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globalchange > 过去全球变化的重建

DOI:	10.1371/journal.pone.0113559
论文题名:	Reconsidering the Avian Nature of the Oviraptorosaur Brain (Dinosauria: Theropoda)
作者:	Amy M. Balanoff; G. S. Bever; Mark A. Norell
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2014
发表日期:	2014-12-10
卷:	9, 期:12
语种:	英语
英文关键词:	Dinosaurs ; Birds ; Cerebrum ; Semicircular canals ; Cerebellum ; Pituitary gland ; Theropoda ; Optic lobes
英文摘要:	The high degree of encephalization characterizing modern birds is the product of a long evolutionary history, our understanding of which is still largely in its infancy. Here we provide a redescription of the endocranial space of the oviraptorosaurian dinosaur Conchoraptor gracilis with the goal of assessing the hypothesis that it shares uniquely derived endocranial characters with crown-group avians. The existence of such features has implications for the transformational history of avian neuroanatomy and suggests that the oviraptorosaur radiation is a product of the immediate stem lineage of birds—after the divergence of Archaeopteryx lithographica. Results derived from an expanded comparative sample indicate that the strong endocranial similarity between Conchoraptor and modern birds largely reflects shared conservation of plesiomorphic features. The few characters that are maintained as being uniquely expressed in these two taxa are more likely products of convergence than homology but still indicate that the oviraptorosaur endocranial cavity has much to teach us about the complex history of avian brain evolution.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0113559&type=printable
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/19766
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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File Name/ File Size	Content Type	Version	Access	License
journal.pone.0113559.PDF（4973KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Download

作者单位:

Stony Brook University, Department of Anatomical Sciences, Stony Brook, New York, United States of America;American Museum of Natural History, Division of Paleontology, Central Park West at 79th Street, New York, New York, United States of America;New York Institute of Technology, College of Osteopathic Medicine, Department of Anatomy, Northern Boulevard, Old Westbury, New York, United States of America;American Museum of Natural History, Division of Paleontology, Central Park West at 79th Street, New York, New York, United States of America;American Museum of Natural History, Division of Paleontology, Central Park West at 79th Street, New York, New York, United States of America

Recommended Citation:

Amy M. Balanoff,G. S. Bever,Mark A. Norell. Reconsidering the Avian Nature of the Oviraptorosaur Brain (Dinosauria: Theropoda)[J]. PLOS ONE,2014-01-01,9(12)

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