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Coniasaurus : ウィキペディア英語版
Coniasaurus

''Coniasaurus'' is an extinct genus of Late Cretaceous marine squamates that range in age from Cenomanian to Santonian. It was first described by Richard Owens in 1850 from lower Cenomanian chalk deposits in southeast England. Two species have been described from this genus: ''C.crassidens'' (Owen, 1850), known from Cenomanian to Santonian deposits from southeast England, Germany and North America, and ''C.gracilodens'' (Caldwell, 1999) from the Cenomanian of southeast England.〔
''Coniasaurus'' has only been described from incomplete specimens, but it is known to have had a relatively elongate skull with specialised teeth.〔 By comparison with ''Dolichosaurus'' and other dolichosaurs, it may have had four short limbs and an elongate neck and body. A maximum length of about 0.5 m has been proposed.〔
Phylogenetic analysis suggests that ''Coniasaurus'' is a sister group to the Mosasauroidea within the Pythonomorpha clade.
==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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