Rock building Cretaceous - Tertiary algae from India - an ecological perspective

Authors

  • A. Rajanikanth Birbal Sahni Institute of Palaeobotany, 53, University Road, Lucknow 226007, India

DOI:

https://doi.org/10.54991/jop.1991.1790

Keywords:

Calcareous algae, Marine realm, Calcification, Evolution, Palaeoenvironment, Cretaceous-Tertiary

Abstract

Fossil benthonic photosynthetic algae capable of calcification contributed to the formation of Indian Cretaceous-Tertiary carbonate deposits. A comparative assessment of different marine calcareous algal assemblages known from various sedimentary basins and their ecological requirements have been highlighted. A comprehensive synthesis and retrospect of research on calcareous algae demonstrate extensive growth of green and red algae during Cretaceous-Tertiary times in India. The calcareous blue-green algae are feebly represented in the Cretaceous deposits and not recorded from the Tertiary deposits. Various ecological factors determined the distribution of different calcareous algal groups. An apparent extinction of calcareous algae is attributed to gaps in our knowledge and evolutionary changes.

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Published

1991-12-31

How to Cite

Rajanikanth, A. (1991). Rock building Cretaceous - Tertiary algae from India - an ecological perspective. Journal of Palaeosciences, 40, 399–412. https://doi.org/10.54991/jop.1991.1790

Issue

Section

Research Articles

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