DOI: 10.1016/j.palaeo.2012.12.004
论文题名: Dinosaur eggshell and tooth enamel geochemistry as an indicator of Mongolian Late Cretaceous paleoenvironments
作者: Montanari S. ; Higgins P. ; Norell M.A.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2013
卷: 370 起始页码: 158
结束页码: 166
语种: 英语
英文关键词: Cretaceous
; Dinosaurs
; Eggshells
; Mongolia
; Paleoecology
; Stable isotopes
英文摘要: The Late Cretaceous fossiliferous beds of Mongolia's Gobi Desert have yielded spectacular articulated remains of a remarkable diversity of fossil mammals, lizards, turtles, birds, and non-avian dinosaurs. Paleoenvironmental interpretations of the deposits at these localities have ranged from arid wind-blown dune fields to more mesic, moist environments. Among the diversity of fossils, dinosaur eggshells and teeth are commonly found at these localities. Dinosaur eggs, like modern avian eggs, are constructed of biomineralized calcite (CaCO3) and proteins, allowing carbon and oxygen stable isotopes to be quantified to provide information about the environment in which the egg-laying animals were living. Here it is shown that dinosaur eggshell and teeth from the Djadokhta and Nemegt Formations have not been significantly altered and reflect an environment of dry dunes during deposition of the Djadokhta Formation and a more mesic stream environment for conditions in the Nemegt Formation. Carbonate nodules from the same eggshell-bearing layers also independently reflect a similar environmental signal. This study represents the first geochemical analysis of dinosaur remains from the Cretaceous of Mongolia and illustrates the potential of utilizing dinosaur fossil geochemistry of both eggs and teeth to reconstruct Mesozoic environments. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69872
Appears in Collections: 过去全球变化的重建
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作者单位: American Museum of Natural History, Richard Gilder Graduate School, Central Park West at 79th Street, New York, NY 10024, United States; Department of Earth and Environmental Sciences, University of Rochester, 227 Hutchison Hall, Rochester, NY 14627, United States
Recommended Citation:
Montanari S.,Higgins P.,Norell M.A.. Dinosaur eggshell and tooth enamel geochemistry as an indicator of Mongolian Late Cretaceous paleoenvironments[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2013-01-01,370