Plataninium piercei

Name

Plataninium piercei

Rank

Species

Generic Name

[Genus] Plataninium

Authors (Pub.)

Wheeler E. A. McClammer J. U. LaPasha C. A.  

Publication

Similarities and differences in dicotyledonous woods of the Cretaceous and Paleocene of San Juan Basin, New Mexico, USA [1995/1]

Journal

IAWA Journal

Volume

16

Issue

3

Page number

237

Year

1995

Fossil Status

stems (wood)

Stratigraphy

Maastrichtian

Strat. comment

Kirtland Formation

Location

Locality WI8, silty clay-shale layer in McClammer Section 20, San Juan Basin, New Mexico, USA

Paleoregion

America (North)

Data for Holotypus

Repository

Yale Peabody Museum of Natural History, New Haven, USA

Repository Number

YPM 30146

Num

18-24

Pub.

Similarities and differences in dicotyledonous woods of the Cretaceous and Paleocene of San Juan Basin, New Mexico, USA [1995/1]

Diagnosis

Growth rings absent. Wood diffuse-porous. Vessels predominantly solitary; mean tangential diameter 48 (sd = 9) um; 49-64-71 per sq. mm; perforations scalariform with widely spaced 6-9 bars; spacing between bars 17-22 um and a bar thickness of 5-6 um; vessel wall pitting opposite to sub-alternate. Axial parenchyma predominantly apotracheal, mostly diffuse, occasionally in aggregates of 2 or 3 cells. Multiseriate rays mostly 15 to 25 cells (180-280 um) wide; height very variable, range of 0.99-7.91 mm, mean 4.23 mm (sd = 2.11 mm); body of ray with procumbent cells, mostly lor 2 marginal rows of square and upright cells, at times with 4-6 marginal rows. Uniseriate-biseriate rays very rare, 15 to 20 cells high composed exclusively of upright cells. Sometimes procumbent ray cells in multiseriate rays subdivided into short cells with crystals, 1 crystal per cell. Imperforate tracheary elements with distinctly bordered pits on their radial walls.