| 词条 | Auca Mahuevo |
| 释义 |
DescriptionAt Auca Mahuevo dinosaur eggs containing identifiable embryonic remains have been the most spectacular discoveries. The eggs retain casts of the membrana testacea, the internal membrane that adheres to the shell, familiar to anyone who has peeled a hard-boiled egg. The context revealed a vast rookery of excavated nest structures that can be compared to living egg-layers such as turtles, crocodilians and birds. Even their spacing within the nesting locality (two to three meters apart) can be assessed. Reconstruction of nesting strategies suggest that shallow pits with rims were excavated and plant material incorporated in the surface. The Auca Mahuevo lagerstätte was discovered during two expeditions, in 1997 and 1999, by Luis Chiappe, Lowell Dingus, and Rodolfo Coria, who were looking for fossilized birds.[2] The site is now officially protected, but looted eggs are coming onto the market.{{citation needed|date=April 2016}} See also{{portal|Argentina|Cretaceous|Dinosaurs|Paleontology|Prehistory of South America}}
References1. ^Chiappe & Coria, 2004, p.591 2. ^Coria, R.A. and Chiappe, L.M. - 2007 - Embryonic Skin From Late Cretaceous Sauropods (Dinosauria) of Auca Mahuevo, Patagonia, Argentina {{webarchive|url=https://web.archive.org/web/20100105182734/http://jpaleontol.geoscienceworld.org/cgi/content/abstract/81/6/1528 |date=2010-01-05 }} Journal of Paleontology v81(6):1528-1532 {{doi|10.1666/05-150.1}} Bibliography
External links
7 : Dinosaur trace fossils|Cretaceous Argentina|Geology of Neuquén Province|Lagerstätten|Cretaceous paleontological sites of South America|Paleontological sites of Argentina|Anacleto Formation |
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