Description of an Experimental Class within the Globigerinidae (Foraminifera)—2
作者:
G. H. Scott,
期刊:
New Zealand Journal of Geology and Geophysics
(Taylor Available online 1967)
卷期:
Volume 10,
issue 1
页码: 55-73
ISSN:0028-8306
年代: 1967
DOI:10.1080/00288306.1967.10428184
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Globigerinidae with multiple apertures found in Miocene samples from Oamaru and Clifden, Southland, are described in terms of the degree to with thenth chamber envelops earlier chambers, the height of the primary and one of the supplementary apertures, the number of chambers and apertures per specimen, and direction of chamber coiling. Measured characters show patterns of continuous variation within the class studied. This emphasises the arbitrary character of the “central types” used by Blow to describe the morphological changes in the lineage leading toOrbulinaand suggests that simple statistical measures may better express these trends.
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