The oldest elasmosaurs (Sauropterygia, Plesiosauria) from Antarctica, Santa Marta Formation (upper Coniacian? Santonian-upper Campanian) and Snow Hill Island Formation (upper Campanian-lower Maastrichtian), James Ross Island

被引：26
|
作者：
O'Gorman, Jose P. [1 ,2 ]
机构：
[1] Univ Nacl La Plata, Div Paleontol Vertebrados, Museo La Plata, La Plata, Buenos Aires, Argentina
[2] Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina
来源：
POLAR RESEARCH | 2012年 / 31卷
关键词：
Elasmosauridae; Antarctica; Late Cretaceous; REPTILIA; STRATIGRAPHY; LAKUMASAURUS; MAUISAURUS; SQUAMATA; BASIN;
D O I：
10.3402/polar.v31i0.11090
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
Elasmosaurs are recorded for the first time in the Lachman Crags Member (Beta Member) of the Santa Marta Formation (lower Campanian) and in the Herbert Sound Member of the Snow Hill Island Formation (upper Campanian). These are the first elasmosaurids from James Ross Island, Antarctic Peninsula. These records greatly improve our knowledge of the taxonomic diversity of plesiosaurs of the Santa Marta Formation and Herbert Sound Member of the Snow Hill Island Formation, and extend the lower limit of the record of Elasmosauridae in Antarctica to the lower Campanian, making this the oldest record of an Antarctic elasmosaur.
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页数：10
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