Petrified spores and pollen grains from the Jurassic Rocks of Rajmahal Hills, Bihar

Abstract

Forty-six types of spores and pollen grains have been described from the Nipania chert. They are classified in accordance with the classification suggested by Pant. Pteridophytic spores, cycadophytic pollen grains and the winged grains of the conifers are more or less equally represented in the microflora. Among the pteridophytic spores are some types resembling the spores of modern Lycopodium, Selaginella, Cyatheaceae and Schizaea. Megaspores are also described for the first time from the Jurassic rocks of India. The winged pollen includes two, three, and four-winged grains. Some new groups and sub-groups have been proposed in the classification suggested by Pant.

Revision of Jurassic spores and pollen grains from Andigama, Ceylon

“…The Upper Mesozoic miospore assemblages from India are known from the Rajmahal Hills (RAO, 1943;VISHNU-MITTRE, 1954;SAH & JAIN, 1965); Vemavaram (RAlIfANU-JAM, 1957); Jaiselmer (SRIVASTAVA, 1963); Jabalpur (DEV, 1961); Dhrangadhra (VARMA & RAWAT, 1964) and from Cutch (SINGH et al, 1964).…”

Studies on the Upper Gondwana of Cutch - 1. Mio and Macrospores

“…These assemblages, as represented by their spore genera, are different in character by the absence of some of the important genera found in the Umia-beds and having certain individualistic gerJera which are absent in the latter assemblage. Vishnu-Mittre (1954) (PL. 1,FIGS.…”

“…Spores from the other Upper Mesozoic formations in India have been described by Vishnu-Mittre (1954). Sah (1955).…”

Addition to the Mesozoic flora of the Rajmahal Hills, Jharkhand, India

“…T HE fossil flora of the Mesozoic rocks of the Rajmahal Hills, Jharkhand has been in literature since the publication ofOldham and Monis (1863) who described a number of fossil plants belonging to pteridophytes and gymnospenns from the area. Since then a number of research papers and review articles have been published on fossil plants ofRajmahal Hills (BaneIji, 2000;BaneIji & Jana, 2003;Bohra & Sharma, 1979;Bose, 1953;Bose & Sah, 1954, Bose et al, 1985Feistmantel, 1877;Ganju, 1946;Gupta, 1943Gupta, , 1971Sah&Jain, 1965;Sahni 1932aSahni ,b, 1948Sen Gupta, 1988;Seward & Sahni, 1920;Shanna 1967aShanna , 1970Shanna , 2002Shanna , 2004Suthar & Shanna 1988, Suthar et aI., 1986Vishnu-Mittre 1953, 1954, 1957, 1959. In addition to the mega fossils isolated seeds, spores and pollen grains are also described from the area (Sah & Jain, 1965;Tripathi, 2004;Vishnu-Mittre, 1954).…”