|
Keichousaurus NT Small
''Keichousaurus'' (meaning " Kweichow lizard") is an extinct genus of pachypleurosaurian marine reptile from the Chialingchiang and Falang Formations of China with two known species attributed to the genus: ''K. hui'' and ''K. yuananensis''. ''Keichousaurus'' is among the most common sauropterygian fossils recovered and are often found as nearly complete, articulated skeletons, making them popular among collectors. ''Keichousaurus'', and the pachypleurosaur family broadly, are sometimes classified within Nothosauroidea, but are otherwise listed as a separate, more primitive lineage within Sauropterygia. Discovery and naming The holotype of ''K. hui'', was discovered in the Falang Formation of Guizhou Province, China in 1957 by Hu Chengzhi and was named by Young (1958).C.-C. Young. (1958). On the new Pachypleurosauroidea from Keichow, south-west China. ''Vertebrata PalAsiatica'' 2(2-3):72-81 The second species, ''K. yuananensis'', was discovered in the Chialingchiang F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Triassic
The Early Triassic is the first of three epochs of the Triassic Period of the geologic timescale. It spans the time between 251.9 Ma and Ma (million years ago). Rocks from this epoch are collectively known as the Lower Triassic Series, which is a unit in chronostratigraphy. The Early Triassic is the oldest epoch of the Mesozoic Era. It is preceded by the Lopingian Epoch (late Permian, Paleozoic Era) and followed by the Middle Triassic Epoch. The Early Triassic is divided into the Induan and Olenekian ages. The Induan is subdivided into the Griesbachian and Dienerian subages and the Olenekian is subdivided into the Smithian and Spathian subages. The Lower Triassic series is coeval with the Scythian Stage, which is today not included in the official timescales but can be found in older literature. In Europe, most of the Lower Triassic is composed of Buntsandstein, a lithostratigraphic unit of continental red beds. The Early Triassic and partly also the Middle Trias ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
