Early Cambrian trail Archaeonassa from the Sankholi Formation (Tal Group), Nigali Dhar syncline (Sirmur district), Himachal Pradesh

The ichnotaxon Archaeonassa is described from the lower part of the Banded Siltstone Member of the Sankholi Formation (Tal Group) exposed at Ganog locality, Nigali Dhar syncline (Sirmur district), Himachal Pradesh. This is the first record of this ichnotaxon from the Cambrian successions of the Indi...

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Bibliographic Details
Published in:Journal of the Geological Society of India 2015-06, Vol.85 (6), p.717-721
Main Authors: Singh, Birendra P., Bhargava, O. N., Chaubey, Ravi S., Kishore, Naval, Prasad, S. K.
Format: Article
Language:English
Subjects:
Animals
Deposition
Earth and Environmental Science
Earth Sciences
Formations
Fossils
Geological time
Geology
Himalayas
Hydrogeology
India
Marine environments
Mollusks
Paleontology
Siltstone
Stratigraphy
Synclines
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Summary:The ichnotaxon Archaeonassa is described from the lower part of the Banded Siltstone Member of the Sankholi Formation (Tal Group) exposed at Ganog locality, Nigali Dhar syncline (Sirmur district), Himachal Pradesh. This is the first record of this ichnotaxon from the Cambrian successions of the Indian Himalaya. The trail Archaeonassa is attributed to the locomotion of mollusks-like animal close to the sediment-water interface. Occurrence of this ichnogenus with other known traces from the Banded Siltstone Member (Sankholi Formation) indicates a shallow marine environment for the deposition. The ichnogenus Archaeonassa in Banded Siltstone Member (Sankholi Formation) indicate the extant of molluscan animals in the early Cambrian time.
ISSN:0016-7622
0974-6889
DOI:10.1007/s12594-015-0268-6