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Wamweracaudia
''Wamweracaudia'' is a large herbivorous sauropod dinosaur from the Late Jurassic Tendaguru Formation of Tanzania, Africa, 155-145 million years ago. Discovery and naming During the German expeditions to the Tendaguru in German East Africa between 1909 and 1912, paleontologist Werner Janensch supervised the excavation of a sauropod tail at "Site G". In 1929, he referred this tail to ''Gigantosaurus robustus''.Janensch, W. 1929. "Material und Formengehalt in der Ausbeute der Tendaguru-Expedition", ''Palaeontographica'', Supplement 7, 1. Reihe, Teil 2: 1-34 In 1991, ''G. robustus'' was made the separate genus ''Janenschia''.Wild, R. 1991. "''Janenschia'' n. g. ''robusta'' (E. Fraas 1908) pro ''Tornieria robusta'' (E. Fraas 1908) (Reptilia, Saurischia, Sauropodomorpha). ''Stuttgarter Beiträge zur Naturkunde, Serie B (Geologie und Paläontologie)'' 173: 1–4 Janensch had referred the tail based on personal observation of a series of finds of comparable material. During the Second W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mamenchisauridae
Mamenchisauridae is a family of sauropod dinosaurs belonging to Eusauropoda known from the Jurassic and Early Cretaceous of Asia and Africa. Some members of the group reached gigantic sizes, amongst the largest of all sauropods. Classification The family Mamenchisauridae was first erected by Chinese paleontologists Yang Zhongjian ("C.C. Young") and Zhao Xijin in 1972, in a paper describing '' Mamenchisaurus hochuanensis''.Young, C.C. and Zhao, X. (1972). "''Mamenchisaurus hochuanensis sp. nov.''". ''Institute of Vertebrate Palaeontology and Palaeoanthropology Monographs'' Series A 8: 1-30. The most complete cladogram of Mamenchisauridae is presented by Moore ''et al.'', 2020, which includes several named species. Notably, some iterations of their analysis recover ''Euhelopus'' and kin, usually considered somphospondylians, as relatives of mamenchisaurids, mirroring earlier conceptions about the family. Topology A: Implied-weights analysis, Gonzàlez Riga dataset Topology B: Ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mamenchisaurids
Mamenchisauridae is a family of sauropod dinosaurs belonging to Eusauropoda known from the Jurassic and Early Cretaceous of Asia and Africa. Some members of the group reached gigantic sizes, amongst the largest of all sauropods. Classification The family Mamenchisauridae was first erected by Chinese paleontologists Yang Zhongjian ("C.C. Young") and Zhao Xijin in 1972, in a paper describing '' Mamenchisaurus hochuanensis''.Young, C.C. and Zhao, X. (1972). "''Mamenchisaurus hochuanensis sp. nov.''". ''Institute of Vertebrate Palaeontology and Palaeoanthropology Monographs'' Series A 8: 1-30. The most complete cladogram of Mamenchisauridae is presented by Moore ''et al.'', 2020, which includes several named species. Notably, some iterations of their analysis recover ''Euhelopus'' and kin, usually considered somphospondylians, as relatives of mamenchisaurids, mirroring earlier conceptions about the family. Topology A: Implied-weights analysis, Gonzàlez Riga dataset Topology B: Ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tendaguru Formation
The Tendaguru Formation, or Tendaguru Beds are a highly fossiliferous formation and Lagerstätte located in the Lindi Region of southeastern Tanzania. The formation represents the oldest sedimentary unit of the Mandawa Basin, overlying Neoproterozoic basement, separating by a long hiatus and unconformity. The formation reaches a total sedimentary thickness of more than . The formation ranges in age from the late Middle Jurassic to the Early Cretaceous, Oxfordian to Hauterivian stages, with the base of the formation possibly extending into the Callovian. The Tendaguru Formation is subdivided into six members; from oldest to youngest Lower Dinosaur Member, the ''Nerinella'' Member, the Middle Dinosaur Member, ''Indotrigonia africana'' Member, the Upper Dinosaur Member, and the ''Rutitrigonia bornhardti-schwarzi'' Member. The succession comprises a sequence of sandstones, shales, siltstones, conglomerates with minor oolitic limestones, deposited in an overall shallow marine to c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2019 In Archosaur Paleontology
This article records new taxa of fossil archosaurs of every kind that are scheduled described during the year 2019, as well as other significant discoveries and events related to paleontology of archosaurs that are scheduled to occur in the year 2019. General research * A study on patterns of evolutionary integration among regions of the archosaur skull, based on data from extant and fossil taxa, is published by Felice ''et al.'' (2019). * A review of the biogeographic history of crocodyliforms, sauropod dinosaurs, nonavian theropod dinosaurs and mammals from the Mesozoic of Gondwana is published by Krause ''et al.'' (2019). * A study on the biogeography of Cretaceous terrestrial tetrapods, including terrestrial crocodyliforms, non-avian dinosaurs, birds and pterosaurs, is published by Kubo (2019). * A study on size and shape differences between brains and endocasts of extant American alligator and domestic chicken, and on its implications for inferring whether endocasts are a rel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
