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Nitellites sahnii
Nitellites sahnii Horn Stockholm Contr. Geol., 1(1): 12. 30 Sep 1957
- Name
- Nitellites sahnii
- Rank
- Species
- Generic Name
- [Genus] Nitellites
- Authors (Pub.)
- Horn af Rantzien H.
- Publication
- Nitellaceous Charophyte gyrogonites in the Rajmahal Series, Upper Gondwana, of India, with notes on the flora and stratigraphy [1957/9]
- Journal
- Stockholm contributions in geology
- Volume
- 1
- Issue
- 1
- Page number
- 12
- Year
- 1957
- Parent Taxon
- [Genus] Nitellites
- Fossil Status
- gyrogonites
- Stratigraphy
- Upper Jurassic
- Location
- Nipania near Dumarchir, Amrapara District (Santal Parganas), Province of Bihar, India
- Paleoregion
- Eurasia (Indostan)
Data for Holotypus
- Repository
- Birbal Sahni Institute of Palaeobotany, Lucknow, India
- Repository Number
- VN 932 A
- Diagnosis
- Oosporangia 180 μ—190 μ long, and 130 μ—i8o μ wide, most or all compressed, prolate spheroidal to subprolate as viewed from the broadest sides. Spiral cells probably five, sinistrally spiralled, uncalcified, 25 μ—30 μ wide in the vicinity of EA, slightly narrowing towards the poles, with ecjuatorial angles < 10°, and showing six to eight slightly concave to flat convolutions. Apical poles formed by the union of five cell tips, at least in some cases broadened up to 60 μ apically, along a zig-zag line. Ectosporostine membrane reticulate, meshes in one layer only, widths of i 1/2—5 μ, sometimes arranged in rows perpendicular to the intercellular ridges. Fructification walls 10—20 μ thick.
