Hadrosaurs Were Perennial Polar Residents

被引：53

作者：

Chinsamy, Anusuya ^{[1
]}

Thomas, Daniel B. ^{[1
]}

Tumarkin-Deratzian, Allison R. ^{[2
]}

Fiorillo, Anthony R. ^{[3
]}

机构：

[1] Univ Cape Town, Dept Zool, ZA-7701 Cape Town, South Africa

[2] Temple Univ, Dept Earth & Environm Sci, Philadelphia, PA 19122 USA

[3] Museum Nat & Sci, Dept Paleontol, Dallas, TX USA

来源：

ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY | 2012年 / 295卷 / 04期

基金：

美国国家科学基金会; 新加坡国家研究基金会;

关键词：

Alaska; dinosaur; Edmontosaurus; histology; migration; overwintering; DINOSAURS; ALASKA; MIGRATION; ANIMALS;

D O I：

10.1002/ar.22428

中图分类号：

R602 [外科病理学、解剖学]; R32 [人体形态学];

学科分类号：

100101 ;

摘要：

Recent biomechanical evidence has fuelled debate surrounding the winter habits of the hadrosaurian dinosaur Edmontosaurus (ca. 70 Ma). Using histological characteristics recorded in bone, we show that polar Edmontosaurus endured the long winter night. In contrast, the bone microstructure of temperate Edmontosaurus is inconsistent with a perennially harsh environment. Differences in the bone microstructure of polar and temperate Edmontosaurus consequently dispute the hypothesis that polar populations were migratory. The overwintering signal preserved in the microstructure of polar Edmontosaurus bone offers significant insight into the life history of dinosaurs within the Late Cretaceous Arctic. Anat Rec, 295: 610-614, 2012. (C) 2012 Wiley Periodicals, Inc.

引用

页码：610 / 614

页数：5

共 28 条

[1] The merits and implications of travel by swimming, flight and running for animals of different sizes [J].