Podocarpoxylon atuelense

Name

Podocarpoxylon atuelense

Rank

Species

Original spelling

atuelensis

Generic Name

[Genus] Podocarpoxylon

Authors (Name)

Gnaedinger S.  

Authors (Pub.)

Gnaedinger S. Garcia-Massini J. Bechis F. Zavattieri A. M.  

Publication

Coniferous woods and wood-decaying fungi from the El Freno Formation (Lower Jurassic), Neuquén Basin, Mendoza Province, Argentina [2015/5]

Journal

Ameghiniana

Volume

52

Issue

4

Page number

456

Year

2015

Fossil Status

stems (wood)

Stratigraphy

Lower Jurassic

Strat. comment

El Freno Formation

Location

Cerro La Brea section, Atuel River valley, south of Mendoza province, Argentina

Paleoregion

America (South)

Data for Holotypus

Repository

Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA-PB), CCT-CONICET-MENDOZA, Mendoza, Argentina

Repository Number

IANIGLA-PB 57 (CTES-PB, 585)

Num

Figures 5–6, Tables 1–2

Pub.

Coniferous woods and wood-decaying fungi from the El Freno Formation (Lower Jurassic), Neuquén Basin, Mendoza Province, Argentina [2015/5]

Diagnosis

Woody fragments of the secondary xylem with growth rings distinct. A wood type (tracheid radial pitting) is abietinean (close to 70–81% of the separate pits: abietinoid). Pits are bordered, circular (close to100%), tracheids with predominantly uniseriate pitting (close to 83–87%), may have short sections with biseriate pitting (close to10–14%), and biseriate (close to 2–3%). Pits are separate (close to 70- 81%), mixed (close to 12-16%) or contiguous (close to 7– 14%). Biseriate pits are opposite (close to 88–9%) or rarely alternate (close to 8–12%). Cross-field pitting of the cupressoid (podocarpoid type sensu Gothan, 1905) with 1–2 pits, some has 4 pits in marginal cross-field. Radial system homogeneous, rays uniseriate and low with 2–6, 10 cells height showing a mean of 4 cells. Axial parenchyma diffuse and abundant, mostly in paired arrangement. Resin remains or organic deposits are observed, mostly in axial parenchyma and in the ray cells.