Abstract

BAEZ, Johanna; CRISAFULLI, Alexandra; MOYANO, Sebastián  and  HERBST, Rafael. Maderas neógenas de Cerro Pampa, Catamarca, Argentina. Rev. Mus. Argent. Cienc. Nat. [online]. 2018, vol.20, n.2, pp.197-204. ISSN 1853-0400.

For the first time, Angiosperm woods of Fabaceae from Cerro Pampa locality (Catamarca) are described. Stratigraphically, these woods come from the sediments of the Chiquimil Formation that belong to Santa María Group. The Chiquimil, San José, Las Arcas, Andalhuala, Corral Quemado and Yasyamayo formations integrate Santa María Group (Mio-Pliocene). The Chiquimil Formation is composed of small volcaniclastic sandstones yellowish-gray, green and brown limolites and mudstones in alternating layers. One of the fragments presents characters that match with Paraalbizioxylon Martínez. This genus has been cited for Tiopunco, Río Agua Verde and Corral Quemado localities from the same Formation. However, is presented in Neogene sediments of Termas de Río Hondo (Santiago del Estero). Another wood shows affinity with Menendoxylon Lutz. The presence of not very large solitary vessels (less susceptible to embolism), multiple short, grouped, and simple perforation plates are characters that contribute to water security in hot and seasonally dry climates.

Keywords : Anatomy; Fabaceae; Chiquimil Formation; Late Miocene.