Paleocene fossil wood from Patagonia with storied rays and comments on the fossil record of this character

Author:

Ruiz Daniela P.12ORCID,Pujana Roberto R.1,Brea Mariana3

Affiliation:

1. División Paleobotánica, Museo Argentino de Ciencias Naturales (CONICET), Avenida Ángel Gallardo 470, C1405DJR Ciudad Autónoma de Buenos Aires, Argentina

2. Cátedra de Paleontología II, Facultad de Ciencias Naturales y Museo, UNLP, Calle 122 y 60 s/n, 1900 La Plata, Argentina

3. Laboratorio de Paleobotánica, Centro de Investigación Científica y de Transferencia Tecnológica a la Producción — Consejo Nacional de Investigaciones Científicas y Técnicas CICYTTP (CONICET-Prov. ER-UADER), España 149, E3105BWA Diamante, Entre Ríos, Argentina and Cátedra de Paleobotánica, Facultad de Ciencias Naturales y Museo, UNLP, Calle 122 y 60 s/n, 1900 La Plata, Argentina

Abstract

Summary The storied structure in wood anatomy is considered derived and highly specialized, and is present in some related families. The first records of this character are from the Cretaceous, but it is scarce in the Cretaceous and Paleocene, and apparently absent until the Eocene in the temperate Southern Hemisphere. Using standard methodology, we describe the anatomy of a fossil wood from the early Paleocene of Patagonia (Salamanca Formation). The fossil wood, assigned to a new genus and species Elizabethiaxylon patagonicum related to the Malvaceae, is characterized by its diffuse-porous wood, solitary vessels, simple perforation plates, apotracheal banded axial parenchyma, and mostly biseriate storied rays. The storied structure in this wood is one of the oldest records from Gondwana.

Publisher

Brill

Subject

Forestry,Plant Science

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