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Leptocleididae : ウィキペディア英語版 | Leptocleididae
Leptocleididae is a family of small-sized plesiosaurs that lived during the Early Cretaceous period (early Berriasian to early Albian stage).〔 ''Leptocleidus'' and ''Umoonasaurus'' had round bodies and triangle shaped heads. Hilary F. Ketchum and Roger B. J. Benson (2010), transferred ''Brancasaurus'', ''Kaiwhekea'', ''Nichollssaura'' and ''Thililua'' to this family. However, Ketchum and Benson (2011) reassigned ''Kaiwhekea'' and ''Thililua'' to their original positions, as an elasmosaurid and a polycotylid, respectively. ==Phylogeny==
}} }} }} }} Cladogram based on Ketchum and Benson (2011):〔 }} }} }}
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Leptocleididae」の詳細全文を読む
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