oehleri'') and various parts of Europe and North America. Some closely related animals ('' Megazostrodon'') are known from exquisite fossils from South Africa. The name comes from a Latinization of ''Morganuc'', the name for South Glamorgan in the Domesday Book, the county of Wales where it was discovered by Walter Georg Kühne,Walter G. Kühne, "On a Triconodont tooth of a new pattern from a Fissure-filling in South Glamorgan", ''Proceedings of the Zoological Society of London'', volume 119 ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridetherium
''Bridetherium'' is an extinct genus of morganucodontan from Early Jurassic deposits of southern Wales, United Kingdom. ''Bridetherium'' is known from some isolated upper and lower molariform. It was collected in the Pant Quarry, Vale of Glamorgan. It was first named by William A. Clemens in 2011 and the type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen( ... is ''Bridetherium dorisae''. The species name is in honour of early mammal paleontologist Doris Mary Kermack. References Morganucodonts Hettangian life Jurassic synapsids of Europe Jurassic France Fossils of France Fossil taxa described in 2011 Taxa named by William A. Clemens Jr. Prehistoric cynodont genera {{paleo-therapsid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammaliaformes
Mammaliaformes ("mammalian forms") is a clade that contains the crown group mammals and their closest extinct relatives; the group radiated from earlier probainognathian cynodonts. It is defined as the clade originating from the most recent common ancestor of Morganucodonta and the crown group mammals; the latter is the clade originating with the most recent common ancestor of extant Monotremata, Marsupialia, and Placentalia. Besides Morganucodonta and the crown group mammals, Mammaliaformes includes Docodonta and ''Hadrocodium'' as well as the Triassic ''Tikitherium'', the earliest known member of the group. Mammaliaformes is a term of phylogenetic nomenclature. In contrast, the assignment of organisms to Mammalia has traditionally been founded on traits and, on this basis, Mammalia is slightly more inclusive than Mammaliaformes. In particular, trait-based taxonomy generally includes ''Adelobasileus'' and ''Sinoconodon'' in Mammalia, though they fall outside the Mammaliaformes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eozostrodon
''Eozostrodon'' is an extinct morganucodont mammaliaform. It lived during the Rhaetian stage of the Late Triassic. ''Eozostrodon'' is known from disarticulated bones from Wales and South West England and estimated to have been less than in head-body length, slightly smaller than the similar-proportioned ''Megazostrodon''. ''Eozostrodon'' was described on the basis of two teeth discovered in a quarry near Frome in Somerset, England, each originally assigned to separate species ''E. parvus'' and ''E. problematicus''. The latter was synonymized in 1971. The identity of and status of ''Eozostrodon'' is controversial. Kühne considered ''Eozostrodon'' to be "one and the same" with ''Morganucodon'' which he described, albeit after the published description of ''Eozostrodon'', claiming "...for a number of good reasons ''Morganucodon'' ought to be used, the name of ''Eozostrodon'' being used for sentimental reasons only or because of ignorance." Jenkins and Crompton in 1979 argued ''Mor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wareolestes
''Wareolestes rex'' ("Ware's Brigand king") is a mammaliaform from the Middle Jurassic (Bathonian) rocks of England and Scotland. It was originally known from isolated teeth from England, before a more complete jaw with teeth was found in the Kilmaluag Formation of Skye, Scotland. Etymology ''Wareolestes rex'' was named by Eric Freeman, who named it for Dr. Martin Ware "in recognition of this major contribution" to Freeman's successful work. The second part of the generic name, ''lestes'', comes from the Greek for ''brigand''. The species name ''rex'', Latin for ''king'', is both in recognition of the relatively large size of this Mesozoic mammaliaform, and a pun on the name of Mr E. J. King. Discovery ''Wareolestes rex'' was first found in and named from the Forest Marble Formation of Kirtlington, Oxfordshire, England. The holotype is a single molar tooth, originally described as a lower molar, but later argued to be an upper molar.Hahn G., Sigogneau-Russell D. and Gogefroit P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dinnetherium
''Dinnetherium'' is an extinct genus of morganucodont mammaliaform that is part of the monotypic order Dinnetheria and is also part of the monotypic family Dinnetheriidae.A. O. Averianov and A. V. Lopatin. 2011. Phylogeny of Triconodonts and Symmetrodonts and the Origin of Extant Mammals. Doklady Biological Sciences 436:32-35 The type species, ''D. nezorum'', was named in 1983. It was discovered in a Sinemurian layer of the Kayenta Formation,Sues H.-D., Clark J. M., et al (1994) A review of the Early Jurassic tetrapods from the Glen Canyon Group of the American Southwest., In the Shadow of the Dinosaurs: Early Mesozoic Tetrapods, N. C. Fraser and H.-D. Sues (eds.), Cambridge University Press, 284-294 within the Gold Spring Quarry 1, in Arizona. The holotype A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rosierodon
''Rosierodon'' is an extinct genus of morganucodont mammaliaforms from the Late Triassic of France. It contains a single species, ''Rosierodon anceps'', which was named in 2015 based on several isolated lower molariforms discovered in Saint-Nicolas-de-Port Saint-Nicolas-de-Port () is a commune in the Meurthe-et-Moselle ''département'' in north-eastern France. The town's basilica, '' Saint Nicolas'', is a pilgrimage site, supposedly holding relics of Saint Nicholas brought from Italy. It is one of .... References Morganucodonts Prehistoric cynodont genera Rhaetian life Late Triassic synapsids of Europe Triassic France Fossils of France Fossil taxa described in 2015 {{Paleo-therapsid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Purbeckodon
''Purbeckodon'' is an extinct genus of mammaliaforms, possibly belonging to Morganucodonta, that is known from Early Cretaceous deposits of southeastern Dorset, England. It was collected in the Purbeck Limestone Group of Dorset. It was first named by Percy M. Butler, Denise Sigogneau-Russell and P. C. Ensom in 2011 and the type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen( ... is ''Purbeckodon batei''. References Morganucodonts Berriasian life Early Cretaceous animals of Europe Early Cretaceous synapsids Cretaceous England Fossils of England Fossil taxa described in 2011 History of Dorset Taxa named by Percy Butler Taxa named by Denise Sigogneau‐Russell Prehistoric cynodont genera {{paleo-therapsid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indotherium
''Indotherium'' is an extinct genus of mammaliaforms that lived in what is now India during the Early Jurassic. It contains one species, ''I. pranhitai'', which is known from two upper molar teeth found in the Kota Formation of Telangana Telangana (; , ) is a state in India situated on the south-central stretch of the Indian peninsula on the high Deccan Plateau. It is the eleventh-largest state and the twelfth-most populated state in India with a geographical area of and .... When it was first described, it was assigned to the paraphyletic group " Symmetrodonta", but later studies have reinterpreted it as a possible member of the family Morganucodontidae. References Morganucodonts Early Jurassic synapsids Jurassic synapsids of Asia Jurassic India Fossils of India Fossil taxa described in 1984 {{Jurassic-animal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hallautherium
''Hallautherium'' is an extinct genus of morganucodont mammaliaforms from the Late Triassic of Europe. The type species ''H. schalchi'' is known from the Klettgau Formation The Klettgau Formation is a geological formation in Switzerland. It is Late Triassic in age, covering most of the mid to late Norian, the Carnian, and into the Rhaetian, spanning a period of 26-30 million years. In addition, a molariform tooth referable to the genus has been found in Poland. References Morganucodonts Prehistoric cynodont genera[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
