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Anchisauria
Sauropodiformes is an extinct clade of sauropodomorph dinosaurs that includes the animals more closely-related to Sauropoda than prosauropods like ''Massospondylus'' and '' Plateosaurus''. It was named in 2007 by Paul Sereno. Below is a cladogram of basal sauropodomorpha after Apaldetti and colleagues, 2021. Anchisauria is a smaller clade within Sauropodiformes. The name Anchisauria was first used Haekel and defined by Galton and Upchurch in the second edition of ''The Dinosauria''. It is a node-based taxon containing the most recent common ancestor of '' Anchisaurus polyzelus'' and '' Melanorosaurus readi'', and all its descendants. Galton and Upchurch assigned a family of dinosaurs to the Anchisauria: the Melanorosauridae. The more common prosauropods '' Plateosaurus'' and ''Massospondylus'' were placed in the sister clade Plateosauria. However, research has since indicated that ''Anchisaurus'' is closer to sauropod Sauropoda (), whose members are known as sauropods (; ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leonerasaurus
''Leonerasaurus'' is a basal (phylogenetics), basal genus of Sauropodomorpha, sauropodomorph dinosaur. Currently, there is only one species known, named ''L. taquetrensis'' by Diego Pol, Alberto Garrido and Ignacio A. Cerda in 2011 in paleontology, 2011. The fossil, an incomplete Juvenile (organism), subadult individual, was found in the Las Leoneras Formation in Argentina. This formation is probably Early Jurassic in age. ''Leonerasaurus'' was a small non-sauropod sauropodomorph, showing an unusual combination of basal and derived characters. This indicates that the evolution of early sauropodomorphs witnessed a great degree of convergent evolution. Discovery The fossils assigned to ''Leonerasaurus'' were found near Cañadón Las Leoneras (an affluent of the left margin of the Chubut river), southeast of Sierra de Taquetrén, Chubut Province, Central Patagonia, Argentina. This formation is probably early Jurassic in age, interpreted as Pliensbachian to Toarcian or late Sine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
