Name: Chaohusaurus ‭(‬Chao Hu lizard‭)‬.
Phonetic: Chow-hu-sor-us.
Named By: C.‭ ‬C.‭ ‬Young‭ & ‬Z.‭ ‬Dong‭ ‬-‭ ‬1972.
Classification: Chordata,‭ ‬Reptilia,‭ ‬Ichthyosauromorpha,‭ ‬Ichthyosauriformes,‭ ‬Grippidia,‭ ‬Grippiidae
Species: C.‭ ‬geishanensis‭ (‬type‭)‬,‭ ‬C.‭ ‬brevifemoralis,‭ ‬C.‭ ‬zhangjiawanensis.
Diet: Piscivore.
Size: Adults up to about‭ ‬180‭ ‬centimetres long.
Known locations: China‭ ‬-‭ ‬Jialingjang Formation,‭ ‬Majianshan Limestone Formation
Time period: Olenekian to Anisian of the Triassic.
Fossil representation: Remains of several individuals.

       Chaohusaurus is a genus of ichthyosauromorph marine reptile that lived in sea waters around Asia during the early/mid Triassic.‭ ‬Chaohusaurus had a similar body plan to other primitive ichthyosaurs being more lizard-like than fish-like as seen in later ichthyosaurs.‭ ‬Still,‭ ‬the limbs of Chaohusaurus were adapted to form paddles,‭ ‬and the rear half of the tail dipped down slightly to form a paddle that was the primary form of forward locomotion.
       At least one known specimen of Chaohusaurus shows embryos of young developing inside the body of an adult,‭ ‬confirming that Chaohusaurus was viviparous and did not have to return to the land to lay eggs.‭ ‬Therefore it is likely that Chaohusaurus spent their entire lives in the sea,‭ ‬hunting for small aquatic organisms such as fish and squid.

Further reading
-‭ [‬On the Triassic aquatic reptiles of China‭]‬.‭ ‬-‭ ‬Memoirs of the Nanjing Institute of Geology and Paleontology.‭ ‬9:‭ ‬1‭–‬34.‭ ‬-‭ ‬C.‭ ‬C.‭ ‬Young‭ & ‬Z.‭ ‬Dong‭ ‬-‭ ‬1972.
-‭ ‬Observations on Triassic ichthyosaurs.‭ ‬Part VII.‭ ‬New data on the osteology of Chaohusaurus geishanensis YOUNG‭ & ‬DONG,‭ ‬1972‭ ‬from the Lower Triassic of Anhui‭ (‬China‭)‬.‭ ‬-‭ ‬Neues Jahrbuch für Geologie und Paläontologie,‭ ‬Abhandlungen.‭ ‬219:‭ ‬305‭–‬327.‭ ‬-‭ ‬M.‭ ‬W.‭ ‬Maisch‭ ‬-‭ ‬2001.‭
-‭ ‬A new Triassic primitive ichthyosaur from Yuanan,‭ ‬South China.‭ ‬-‭ ‬Acta Geologica Sinica‭ ‬87‭(‬3‭)‬:672-677.‭ ‬-‭ ‬X.‭ ‬Chen,‭ ‬P.‭ ‬M.‭ ‬Sander,‭ ‬L.‭ ‬Cheng‭ & ‬X.‭ ‬Wang‭ ‬-‭ ‬2013.
-‭ ‬The new ichthyosauriform Chaohusaurus brevifemoralis‭ (‬Reptilia,‭ ‬Ichthyosauromorpha‭) ‬from Majiashan,‭ ‬Chaohu,‭ ‬Anhui Province,‭ ‬China.‭ ‬-‭ ‬PeerJ‭ ‬7‭(‬e7561‭)‬.‭ ‬-‭ ‬J.‭ ‬Huang,‭ ‬R.‭ ‬Motani,‭ ‬D.‭ ‬Jiang,‭ ‬A.‭ ‬Tintori,‭ ‬O.‭ ‬Rieppel,‭ ‬M.‭ ‬Zhou,‭ ‬X.‭ ‬Ren‭ & ‬R.‭ ‬Zhang‭ ‬-‭ ‬2019.


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