Winteroxylon oleiferum Brea, A.Iglesias, Wilf, E.Moya et Gandolfo
Plant Fossil Names Registry Number: PFN002387
Act LSID: urn:lsid:plantfossilnames.org:act:2387
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
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.
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.
The speciﬁc name refers to the abundance of oil cells in the wood.
early Eocene of northwestern Chubut Province, Huitrera Formation
Laguna del Hunco, Chubut Province, Argentina (lat. 42727036.26 S, long. 707 2 0 17.86 W)
Plant fossil remain