Dadoxylon mandroense S.C.D.Sah et K.P.Jain

Plant Fossil Names Registry Number: PFN000233


Authors: S. C. D. Sah & K. P. Jain

Rank: species

Reference: Sah, S. C. D. & Jain, K. P. (1964): Some fossil woods from the Jurassic of Rajmahal Hills, Bihar, India. – The Palaeobotanist 12(2): 169–180 + 3 pls., link

Page of description: 173

Illustrations or figures: text-figs 7–8, pl. 1, fig. 8, pl. 2, figs 9–10, pl. 3, figs 19–21


Holotype 2611, Birbal Sahni Institute of Palaeosciences, Lucknow, India
Figures: text-figs 7–8, pl. 1, fig. 8, pl. 2, figs 9–10, pl. 3, figs 19–21

Note: Holotype characteristic: Large petrified, decorticated secondary wood, measuring 10 in. in length and 16 in. in diameter.

Original diagnosis/description

Secondary wood, growth rings distinct, onlv radial walls of the tracheids pitted. Pits in the early wood tracheids uni- to tri-seriate, contiguous, tangentially flattened, alternate and hexagonal with broadly oval pit apertures. In the late wood tracheids, pits uni- to partially biseriate, circular, usually touching each other, very rarely separate, pairing occurs in biseriate condition. 4-12 cross-field pits in the early wood; pits circular, contiguous with elliptical and inclined apertures. In the late wood 2-6, usually 3 or 4 pits in the field; pits circular, separate with rounded or broadly oval pit pores. Medullary rays simple, uniseriate, 1-15 cells high (average 3-4 cells). Xylem parenchyma absent.


The specific name is after the locality "Mandro" from where the specimen was collected.


Rajmahal Stage


Mandro, Rajmahal Hills, Bihar.

Plant fossil remain

fossil wood



Use comments to notify PFNR administrators of mistakes or incomplete information relevant to this record.