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Skeletal microfauna of Meishucunian and Qiongzhusian (Precambrian–Cambrian boundary) age from the Ganga Valley, Lesser Himalaya, India

Correspondence and Notes

Published online by Cambridge University Press:  01 May 2009

Gopendra Kumar ,
D. K. Bhatt  and
B. K. Raina
Gopendra Kumar
Affiliation:
Geological Survey of India, Lucknow, 226 006, India
D. K. Bhatt
Affiliation:
Geological Survey of India, Lucknow, 226 006, India
B. K. Raina
Affiliation:
Geological Survey of India, Jammu, 180 004, India
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Abstract

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The earliest skeletal microfauna of Precambrian-Cambrian age recovered from the ‘Lower Tal’ sequence (Chert-Phosphorite to Calcareous members) of the Tal Formation, exposed in the Ganga Valley, Lesser Himalaya, Uttar Pradesh, India, has been grouped into three assemblages. In ascending order these are: assemblage I, containing Anabarites trisulcatus Missarzhevsky, Tiksitheca korobovi (Miss.). Circotheca sp., Turcutheca sp., Spirellus columnorus Jiang and Olivooides alveus Qian; assemblage II, yielding Allonia erromenosa Jiang, A. sp. cf. A. erromenosa Jiang, Dimidia simpleca Jiang, D. sp. cf. D. simpleca Jiang and Hyolithellus sp.; and assemblage III, comprising Pelagiella lorenzi Kobayashi, Auriculatespira madianensis Zhou & Xiao and A. andunca He & Pei. The assemblages I and II are correlatable to the Meishucunian Zone I and Zone III respectively, and the assemblage III to the Qiongzhusian Stage of China. Thus the ‘Lower Tal’ sequence is assigned to Precambrian–Cambrian age.

Type
Correspondence and Notes
Information
Geological Magazine , Volume 124 , Issue 2 , March 1987 , pp. 167 - 171
Copyright
Copyright © Cambridge University Press 1987

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