Ordovician graptolite faunas in Australia
作者:
F. C. Beavis,
期刊:
Journal of the Geological Society of Australia
(Taylor Available online 1975)
卷期:
Volume 22,
issue 4
页码: 447-455
ISSN:0016-7614
年代: 1975
DOI:10.1080/00167617508728910
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Three Australian Ordovician graptolite faunas are described; the short‐lived Anisograptid Fauna is followed by the Dichograptid Fauna, which in turn is succeeded by the Diplograptid Fauna. The Dichograptid Fauna consists of two sub‐faunas, the Tetragraptus‐Didymograptus and the Isograptid; the Diplograptid Fauna consists of the Glyptograptus‐Amplexograptus and the Leptograptus‐Orthograptus sub‐faunas. The Diplograptid Fauna becomes extinct low in the Silurian, giving way to the Monograptid Fauna, which persists into the Devonian.
点击下载:
PDF (504KB)
返 回