首页   按字顺浏览 期刊浏览 卷期浏览 The pendent sigmagraptine graptoloidKeblograptus bidens(Keble)
The pendent sigmagraptine graptoloidKeblograptus bidens(Keble)

 

作者: J.F. Riva,  

 

期刊: Alcheringa: An Australasian Journal of Palaeontology  （Taylor Available online 1992）
卷期: Volume 16, issue 4  

页码: 315-319

 

ISSN:0311-5518

 

年代: 1992

 

DOI:10.1080/03115519208619112

 

出版商: Taylor & Francis Group

 

关键词: Sigmagraptine;asymmetrical proximal development;sicular and thecal apertural infolds;pendent biramous rhabdosome;Lower Ordovician

 

数据来源: Taylor

 

摘要:

The pendent graptoloidDidymograptus bidensKeble is revived and assigned to the new genusKeblograptusand included in the family Sinograptidae, subfamily Sigmagraptina. This species has a short range in the Lower Ordovician (upper Chewtonian — lower Castlemainian) and may prove to be of significant biostratigraphic value.

 

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