First steps on land: Arthropod trackways in Cambrian-Ordovician eolian sandstone, southeastern Ontario, Canada

被引：0

作者：

MacNaughton, RB

Cole, JM

Dalrymple, RW

Braddy, SJ

Briggs, DEG

Lukie, TD

机构：

[1] Geol Survey Canada, Calgary, AB T2L 2A7, Canada

[2] Queens Univ, Dept Geol Sci & Geol Engn, Kingston, ON K7L 3N6, Canada

[3] Univ Bristol, Dept Earth Sci, Bristol BS8 1RJ, Avon, England

[4] Nexen Canada Ltd, Calgary, AB T2P 3P7, Canada

来源：

GEOLOGY | 2002年 / 30卷 / 05期

关键词：

trace fossils; paleoecology; continental environment; Cambrian; Ordovician;

D O I：

10.1130/0091-7613(2002)030<0391:FSOLAT>2.0.CO;2

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Basal terrestrial deposits in the Cambrian-Ordovician Nepean Formation (Potsdam Group) near Kingston, Ontario, contain arthropod-produced trackways that extend the record of the first arthropod landfall back by as much as 40 m.y. The presence of large, simple cross-beds and of wind-produced structures, including adhesion ripples and wind-ripple lamination, indicates that the host strata were deposited in an eolian dune field, probably in a marginal-marine setting. The trackways were preserved mainly as undertracks and record the activities of large, amphibious arthropods, possibly euthycarcinoids.

引用

页码：391 / 394

页数：4