کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4746671 1642060 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dentaries of a caenagnathid (Dinosauria: Theropoda) from the Nemegt Formation of the Gobi Desert in Mongolia
ترجمه فارسی عنوان
Dentaries یک caenagnathid (Dinosauria: ددپایان) از سازند Nemegt از صحرای گبی در مغولستان
کلمات کلیدی
دایناسوریا؛ Theropoda؛ Caenagnathidae؛ Oviraptorosauria؛ کرتاسه بالایی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فسیل شناسی
چکیده انگلیسی


• A symphyseal region of the fused dentaries of a caenagnathid theropod is reported from the Nemegt Formation in Mongolia.
• This represents the first caenagnathid dentaries found from the upper Campanian to Maastrichtian in Asia, in which caenagnathids have rarely been described.
• The Nemegt Formation is unique for its diverse oviraptorosaurian fauna including both oviraptorids and caenagnathids. Hypothesized coexistence of eolian and fluvial environments during the deposition of this formation might explain such co-occurrence of the two clades of oviraptorosaurians.

A symphyseal region of the fused dentaries of a caenagnathid theropod is described from the Upper Cretaceous Nemegt Formation at the Bugin Tsav locality in the Mongolian Gobi Desert. In contrast to the high diversity of Caenagnathidae in the upper Campanian to Maastrichtian in North America, only specimens of a single caenagnathid, Elmisaurus raurus, have been reported in the coeval strata in Asia. Although dentaries are commonly-found bones in the fossil record of Caenagnathidae, the present specimen is the first discovery of caenagnathid dentaries from the upper Campanian to Maastrichtian in Asia. The Nemegt Formation is unique for its diverse oviraptorosaurian fauna that includes both Caenagnathidae and Oviraptoridae as well as the non-caenagnathoid Avimimus portentosus. Hypothesized coexistence of eolian and fluvial environments in the Gobi Basin during the deposition of the Nemegt Formation might explain such co-occurrence of Caenagnathidae and Oviraptoridae.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cretaceous Research - Volume 63, August 2016, Pages 148–153
نویسندگان
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