Geological Society of America

245 D11. Recent Advances in Biogeography/Biostratigraphy (Posters)

Wednesday, 25 September 2024
8:00 AM - 5:30 PM
Hall D

DEMARCATION OF ORYCTOCEPHALUS SALTERI BIOZONE IN THE WULIUAN (MIAOLINGIAN) OF THE SUMNA VALLEY, SPITI HIMALAYA (INDIA)

Paper number: 245-1
Program: Technical Sessions
Time: 8:00 AM – 5:30 PM

Authors

Garry Singla Presenting Author
Punjab Engineering College (Deemed to be University), Chandigarh, Chandigarh, Chandigarh
Birendra P. Singh
Panjab University, Chandigarh
N Bhargava Om
Panchkula
N Bhargava Om
Panjab University, Chandigarh
Ramanpreet Kaur
Amity University, Mohali, Punjab 140306, India, Mohali, Punjab
Vishal Verma
Panjab University, Chandigarh

Abstract

We report precisely demarcated Oryctocephalus salteri biozone in the Cambrian Parahio Member (Kunzam La Formation) well exposed on the southwest-facing slope above the right bank of the Sumna River, Spiti. The FAD and LAD of Oryctocephalus salteri are at 46.5 m and 60.8 m respectively, indicating having a 14.3 m local stratigraphic range of the taxon in the Sumna Valley. The Oryctocephalus salteri biozone is demarcated with a precise stratigraphic range of the eponymous species. This biozone encompasses trilobites Oryctocephalus salteri, Kunmingaspis stracheyi, Poriagraulos sp., Ziboaspis hostilis, Hundwarella memor, and Xingrenaspis hoboi. Based on the presence of the key taxon Hundwarella, the O. salteri biozone of the Kunzam La Formation (Spiti) is correlated with the Tonkinella-Hundwarella bearing level in the Nutunus Formation, Kashmir region.

Keywords: Oryctocephalus salteri biozone, Parahio Member, Kunzam La Formation, Sumna Valley, Spiti

Geological Society of America Abstracts with Programs. Vol. 56, No. 5

doi: 10.1130/abs/2024AM-403884

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