New cyanophycean remains from the Blaini formation (terminal neoproterozoic sequence) of Mussoorie syncline, Lesser Himalaya, India

P.K. Maithy; Rupendra Babu; G. Kumar; V.K. Mathur

doi:10.54991/jop.1994.1163

Authors

P.K. Maithy Birbal Sahni Institute of Palaeobotany, 53, University Road, Lucknow 226007, India
Rupendra Babu Birbal Sahni Institute of Palaeobotany, 53, University Road, Lucknow 226007, India
G. Kumar Geological Survey of India, Northern Region, Lucknow 226006, India
V.K. Mathur Geological Survey of India, Northern Region, Lucknow 226006, India

DOI:

https://doi.org/10.54991/jop.1994.1163

Keywords:

Blainiella, Cyanophyceae, Mussorrie Syncline, Blaini Formation, Terminal Neoproterozoic (India)

Abstract

A new algal form, Blainiella gen. nov., comparable in its morphological aspects to the modern form Hyella, is recorded from the Blaini Formation, Mussoorie Syncline. The fossil shows linear filament formed of rectangular cells placed end to end; reproduction by endosporulation, thick globular endospores formed towards terminal end of linear filaments, baeocytes formed within endospores by cytoplasm desmochesis and released by wall dissolution of endospores, each baeocyte forms linear filament by vegetative reproduction. This new genus represents different stages of life cycles of microbiota reported earlier from the same formation by Joshi et al., (1988).