Aceroxylon aceroides Akkemik

Plant Fossil Names Registry Number: PFN002216


Author: Ü. Akkemik

Rank: species

Reference: Akkemik, Ü. (2021): A re-examination of the angiosperm wood record from the early and middle Miocene of Turkey, and new species descriptions. – Acta Palaeobotanica 61(1): 42–94.

Page of description: 77

Illustrations or figures: pls 17, 18


Holotype INL02, Department of Forest Botany, Faculty of Forestry, Istanbul University-Cerrahpasa, Istanbul, Turkey
Figures: pls 17, 18

Note: Holotype: Three thin sections of specimen INL02.

Original diagnosis/description

Growth ring boundaries distinct and marked by 1–2 rows of marginal axial parenchyma cells. Wood diffuse-porous. Vessels circular or angular, solitary or mainly in radial multiples of 2–3 or rarely 4 or more vessels. Mean vessel tangential diameter ≤50 μm, 40–100 vessels per mm2. Axial parenchyma both apotracheal diffuse and marginal. Some vessels filled with dark deposits (Pl. 17A–C). Rays of two distinct sizes, generally uniseriate, sometimes biseriate and multiseriate, with wider rays commonly 4–5-seriate (Pl. 17D). Average height 213.5 (50.7–471.5) μm (max. 46 cells) (Acarca Bayam et al., 2018). Helical thickenings common (Pl. 18A, D, E). Fibres generally thin-walled, septate fibres common. Prismatic crystals present in chambered cells (Pl. 18B). Rays homocellular, composed of procumbent ray cells. Intervessel pits alternate (Pl. 18C, D). Perforation plates simple (Pl. 18E).

PFNR Administrator note: mm2 to be read as square mm (our text box does not allow upper index).


The epithet “aceroides” refers to the modern genus Acer.


Neogene, Miocene
Hançili Formation, early Miocene


Inözü Valley of Beypazarı (north side), Ankara

Plant fossil remain

fossil wood


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