Palmoxylon subantarcticae L.C.A.Martínez et Leppe in Martínez, Leppe, Manríquez, Pino, Trevisan, Manfroi & Mansilla

Plant Fossil Names Registry Number: PFN003129


Authors: L. C. A. Martínez & M. Leppe

Rank: species

Reference: Martínez, L. C. A., Leppe, M., Manríquez, L. L.M., Pino, J. P., Trevisan, C., Manfroi, J. & Mansilla, H. (2023): A unique Late Cretaceous fossil wood assemblage from Chilean Patagonia provides clues to a high-latitude continental environment. – Papers in Palaeontology 9(6): 1–45., link

Page of description: 17

Illustrations or figures: Fig. 9


Holotype CPAP 7197, Instituto Antártico Chileno
Figures: fig. 9

Note: Paratype: CPAP 7198.

Original diagnosis/description

Fragment of stem composed of ground and tabular parenchyma cells and scattered fibrovascular bundles. Ground parenchyma of rod-like and slightly elongated cells, with intercellular spaces (lacunae). Tabular parenchyma 1 to 3 cells wide, sheathing the fibrovascular bundles. Solitary circular fibrous bundles in the central zone. Stegmatas with spherical echinate silica-bodies in axial series. Fibrovascular bundles irregularly distributed, composed of a fibrous zone (sclerenchyma), vascular zone, and fibrous ventral cap. Fibrous zone reniforme, auricular sinus rounded, and occasionally absent. Vascular zone with one phloem strand, protoxylem vessels, and 3 (1–6) Metaxylem vessels, with scalariform perforation plates and tyloses.


The specific name is derived from the Latin prefix ‘sub’ (almost), and the noun ‘antarcticae’ (genitive of Antarctica).


Cretaceous, Upper Cretaceous, Maastrichtian
Austral Basin, Dorotea Formation.


El Puesto, Las Chinas River Valley, Magallanes Region, Chile.

Plant fossil remain

fossil wood


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