The Triassic is bounded by two of the most severe biotic crises, but nevertheless this time was, for bivalves, both a recovery and a diversification period, and a moment to fully exploit some of their evolutionary novelties. ...

Late Middle Triassic to early Late Triassic insects from Argentina have been previously described from the Bermejo and Cuyana Basins where they have been recovered from the Ischichuca‐Los Rastros and Potrerillos‐Cacheuta ...

The Triassic period witnessed a great diversification of lineages, recovering from one of the worst extinction events known in Earth’s history. Therapsids, the lineage that includes mammals as the only living members, ...

Pisanosaurus mertii was originally described on the basis of an incomplete skeleton from the early Late Triassic (Carnian)of northern Argentina. It is consistently regarded by most authors as a very basal ornithischian, ...

The study of fossilized footprints and tracks of dinosaurs and other vertebrates has provided insight into the origin, evolution and extinction of several major groups and their behaviour; it has also been an important ...

The Brachyopoidea is a group of Mesozoic temnospondyls with flat, parabolic skulls that were recently reviewed and considered to include Brachyopoidea and Chigutisauridae (Warren and Marsicano, 2000; Yates and Warren, 2000, ...

The Late Triassic/Early Jurassic boundary is marked by a mass extinction event which had an important effect on the marine benthic communities on a global scale. In the Andean region of South America, however, the impact ...

The salle Grylloblattidae or Grylloblattodea order (extant representatives are referred to as ‘living fossils’ and have relictual distributions) is one of the least diverse extant insect groups (with 29 species and five ...