کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4747418 1359909 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A Scincomorpha lizard from the Campanian of Patagonia
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فسیل شناسی
پیش نمایش صفحه اول مقاله
A Scincomorpha lizard from the Campanian of Patagonia
چکیده انگلیسی

The terrestrial lizard fossil record of Gondwana is very scarce. Few lizards, from mostly fragmentary fossils, have been identified in Madagascar, Tanzania, Morocco, South Africa, India and South America. Among the South American specimens there are basal Squamata forms (Olindalacerta and Tijubina) and a possible iguanid (Pristiguana) form Brazil. In Argentina gondwanian terrestrial lizards are represented by a putative iguanid and a small, poorly preserved dentary. This last specimen, recovered from the Anacleto Formation (Neuquén Group, Río Colorado Subgroup) in vicinity of the locality of Cinco Saltos (Río Negro Province), is here described formally. Comparisons with extant lizards indicate more affinity of the fossil with the Scincomorpha (non Scincophidia) than with any other group of lizards. This finding suggests that lizards were probably better represented and more diverse in the Mesozoic of South America than previously thought, although the fossil record is, at the moment, much poorer than in Laurasia.


► A fossil lizard (Squamata) dentary from the early Campanian of Argentina is described.
► The fossil presents affinities with the Scincomorpha.
► The fossil cannot be differentiated from Cordyliformes, Scelotidae nor Scincidae.
► This is the first Scincogekkonomorpha recovered in the Cretaceous of Argentina.
► This finding suggests that the South America Mesozoic lizard record is sub-evaluated.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cretaceous Research - Volume 32, Issue 6, December 2011, Pages 781–785
نویسندگان
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