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Dianmeisaurus Mutaensis
''Dianmeisaurus'' is an extinct genus of pachypleurosaur from the Middle Triassic Guanling Formation in China. The type species is ''D. gracilis''. An additional species, ''D. mutaensis'', was named in 2024 based on a small skeleton likely belonging to an immature individual. Classification In their 2024 description of ''Dianmeisaurus mutaensis'', Hu, Li & Liu recovered the two species of ''Dianmeisaurus'' as the sister taxon to '' Panzhousaurus'' in a clade of basally-branching pachypleurosaurs. In their analyses, they recovered the Pachypleurosauria as the sister taxon to the Nothosauroidea. The results of their phylogenetic analyses are shown in the cladogram A cladogram (from Greek language, Greek ''clados'' "branch" and ''gramma'' "character") is a diagram used in cladistics to show relations among organisms. A cladogram is not, however, an Phylogenetic tree, evolutionary tree because it does not s ... below: References {{Taxonbar, from=Q109561670 Pachypleuros ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middle Triassic
In the geologic timescale, the Middle Triassic is the second of three epoch (geology), epochs of the Triassic period (geology), period or the middle of three series (stratigraphy), series in which the Triassic system (stratigraphy), system is divided in chronostratigraphy. The Middle Triassic spans the time between annum, Ma and Ma (million years ago). It is preceded by the Early Triassic Epoch and followed by the Late Triassic Epoch. The Middle Triassic is divided into the Anisian and Ladinian age (geology), ages or stage (stratigraphy), stages. Formerly the middle series in the Triassic was also known as Muschelkalk. This name is now only used for a specific unit of stratum, rock strata with approximately Middle Triassic age, found in western Europe. Middle Triassic life Following the Permian–Triassic extinction event, the most devastating of all mass-extinctions, life recovered slowly. In the Middle Triassic, many groups of organisms reached higher diversity again, s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hanosaurus
''Hanosaurus'' is an extinct genus of marine reptiles that existed during the Triassic period in what is now China. The type species is ''Hanosaurus hupehensis''. It was a small animal, with specimens measuring long in total body length, which likely fed on soft-bodied prey. Discovery ''Hanosaurus'' (lizard of Han River) was discovered from the Sonshugo locality of Hubei, China. It was found at the second member of the Jialingjiang Formation. The type specimen consisted of a skull, complete hindlimbs and pelvis, incomplete shoulder girdle represented by coracoid and clavicle, and an articulated but incomplete vertebral column. It was initially described as a thalattosaur but subsequent research showed it was more likely to be a sauropterygia. A more complete referred specimen was described in 2022 from the Yingzishan locality of Hubei, China. The specimen was also found at the second member of the Jialingjiang formation. It consisted of almost the entire skeleton preserved w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honghesaurus
''Honghesaurus'' is an extinct genus of pachypleurosaur from the Anisian-age Guanling Formation of China. The type specimen measures about in total body length. Classification The cladogram below follows Xu and colleagues (2022), when they used ''Youngina'' as a reference point for rooting the tree. Using a selection of placodont Placodonts (" tablet teeth") are an extinct order of marine reptiles that lived during the Triassic period, becoming extinct at the end of the period. They were part of Sauropterygia, the group that includes plesiosaurs. Placodonts were generall ...s resulted in a less resolved topology. References Triassic sauropterygians Pachypleurosauria Fossil taxa described in 2022 Anisian life {{triassic-reptile-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Qianxisaurus
''Qianxisaurus'' is an extinct genus of pachypleurosaur or alternatively a basal eosauropterygian known from the Middle Triassic (Ladinian age) of Guizhou Province, southwestern China. It contains a single species, ''Qianxisaurus chajiangensis''. Discovery ''Qianxisaurus'' is known solely from the holotype NMNS-KIKO-F044630, a nearly complete and articulated skeleton missing only the tip of the tail and the right hindlimb, housed at the National Museum of Natural Science in Taichung, Taiwan. The holotype is exposed mostly in a view from above, with the tail gradually turning to left side view. The skull measures at in length, and the total length of the individual is estimated to have been over . Only the first 31 tail vertebrae are preserved, out of at least 42-48 vertebrae that are expected to comprise the tail based on other closely related pachypleurosaurs, which implies a total body length longer than 80 cm for this individual. NMNS-KIKO-F044630 was discovered in 200 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prosantosaurus
''Prosantosaurus'' is a monotypic genus of pachypleurosaur, pachypleurosaurian sauropterygian containing the single species ''Prosantosaurus scheffoldi'' discovered in Grisons, Canton Grison of Switzerland. The genus is named after the Prosanto Formation near the Gletscher Ducan, Ducan mountains, where the skeletons were found, and the species for Beat Scheffold, a scientific illustrator from Zürich, Zurich who contributed prominently to the research of the Triassic marine reptiles. Discovery Six skeletons of the species have been discovered within Limestone, lime and Marl, marlstone sediments of the Upper Prosanto Formation in the Ducanfurgga southeast of Davos, Canton Grisons, at about 2700 m above sea level. They have been dated to the very early Ladinian of the Triassic period. Today, the Ducan mountains are located about northeast of Mount Monte San Giorgio, San Giorgio, a World Heritage Site, UNESCO world heritage site where other pachypleurosauria were found. In the pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neusticosaurus
''Neusticosaurus'' (sometimes misspelled ''Neuticosaurus'') ("swimming lizard"), is an extinct genus of marine reptile belonging to the pachypleurosaurs, from Italy, Switzerland and Germany. ''Neusticosaurus'' was one of the smallest nothosaurs and probably fed on small fish A fish (: fish or fishes) is an aquatic animal, aquatic, Anamniotes, anamniotic, gill-bearing vertebrate animal with swimming fish fin, fins and craniate, a hard skull, but lacking limb (anatomy), limbs with digit (anatomy), digits. Fish can .... The type specimen is held at the Natural History Museum UK (NHMUK PV R53). References *Seeley, H.G. (1882). On ''Neusticosaurus pusillus'' (Fraas), an amphibious reptile having affinities with the terrestrial Nothosauria and with the marine Plesiosauria. Quarterly Journal of the Geological Society of London 38:350–366. Nothosaurs Triassic sauropterygians Middle Triassic reptiles of Europe Taxa named by Harry Seeley Fossil taxa described in 18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Serpianosaurus
''Serpianosaurus'' (meaning "Serpiano lizard") is an extinct genus of pachypleurosaurs known from the Middle Triassic (late Anisian and early Ladinian stages) deposits of Switzerland and Germany. It was a small reptile, with the type specimen of ''S. mirigiolensis'' measuring long. Fossils of the type species, ''Serpianosaurus mirigiolensis, S. mirigiolensis'', have been found from the middle Grenzbitumenzone, the oldest strata of Monte San Giorgio in Switzerland, an area well known for its abundant pachypleurosaur remains. The locality dates back to sometime around the Anisian/Ladinian boundary of the Middle Triassic, around 242 anum, Ma, with ''Serpianosaurus'' most likely occurring strictly during the latest Anisian. This makes it one of the oldest sauropterygians from Monte San Giorgio, with only the rare pachypleurosaur ''Odoiporosaurus'' being older. Certain aspects of its morphology also suggest it is one of the most basal forms. In 2013 in paleontology, 2013, Cajus G. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dactylosaurus
''Dactylosaurus'' is a genus of nothosaur in the family Pachypleurosauridae. Along with '' Anarosaurus'', ''Dactylosaurus'' was one of the earliest known pachypleurosaurs to come from Europe.Lepidosauromorpha: Pachypleurosauridae: Dactylosaurus & Anarosaurus Palaeos.com. Last accessed 2008-07-04. Etymology ''Dactylosaurus'' comes from the ' (), "" and ' (), meaning "" or ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anarosaurus
''Anarosaurus'' is an extinct genus of pachypleurosaurs that lived in the Middle Triassic period (Anisian) and has been found in the Jena Formation and the Karlstadt Formation of Germany and the Winterswijk Quarry ( Lower Muschelkalk) of The Netherlands. Two species are known: ''A. pumilio'' (the type species) and ''A. heterodontus''. The holotype of ''A. pumilio'' was originally housed at the Institut und Museum fur Geologie und Palaontologie, Georg-August-Universitat, Gottingen, but can no longer be located today because it was lost or destroyed during World War II. ''Anarosaurus'' was a small reptile with an estimated body length of . See also * List of plesiosaurs This list of plesiosaurs is a comprehensive listing of all Genus, genera that have ever been included in the order Plesiosauria, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now conside ... References Triassic sauropterygians Extinct animal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odoiporosaurus
''Odoiporosaurus'' is an extinct genus of pachypleurosaur known from the Middle Triassic (middle Anisian stage) Besano Formation (Grenzbitumenzone) of northern Italy. It contains a single species, ''Odoiporosaurus teruzzii''. ''Odoiporosaurus'' is the sister taxon of the group formed by '' Serpianosaurus'' and ''Neusticosaurus'', and together with the older and more primitive ''Dactylosaurus'' plus ''Anarosaurus'' clade, they form a monophyletic In biological cladistics for the classification of organisms, monophyly is the condition of a taxonomic grouping being a clade – that is, a grouping of organisms which meets these criteria: # the grouping contains its own most recent co ... group of European pachypleurosaurids. References Triassic sauropterygians Fossil taxa described in 2014 Fossils of Italy Anisian life Sauropterygian genera {{triassic-reptile-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diandongosaurus
''Diandongosaurus'' is an extinct genus of eosauropterygian known from the lower Middle Triassic (Anisian age) of Yunnan Province, southwestern China. It is known from the holotype IVPP V 17761, a complete and articulated skeleton with skull, which was found in the middle Triassic Lagerstätte of the Guanling Formation. It was first named by Qing-Hua Shang, Xiao-Chun Wu, Chun Li in 2011 The year marked the start of a Arab Spring, series of protests and revolutions throughout the Arab world advocating for democracy, reform, and economic recovery, later leading to the depositions of world leaders in Tunisia, Egypt, and Yemen ... and the type species is ''Diandongosaurus acutidentatus''. A referred specimen suggests a total body length of . References Fossil taxa described in 2011 Sauropterygian genera Triassic sauropterygians Fossils of China Anisian life Guanling Formation {{triassic-reptile-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keichousaurus
''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 Fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
