Quercoxylon yaltirikii

Name

Quercoxylon yaltirikii

Rank

Species

Generic Name

[Genus] Quercoxylon

Authors (Pub.)

Akkemik Ü.  

Publication

A re-examination of the angiosperm wood record from the early and middle Miocene of Turkey, and new species descriptions [2021/6]

Journal

Acta Palaeobotanica

Volume

61

Issue

1

Page number

56

Year

2021

Fossil Status

stems (wood)

Stratigraphy

Burdigalian

Strat. comment

Hançili Formation

Location

Beypazarı-Inozu valley (north side), Beypazarı district, Ankara, Türkiye

Paleoregion

Eurasia (Anatolia)

Data for Holotypus

Repository

ISTO Herbarium, Faculty of Forestry, Istanbul University-Cerrahpaşa, Istanbul, Turkey

Repository Number

Three thin sections of specimen INL09

Num

Pl. 6A–G

Descr.

holotype not specified among illustrations

Pub.

A re-examination of the angiosperm wood record from the early and middle Miocene of Turkey, and new species descriptions [2021/6]

Diagnosis

Growth ring boundaries distinct and semi-ring-porous or almost ring-porous. Vessel tangential diameter 82(22–182) µm, radial diameter 109 (33–206) µm; vessels exclusively solitary (90% or more) and with thick and circular walls. Tyloses very common in wider vessels. Large multiseriate rays clearly seen with the naked eye. Well preserved axial parenchyma clearly visible, arranged in short tangential bands in single rows. Ray number 4–6 per mm of two distinct sizes. Narrow uniseriate and biseriate rays measure 334 (110–805) µm by 14 (4–26) µm in width; large multiseriate rays range from 10 to 25 cells, or 258 (67–411) µm in width by >1 mm in height. Crystals very common in enlarged and not enlarged cells of axial parenchyma and rays, and also found in chambered cells. Some axial parenchyma cells rather enlarged in radial section. Perforation plates simple. All ray cells procumbent and heterocellular, with 1–2 rows of vertical or square marginal cells.