Winteroxylon oleiferum Brea, A.Iglesias, Wilf, E.Moya et Gandolfo

Plant Fossil Names Registry Number: PFN002387

Act LSID: urn:lsid:plantfossilnames.org:act:2387

Authors: M. Brea, A. Iglesias, P. Wilf, E. Moya & M. A. Gandolfo

Rank: species

Reference: Brea, M., Iglesias, A., Wilf, P., Moya, E. & Gandolfo, M. A. (2021): First South American record of Winteroxylon, Eocene of Laguna del Hunco (Chubut, Patagonia, Argentina): New link to Australasia and Malesia. – International Journal of Plant Sciences 182(3): 185–197., link

Page of description: 189

Illustrations or figures: figs 3–6

Types

Holotype MPEF-Pb 3997a–e, Museo Paleontológico Egidio Feruglio, Trelew, Patagonia, Argentina
Figures: figs 3-6

Note: Holotype consists of one macrofossil and four microscope slides.

Original diagnosis/description

Growth rings indistinct. Tracheids thick walled with circular bordered pits, mainly in uniseriate, biseriate, and triseriate rows, alternate to opposite. Axial parenchyma either diffuse or in tangentially or radially oriented pairs of parenchyma strands. Rays of two different types (narrow and broad), heterocellular and very tall, uniseriate, biseriate, and multiseriate (3–15 cells wide). Bordered pits in ray cells. Sclerotic nests, oil cells, and dark contents in rays present.

Etymology

The specific name refers to the abundance of oil cells in the wood.

Stratigraphy

Paleogene, Eocene
early Eocene of northwestern Chubut Province, Huitrera Formation

Locality

Argentina
Laguna del Hunco, Chubut Province, Argentina (lat. 42727036.26 S, long. 707 2 0 17.86 W)

Plant fossil remain

fossil wood