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Abnormalities of growth in specimens of gastrioceras from the lower coal measures

 

作者: D. Magraw,  

 

期刊: Geological Journal  （WILEY Available online 1954）
卷期: Volume 1, issue 4  

页码: 394-399

 

ISSN:0072-1050

 

年代: 1954

 

DOI:10.1002/gj.3350010407

 

出版商: John Wiley&Sons Ltd

 

数据来源: WILEY

 

摘要:

AbstractCertain abnormalities of growth have recently been seen in specimens of the genusGastrioceras. These take the form of a distinct groove occurring on the venter, and photographs of three specimens showing the salient features of these grooves are reproduced. Details of the abnormalities are given and their significance discussed.

 

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