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Sudan, C. S.
- Trace Fossils from the Pin Section of Spiti Valley, Himachal Pradesh and their Stratigraphic Significance
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Authors
Affiliations
1 Department of Geology, University of Jammu, Jammu-180 006, IN
1 Department of Geology, University of Jammu, Jammu-180 006, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 55, No 6 (2000), Pagination: 649-654Abstract
The Early Cambrian trace fossils Planolites, Skulithos, Psammichnites, Neonereites, Didymaulichnus, Monurnorphichnus, Dirnorphichnus, Diplichnites, Rusophycus and Cruzianu are described from the Kunzum La Formation (Haimanta Group) of the Pin section in Spiti valley. These trace fossils occur well below the body fossil zone reflecting their abundance at two stratigraphic levels. The Precambrian-Cambrian boundary could be well betow the earliest trace fossil horizon. The abundance of trace fossils at these two levels is a universd phenomenon in the Himalaya and indicates two acme zones with proliferation of vermiform organisms in the lower zone and arthropod forms in the upper zone.Keywords
Palaeontology, Trace Fossils, Early Cambrian, Kunzum La Formation, Pin Section, Spiti Valley, Himachal Pradesh.
- Trace Fossil Distribution and Stratigraphic Setting of Garbyang Formation in the Girthi-Ganga Section of Kumaun
Abstract Views :211 |
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Authors
C. S. Sudan
1,
U. K. Sharma
1
Affiliations
1 PG. Department of Geology, University of Jammu, Jammu-180 006, IN
1 PG. Department of Geology, University of Jammu, Jammu-180 006, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 55, No 2 (2000), Pagination: 175-182Abstract
Trace fossils from Garbyang Formation of Kumaun have been reported from two stratigraphic levels. The lower horizon F1 comprises simple traces belonging to the ichnogenera Gordia, Chondrites, Margaritichnus, Skolithos, Cochlichnus and Bergaueria. The upper F2 horizon comprises advanced type of traces of arthropod origin i.e., Monomorphichnus, Dimorphichnus, Diplichnites and Kupwaria along with a few ichnofossils of F1 horizon. As in other Himalayan sections these trace fossil horizons are devoid of body fossils. But in Kumaun no well defined body fossils of Early Cambrian age comparable to Redlichia zone of Kashmir and Spiti have yet been reported apart from some fragmentary, genal spines of trilobites. The trace fossils are important for evaluating the metazoan evolution.Keywords
Palaeontology, Trace Fossil, Garbyang Formation, Kumaun Himalaya.- Trace Fossils from the Cambrian Sequence of Zanskar (Ladakh Himalaya)
Abstract Views :185 |
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Authors
Affiliations
1 Department of Geology, University of Jammu, Jammu, IN
2 Wadia Institute of Himalayan Geology, Dehra Dun, IN
1 Department of Geology, University of Jammu, Jammu, IN
2 Wadia Institute of Himalayan Geology, Dehra Dun, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 51, No 6 (1998), Pagination: 777-784Abstract
Spiti - Zanskar Basin of Himalaya exposes rocks ranging in age from Proterozoic to Early Cenozoic. Cambrian trilobites, brachiopods and trace fossils are known from the Kurgiakh area of the basin. The present paper concerns with Early Cambrian trace fossils reported from the same stratigraphic section in which trilobite body fossils are known. The assemblage of trace fossils include: Chondrites sp., Cruziana sp., Rusophycus sp., Phycodes palmatum, sp., Didymaulichnus sp., Protichnites sp., Monomorphicnus monolinearis, Diplichnites sp. associated with scratch marks indicating trilobite movements. The finding of trace fossils far below the definite brachiopod and trilobite body fossil horizons in the Lower Cambrian sequence of Kurgiakh area of Zanskar is of significance.Keywords
Palaeontology, Trace Fossils, Cambrian, Ladakh, Himalaya.- Bolaspidella from the Cambrian of Kashmir and its Stratigraphic Significance
Abstract Views :211 |
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Authors
S. K. Shah
1,
C. S. Sudan
1
Affiliations
1 Department of Geology, University of Jammu, Jammu 180001, IN
1 Department of Geology, University of Jammu, Jammu 180001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 23, No 5 (1982), Pagination: 236-245Abstract
New species of the trilobite genus Bolaspidella viz., B. himalayensis, B. costalus, B. magamensis and Bolaspidella sp. have been recorded from the top part of the Middle Cambrian of Kashmir. Bolaspidella bearing beds constitute a well marked zone which may be extending into the base of Upper Cambrian. This is the first record of Bolaspidella from Asia and the stratigraphic position of this genus corresponds exactly to that known from North America.- Trace Fossils from the Cambrian of Kashmir and their Stratigraphic Significance
Abstract Views :192 |
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Authors
S. K. Shah
1,
C. S. Sudan
1
Affiliations
1 Department of Geology, University of Jammu, Jammu-180001, IN
1 Department of Geology, University of Jammu, Jammu-180001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 24, No 4 (1983), Pagination: 194-202Abstract
Trace fossil assemblages studied from the known stratigraphic horizons of Cambrian with a view to establishing their ranges in Himalayan succession have indicated that trilobite tracks and trails are stratigraphically significant. These include the ichnogenera Monomorphichnus, Rusophycus and a new genus and species, Kupwaria fusiformis, together with varieties of claw scratchings. As against this, the various species of ichnogenus Phycodes have stratigraphic ranges which do not exactly, correspond to their reported distribution from other parts of the world. A range chart based on associated trilobite fossils has been built for stratigraphically significant ichnofossil assemblages.- Damesellidae from the Cambrian of Kashmir
Abstract Views :202 |
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Authors
S. K. Shah
1,
C. S. Sudan
1
Affiliations
1 Department of Geo1ogy, University of Jammu, Jammu 180001, IN
1 Department of Geo1ogy, University of Jammu, Jammu 180001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 29, No 5 (1987), Pagination: 503-509Abstract
One species each of the genera Damesella and Blackwelderioides are being described for the first time from India. Damesella shergoldi sp. nov. occurs as an enormous population immediately above the uppermost horizon of Middle Cambrian in Magam section of Kashmir and the Blackwelderioides cf. monkei (Walcott) also occurs at an identical stratigraphic position in the section at Trahagam. Their comparisons are made with taxa reported from other parts of Autralo-Asian Province.- Agnostid Fauna from the Middle Cambrian of Kashmir
Abstract Views :167 |
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Authors
S. K. Shah
1,
C. S. Sudan
1
Affiliations
1 Department of Geology. University of Jammu, Jammu 180 001, J & K, IN
1 Department of Geology. University of Jammu, Jammu 180 001, J & K, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 30, No 1 (1987), Pagination: 48-60Abstract
Agnostid fauna from the Middle Cambrian Solenopleura-Tonkinella Zone of northwestern Kashmir is described. It includes Peronopsis cf. tramitis, P. amplaxis in addition to a new species, P. extensa and two left under open nomenclature. The other taxa include Acadagnostus acadicus, A. scutalis and Pentagnostus cf. anabarensis. The assemblage is correlated with the Ptychagnostus gibbus zone of Australia and North America.- Agnostid Fauna from the Cambrian of Spiti
Abstract Views :170 |
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Authors
A. K. Sahni
1,
C. S. Sudan
1
Affiliations
1 P.G. Department of Geology, University of Jammu, Jammu - 180 004, IN
1 P.G. Department of Geology, University of Jammu, Jammu - 180 004, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 48, No 6 (1996), Pagination: 653-662Abstract
An agnostid fauna from the Middle Cambrian (Peronopsis-Oryctocephalus zone) of Parahio valley, Spiti is described. It includes Peronopsis amplaxis. Peronopsis sp., Pagetia griesbachi and Pagetia sp. This assemblage is correlated with S olenopleura-Tonkinella zone of Kashmir and also with Ptychagnostus gibbus zone of Australia and North America.Keywords
Palaeontology, Agnostide, Middle Cambrian, Spiti, Himalaya.- Trace Fossil Assemblage in the Lower Siwalik Suhgroup of Jammu Region, J & K State
Abstract Views :222 |
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Authors
B. P. Singh
1,
C. S. Sudan
1
Affiliations
1 Department of Geology University of Jammu, Jammu - 180 004, IN
1 Department of Geology University of Jammu, Jammu - 180 004, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 50, No 3 (1997), Pagination: 357-359Abstract
Trace fossils are found in the lower Siwalik rocks at Mansar and Jhajjar Kotli. The trace fossils are identified as Thalassinoides and Imbrichnus. It is interpreted that these fossils were developed in flood plains.Keywords
Palaeontology, Trace Fossils, Siwalik Rocks, J&K, Himalaya.- Ichnofacies of the Murree Group in Jammu Area and their Ecological Implications during Late Palaeogene in the NW Himalaya
Abstract Views :189 |
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Authors
Affiliations
1 Department of Geology, University of Jammu, Jammu - 180 006, IN
1 Department of Geology, University of Jammu, Jammu - 180 006, IN