Abstract
The Triassic paleofloras of Argentina are mainly known for their vegetative elements. During the last decade, several contributions have focused on the study of Triassic reproductive structures. Here, we provide new information on reproductive structures recovered from two Triassic units from the central-west of Argentina: the Agua de la Zorra Formation (Cuyana Basin) and the Los Rastros Formation (Ischigualasto-Villa Unión Basin). These specimens had been described in previous contributions, however, the taxonomic assignment of the materials remained undetermined. In this work, a redescription of the materials is provided, allowing the taxonomic assignment of the specimens. The Agua de la Zorra Formation female reproductive structures were assigned to Matatiella sp. (Matatiellaceae) and to Rissikiostrobus reductus (Podocarpaceae). The female strobilus specimen registered in the Los Rastros Formation was assigned to the genus Umkomasia (Umkomasiaceae). This contribution represents a step forward to a better understanding of the reproductive structures for the Triassic of Gondwana. Keywords: Matatiella, Rissikiostrobus, Umkomasia, Gondwana, Argentina.
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