The Antarctic Peninsula is considered to be the last region of Antarctica to have been fully glaciated as a result of Cenozoic climatic cooling. As such, it was likely the last refugium for plants and animals that had inhabited the continent since it separated from the Gondwana supercontinent. Drill cores and seismic data acquired during two cruises (SHALDRIL I and II) in the northernmost Penin...

The phylogenetic position of tarsiers relative to anthropoids and Paleogene omomyids remains a subject of lively debate that lies at the center of research into anthropoid origins. Omomyids have long been regarded as the nearest relatives of tarsiers, but a sister group relationship between anthropoids and tarsiers has also been proposed. These conflicting phylogenetic reconstructions rely heav...

The accretion of the Indian subcontinent to Eurasia triggered a massive faunal and floral exchange, with Gondwanan taxa entering into Asia and vice versa. The traditional view on the Indian-Asian collision assumes contact of the continental plates during the Early Eocene. Many biogeographic studies rely on this assumption. However, the exact mode and timing of this geological event is still und...

The timing of the development of the East Asian monsoon in the geologic past is critically important for paleoclimatological studies, yet few quantitative data are available. Based on palynomorphs from six formations, supplemented by leaf fossils from one of these formations in Fushun, northeastern China, we present a quantitative estimate of the evolution of precipitation in this area during t...

The greenhouse-to-icehouse climate transition from the Eocene into Oligocene is well documented by sea surface temperature records southwest Pacific and Antarctic margin, which show evidence of pronounced long-term cooling. However, identification a driving mechanism depends on better understanding whether this cooling was also present in terrestrial settings. Here, we semi-continuous record sp...

[1] Geochronology of fluvial deposits can be used to characterize provenance, the paleotopography of sediment source regions, and the development of regional drainage systems. We present U‐Pb and (U‐Th)/He ages of detrital zircon grains from Eocene gravels preserved in several paleoriver systems along the western flank of the central and northern Sierra Nevada. These ages allow us to trace the ...

Jones and Ewing (1) have presented seismic profiler data from the Bay of Biscay which allows a 120 anticlockwise rotation of the Iberian peninsula between Eocene and Middle to Upper Miocene times. They refer several times to the fact that this va'ue is appreciably less than a rotation of 220, which they believe resulted from our paleomagnetic study of the Lisbon Volcanics (2). We must point out...

Australian Eocene-Oligocene Ostracoda have been little reported hitherto, this paper representing the first substantial taxonomic study. The 80 species which we identified came from Late Eocene Gull Rock Member of Blanche Point Formation in Willunga Embayment, South Australia (16 species) and lower fossiliferous bed Oligocene Angahook at Bells Headland, Victoria (70 species); only 6 are common ...

Changes in fire ecology during warm and cold periods the geological past are important because of their effects on terrestrial ecosystems global carbon cycle. We examined charcoal concentrations Erden Obo section Inner Mongolia to reconstruct evolution wildfire relationship regional vegetation from Late Paleocene through Early Oligocene. Our data show that frequency were relatively high end beg...