Thaichelys
''Thaichelys'' (meaning "Thai turtle") is a genus of extinct Proterochersidae, proterochersid stem-turtle from the Late Triassic Huai Hin Lat Formation of Thailand. The type species is ''T. ruchae'' and it was initially classified as a species of ''Proganochelys''. Discovery and naming The first discovered remains referable to ''Thaichelys'' were discovered in 1980 along the road from Ban Huai Sanan Sai to Na Pha Song. The remains were initially described as Turtle, Testudines indet. by de Lapparent de Broin et al. (1982) before being referred to "''Proganochelys''" ''ruchae'' (now ''Thaichelys ruchae'') in 1984. The specimens have since become lost, but casts exist of all but one of the specimens in the National Museum of Natural History, France, French National Museum of Natural History. In 1981, three more specimens were discovered: SM2015-1-001 (the holotype) and SM2017-1-124–SM2017-1-136. They were recovered from the exposed surface limestones of the Huai Hin Lat Format ...
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