Protophyllocladoxylon hilarioense Vallejos Leiz, A.Crisafulli et Gnaed.

Plant Fossil Names Registry Number: PFN002690

Act LSID: urn:lsid:plantfossilnames.org:act:2690

Authors: L. Vallejos Leiz, A. Crisafulli & S. C. Gnaedinger

Rank: species

Reference: Vallejos Leiz, L., Crisafulli, A. & Gnaedinger, S. C. (2021): New records of Upper Triassic wood from Argentina and their biostratigraphic, paleoclimatic, and paleoecological implications. – Acta Palaeontologica Polonica 67: 1–10.

Page of description: 7

Illustrations or figures: figs. 5, 6, 7

Types

Original diagnosis/description

Secondary pycnoxylic wood with growth rings slightly marked. Radial tracheid pitting of the earlywood uni-biseriate. Radial tracheid pitting of the latewood uniseriate. Uniseriate pits circular, contiguous, flattened, and spaced with a tendency to abietinoid type. Biseriate pits circular, opposite and alternate, contiguous, and flattened. Cross-fields with 1–2 simple oblique to horizontal phyllocladoid oopores. Very low–medium uniseriate rays and some uniseriate rays with a short biseriate portion, 1–8 cells high. Tangential walls of tracheids with contiguous, circular and uniseriate pits.

Etymology

In reference to the location where it was found.

Stratigraphy

Triassic, Upper Triassic
Hilario Formation. Sorocayense Group.

Locality

Argentina
Hilario Creek, San Juan, Argentina, Cuyo Basin, San Juan Province.