The P ermian and T riassic were key time intervals in the history of life on E arth. Both
periods are marked by a series of biotic crises including the most catastrophic of such …

Actinopterygii makes up half of living vertebrate diversity, and study of fossil members during
their Palaeozoic rise to dominance has a long history of descriptive work. Although research …

The Early Triassic vertebrate record from low paleolatitudes is spotty, which led to the notion
of an 'equatorial vertebrate eclipse'during the Smithian. Here we present articulated ray …

Actinopterygians (ray-finned fishes) successfully passed through the Permian-Triassic Mass
Extinction (PTME) and flourished in the Triassic with diverse feeding specializations and …

The brachiopod Coolkilella aredesi sp. nov. and Calytrixia piersoni sp. nov. are proposed on
the basis of specimens from the Del Salto, Río del Peñón and Agua del Jagüel formations …

Brazilichthys macrognathus is the only named actinopterygian from the Permian (Cisuralian)
Pedra de Fogo Formation of northeastern Brazil, in which it is represented by a single three …

Three genera, known by dorsal finspine, are reported from conglomeratic sandstone at the
base of the Lower Permian (Kungurian) Irati Formation (Paraná Basin) near Rio Claro, São …

We hereby describe fish material collected from the lowermost Upper Triassic continental
levels of the Chañares Formation (Campo de Córdoba and El Torcido localities). The …

Fossilized feces (coprolites) are remarkable tools for paleobiology and paleoecology
assessment. Here they are used to reconstruct the Permian interactions between organisms …

Fossil fishes from the Paraná Basin are represented by actinopterygians, chondrichthyans,
coelacanths and dipnoans. This diverseichthyofauna comprises mainly fragmentary material …