Neomariopteris barakarensis Ashw.K.Srivast.

Plant Fossil Names Registry Number: PFN001756

Act LSID: urn:lsid:plantfossilnames.org:act:1756

Rank: species

Reference: Srivastava, A. K. (1978): Studies in the Glossopteris Flora of India – 43. Some new plant fossils from the Lower Gondwana sediments of Auranga Coalfield, Bihar. – The Palaeobotanist 25: 486–495., link

Page of description: 488

Illustrations or figures: text-fig. 2A, B, pl. 2, figs 6–8

Types

Holotype 70/1311, Birbal Sahni Institute of Palaeosciences, Lucknow, India
Figures: text-fig. 2A, pl. 2, fig. 6

Original diagnosis/description

Fronds bi- to tripinnate, imparipinnate, primary rachis winged; secondary rachis arises at an angle of 45°-60°, alternately to subopposite; pinnae linear, elongate, lanceolate, arise at 45°; sterile and fertile pinnules alike, alternately arranged, lanceolate to spathulate in shape, with a decurrent base, apex rounded, margin crenulate, fused near the base; apical pinnae possess fertile pinnules, a single sorus present at the junction of two pinnules; situated ± half way between the pinna margin and pinna rachis; each sorus shows a circular impression of 5-6 free sporangia, arranged in a ring around a central point.

Stratigraphy

Permian
Barakar Stage, Lower Gondwana, Lower Permian

Locality

India
Churia fireclay pit, Auranga Coalfield, Bihar

Plant fossil remain

macro- and meso-fossils-embryophytes except wood

Comments

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