Minute theropod eggs and embryo from the Lower Cretaceous of Thailand and the dinosaur-bird transition

被引：31

作者：

Buffetaut, E

Grellet-Tinner, G

Suteethorn, V

Cuny, G

Tong, HY

Kosir, A

Cavin, L

Chitsing, S

Griffiths, PJ

Tabouelle, J

Le Loeuff, J

机构：

[1] CNRS, UMR Paleoenvironm & Paleobiosphere 5125, F-75013 Paris, France

[2] Nat Hist Museum Los Angeles Cty, Dept Vertebrate Paleontol, Los Angeles, CA 90007 USA

[3] Univ So Calif, Dept Earth Sci, Los Angeles, CA 90089 USA

[4] Dept Mineral Resources, Bangkok 10400, Thailand

[5] Geol Museum, DK-1350 Copenhagen, Denmark

[6] ZRC SAZU, Inst Paleontol, Ljubljana 1000, Slovenia

[7] Musee Dinosaures, F-11260 Esperaza, France

[8] Natl Sci Ctr Educ, Bangkok 10110, Thailand

[9] Wolverhampton Univ, Sch Appl Sci, Wolverhampton WV1 1SB, England

[10] Musee Municipal, F-76500 Elbeuf Sur Seine, France

来源：

NATURWISSENSCHAFTEN | 2005年 / 92卷 / 10期

关键词：

D O I：

10.1007/s00114-005-0022-9

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We report on very small fossil eggs from the Lower Cretaceous of Thailand, one of them containing a theropod embryo, which display a remarkable mosaic of characters. While the surficial ornamentation is typical of non-avian saurischian dinosaurs, the three-layered prismatic structure of the eggshell is currently known only in extant and fossil eggs associated with birds. These eggs, about the size of a goldfinch's, mirror at the reproductive level the retention of small body size that was paramount in the transition from non-avian theropods to birds. The egg-layer may have been a small feathered theropod similar to those recently found in China.

引用

页码：477 / 482

页数：6

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