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Amazonia Through Time: Andean Uplift, Climate Change, Landscape Evolution, and Biodiversity
It is shown that Andean uplift was crucial for the evolution of Amazonian landscapes and ecosystems, and that current biodiversity patterns are rooted deep in the pre-Quaternary. Expand
Biological evidence supports an early and complex emergence of the Isthmus of Panama
It is shown that biotic migrations across the Isthmus of Panama began several million years earlier than commonly assumed, indicating that the dramatic biotic turnover associated with the Great American Biotic Interchange was a long and complex process that began as early as the Oligocene–Miocene transition. Expand
Middle Miocene closure of the Central American Seaway
It is contended that a uniquely Panamanian Eocene detrital zircon fingerprint is pronounced in middle Miocene fluvial and shallow marine strata cropping out in the northern Andes but is absent in underlying lower Miocene and Oligocene strata; the Central American Seaway had vanished by that time. Expand
The Late Miocene paleogeography of the Amazon Basin and the evolution of the Amazon River system
Abstract On the basis of paleontological content (vertebrates and palynology) and facies analysis from river banks, road cuts, and three wells, we have assigned the uppermost levels of the SolimoesExpand
Evidence for middle Eocene and younger land emergence in central Panama: Implications for Isthmus closure
The rise of the Isthmus of Panama, linked to a number of climatic, paleoceanographic, and biological events, has been studied mostly from indirect, often distal, geochemical and biotic evidence. WeExpand
Fracturing of the Panamanian Isthmus during initial collision with South America
Tectonic collision between South America and Panama began at 23–25 Ma. The collision is significant because it ultimately led to development of the Panamanian Isthmus, which in turn had wide-rangingExpand
Explosive Radiation of Malpighiales Supports a Mid‐Cretaceous Origin of Modern Tropical Rain Forests
This case illustrates that dated phylogenies can provide an important new source of evidence bearing on the timing of major environmental changes, which may be especially useful when fossil evidence is limited or controversial. Expand
Middle Eocene rodents from Peruvian Amazonia reveal the pattern and timing of caviomorph origins and biogeography
The phylogenetic results reaffirm the African origin of South American rodents and support a trans-Atlantic dispersal of these mammals during Middle Eocene times, and further extends the gap between first appearances of rodents and primates in South America. Expand
Cenozoic Plant Diversity in the Neotropics
A good correlation between diversity fluctuations and changes in global temperature was found, suggesting that tropical climate change may be directly driving the observed diversity pattern. Expand
Arc‐continent collision and orocline formation: Closing of the Central American seaway
Closure of the Central American seaway was a local tectonic event with potentially global biotic and environmental repercussions. We report geochronological (six U/Pb LA-ICP-MS zircon ages) andExpand