A DEVONIAN TETRAPOD FROM NORTH-AMERICA

被引：70
|
作者：
DAESCHLER, EB
SHUBIN, NH
THOMSON, KS
AMARAL, WW
机构：
[1] UNIV PENN, DEPT GEOL, PHILADELPHIA, PA 19104 USA
[2] UNIV PENN, DEPT BIOL, PHILADELPHIA, PA 19104 USA
[3] HARVARD UNIV, MUSEUM COMPARAT ZOOL, CAMBRIDGE, MA 02138 USA
来源：
SCIENCE | 1994年 / 265卷 / 5172期
关键词：
D O I：
10.1126/science.265.5172.639
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：
An early tetrapod fossil from the Upper Devonian of Pennsylvania (Catskill Formation) extends the temporal range of tetrapods in North America and suggests that they attained a virtually global equatorial distribution by the end of the Devonian. Derived features of the shoulder girdle indicate that appendicular mechanisms of support and propulsion were well developed even in the earliest phases of tetrapod history. The specialized morphology of the pectoral skeleton implies that the diversity of early tetrapods was great and is suggestive of innovative locomotor patterns in the first tetrapods.
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页码：639 / 642
页数：4
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