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Jiangxititan
''Jiangxititan'' is an extinct genus of somphospondylan titanosauriform dinosaur from the Late Cretaceous Nanxiong Formation of China. The genus contains a single species, ''J. ganzhouensis'', known from several articulated vertebrae with ribs. Originally described as a titanosaur, ''Jiangxititan'' was later suggested to be a non-titanosaurian somphospondylan. Discovery and naming The ''Jiangxititan'' holotype specimen, NHMG 034062, was discovered in sediments of the Nanxiong Formation near Tankou Town in Ganzhou City of Jiangxi Province, southern China. The specimen consists of the three posteriormost cervical vertebrae with two cervical ribs, articulated with the first four dorsal vertebrae with three dorsal ribs. In 2023, Mo ''et al''. described ''Jiangxititan ganzhouensis'' as a new genus and species of macronarian sauropod based on these fossil remains. The generic name, "''Jiangxititan''", combines a reference to the type locality in Jiangxi Province with the word "t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mongolosaurus
''Mongolosaurus'' is a genus of titanosauriform sauropod dinosaur which lived during the Early Cretaceous of China. Discovery and systematics In 1928 a team from the American Museum of Natural History, headed by Roy Chapman Andrews, at On Gong Gol near Hukongwulong in Inner Mongolia, in ''Quarry 714'' discovered a sauropod tooth. In 1933 Charles W. Gilmore, based on this fossil, named and described the type species ''Mongolosaurus haplodon''. The generic name refers to Mongolia. The specific name is derived from Greek ''haploos'', "single", and ''odon'', "tooth". The holotype, AMNH 6710, was found in the Early Cretaceous (Aptian-Albian) On Gong Formation. It consists of teeth, a basioccipital from the back of the skull and parts of the first three cervical vertebrae. Classification ''Mongolosaurus'' was previously assigned to Diplodocidae, Titanosauridae and Euhelopodidae, though recent studies find it to be either a basal titanosaur or a non-titanosaurian somphospondylan. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nanxiong Formation
The Nanxiong Formation (also known as Yuanpu Formation) is a Late Cretaceous geologic Formation (geology), formation in Guangdong Province. Dinosaur remains are among the fossils that have been recovered from the formation. Description It consists of continental siliciclastic red beds, with fauna which similar to that of the Nemegt Formation. It has been dated to about 66.7 ± 0.3 million years ago. It is the lowest unit of the Nanxiong Basin, a small graben created during Mesozoic rifting. Buck et al. state that it overlies Jurassic granite Basement (geology), basement, and is conformably overlain by the Shanghu Formation. Alternative stratigraphic schemes for the Nanxiong basin have been proposed, one of which refers to the Nanxiong succession as the Nanxiong Group, and dividing it into the Yuanpu, Zhutian and Zhenshui formations, and overlying the Albian to Turonian Changba Formation. The Depositional environment is made up of alluvial fan facies consisting of sheetflood dep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2023 In Archosaur Paleontology
This article records new taxa of every kind of fossil archosaur that were scheduled to be Binomial nomenclature, described during 2023, as well as other significant discoveries and events related to the paleontology of archosaurs that were published in 2023. Pseudosuchians New pseudosuchian taxa General pseudosuchian research * Evidence of the impact of the interplay of abiotic and biotic processes on the evolution of pseudosuchians is presented by Payne ''et al.'' (2023). * A study on the biomechanical properties of the skull of ''Riojasuchus, Riojasuchus tenuisceps'' is published by Taborda, Von Baczko & Desojo (2023), who propose that ''R. tenuisceps'' could have had a wading habit, feeding on small-sizey prey caught from the shoreline. * A study on the bone histology of ''Decuriasuchus, Decuriasuchus quartacolonia'' is published by Farias ''et al.'' (2023), who interpret their findings as indicative of early ontogenetic stage of known specimens, which might have stay ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lognkosauria
Lognkosauria is a clade of giant long-necked sauropod dinosaurs within the clade Titanosauria. It includes some of the largest and heaviest dinosaurs known. They lived in South America and likely Asia during the Late Cretaceous period. Description Lognkosaurians can be distinguished from other titanosaurs by the wide and unusually thick cervical rib loops on their neck vertebrae, the relatively narrow neural canal, and their huge vaulted neural arches. They also had very wide dorsal vertebrae with wing-like side processes, and extremely wide rib cages. Their dorsal side processes are also fairly in-line with the level of the neural canal. Skull material from ''Malawisaurus'', the sister taxon to Lognkosauria, indicates that lognkosaurians at least began with the big-nosed, rounded head shape of earlier titanosaurs and more basal macronarians. Classification Lognkosauria was defined as the clade encompassing the most recent common ancestor of '' Futalognkosaurus dukei'' and '' Me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
