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・ Trionfo
・ Trionfo di Afrodite
・ Triongo
・ Trionic
・ Trionic 8
・ Trionic T5.2
・ Trionic T5.5
・ Trionto
・ Trionychia
・ Trionychidae
・ Trionychinae
・ Trionyx
・ Trionyx ikoviensis
・ Trionyx javanicus
・ Trionyx kansaiensis
Trionyx messelianus
・ Triopas
・ Triopha
・ Triopha catalinae
・ Triopha maculata
・ Triopoly
・ Triopoly (board game)
・ Triops
・ Triops australiensis
・ Triops cancriformis
・ Triops granarius
・ Triops longicaudatus
・ Triops newberryi
・ Triora
・ Trioracodon


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Trionyx messelianus : ウィキペディア英語版
Trionyx messelianus

''Trionyx messelianus'' is an extinct species of softshell turtle belonging to the family Trionychidae. These turtles lived in the Middle Eocene. Whether the various specimen found at the Messel Pit Fossil Site can be classified within the genus Trionyx is uncertain. Some authors believe that ''Trionyx messelianus'' from Messel should be considered synonym of ''Rafetoides austriacus'' (Peters, 1858), see Karl (1998).
==Description==
Trionyx messelianus is a three-clawed soft-shell turtle that can reach a length of about two feet. It is the largest species of turtles of Messel Pit Fossil Site. The carapace and plastron are not connected by bony prominences and the plastron shows bony plates reduced to small protrusions.

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