Science and Technology Production
Article
Authorship
RUFFO REY, LAUTARO JULIÁN
;
Balarino, M. Lucía
;
Gutiérrez, Pedro R.
;
Toledo, Marcelo
Date
2026
Publishing House and Editing Place
Wiley
Magazine
Papers in Palaeontology
- ISSN 2056-2799
Wiley
Wiley
ISSN
2056-2799
Summary
Information provided by the agent in
SIGEVA
The Cerro de Las Cabras Formation preserves one of the richest triassic palynofloras in southwestern Gondwana, although detailed studies have focused only on its type section. To fill this gap, we performed a palynological study in the Estancia La Obligación area and contrasted findings with Potrerillos locality. This study incorporates 6 genera and 28 new species of palynomorphs, raising the total diversity of the unit to 102 genera and 203 species. Assemblages are largely dominated by ...
The Cerro de Las Cabras Formation preserves one of the richest triassic palynofloras in southwestern Gondwana, although detailed studies have focused only on its type section. To fill this gap, we performed a palynological study in the Estancia La Obligación area and contrasted findings with Potrerillos locality. This study incorporates 6 genera and 28 new species of palynomorphs, raising the total diversity of the unit to 102 genera and 203 species. Assemblages are largely dominated by non-striate bisaccate pollen, while striate and monosulcate pollen appear in lower and increasing frequencies, respectively; spore abundance, though limited, is notable in the lower stratigraphic levels. The species accumulation curve indicates substantial remaining potential for the discovery of new palynotaxa. Rarefaction analysis supports overall comparability among assemblages, despite observed differences in diversity patterns and slight variations in slope. The stratigraphic arrangement of palynological assemblages suggests a possible temporal control on their taxonomic composition; however, taxonomical differences among localities hinder reliable biostratigraphic correlation. The common presence of typical european taxa and joint occurrence of other palynostratigraphic markers from elsewhere, most of them already recorded in the type section, constrains the age of the unit in Puesto La Obligación locality to the upper Anisian–lower Ladinian.
Show more
Show less
Key Words
PALYNOLOGYEUROPEMIDDLE TRIASSICPALYNOSTRATIGRAPHYSOUTHWESTERN GONDWANA