Fossil age data and molecular sequences are increasingly combined to establish a
timescale for the Tree of Life. Arthropods, as the most species-rich and morphologically …

The molecular clock is the only viable means of establishing an accurate timescale for Life
on Earth, but it remains reliant on a capricious fossil record for calibration.'Tip …

Triassic igneous and sedimentary rocks exposed within the basement of the Andes were
deposited in a series of rifts, and may record the early disassembly of western Pangaea …

The Triassic was a time of diversification of the global floras following the mass-extinction
event at the close of the Permian, with floras of low-diversity and somewhat uniform aspect …

In this review, Patagonian phytogeographical patterns are analysed from a global and
evolutionary perspective that takes into account aspects from the geology, climatology and …

Plant-insect interactions are among the most common biotic relationships, both in diversity
and abundance. The fossil record reflects these associations as damage traces on the …

Until now the Doswelliidae was considered a monospecific family including Doswellia
kaltenbachi from the Late Triassic of North America. The phylogenetic position of this taxon …

Terrestrial Triassic assemblages are an important component of the heritage of Argentina,
particularly because of their diverse record of fossil vertebrates. Triassic basins from western …

The Triassic successions of western Argentina commonly show thin pyroclastic levels
intercalated within thick fluvial and lacustrine terrigenous deposits. The Potrerillos Formation …

Defecation in communal latrines is a common behaviour of extant mammals widely
distributed among megaherbivores. This behaviour has key social functions with important …