Cercioxylon zeynepae Akkemik

Plant Fossil Names Registry Number: PFN000548

Act LSID: urn:lsid:plantfossilnames.org:act:548

Author: Ü. Akkemik

Rank: species

Genus: Cercioxylon Akkemik

Reference: Akkemik, Ü. (2019): Validation of four new plant fossil names from Turkey. – Fossil Imprint 75(2): 289–291.

Page of description: 290

Illustrations or figures: Text-fig. 1b

Name is type for


Holotype YIP02, Department of Forest Botany, Faculty of Forestry, Istanbul University-Cerrahpasa, Istanbul, Turkey
Figures: Text-fig. 1b

Note: Holotype figured also in Akkemik (2019: Turkish Journal of Earth Science, 28: pls V, VI) – see Akkemik (2019: Fossil Imprint, 75(2): 290).

Original diagnosis/description

Wood semiring to ring porous, vessels in radial multiples and clusters common, axial parenchyma paratracheal to vasicentric and in confluent type,
perforation plate simple, banded, and in dendritic to netlike groups with vessels, and axial parenchyma storied, 2–4 cells per parenchyma strands, ray 1–5 seriate (generally 2–4 seriate), multiseriate ray height generally 18–27 (max. 56) cells, and uniseriate rays 5–15 cells. All rays procumbent or body ray cells procumbent with one to four square marginal cells, vestured ray pits common.


The epithet zeynepae originates from the name Zeynep. It is used in honor of my wife as she has been the most patient life-partner throughout my scientific life.


Neogene, Pliocene
Örencik Formation (Yörük member).


Close to the village of Yıprak in the district of Çerkeş, province of Çankırı.

Plant fossil remain

fossil wood



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