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・ Tanyochraethes tildeni
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Tanystropheidae
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Tanystropheidae : ウィキペディア英語版
Tanystropheidae

Tanystropheidae is an extinct family of mostly marine archosauromorph reptiles that lived throughout the Triassic Period. They are characterized by their long, stiff necks formed from elongated cervical vertebrae with very long cervical ribs. Some tanystropheids such as ''Tanystropheus'' had necks that were several meters long, longer than the rest of their bodies.
Tanystropheids are known from Europe, Asia (Russia, China, and Saudi Arabia), and North America. The presence of tanystropheids in Europe and China indicate that they lived along much of the coastline of the Tethys Ocean. However, species in western North America are found in terrestrial deposits, suggesting that as a group, tanystropheids were ecologically diverse.〔
Relationships among tanystropheid species have been difficult to resolve because most specimens were flattened during fossilization and are preserved two-dimensionally. Three-dimensional fossils are known from Europe and North America.〔
==References==



抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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