We summarize information concerning Recent and Pleistocene-Holocene Uruguayan sand dollars (Mellitidae), as well as Miocene taxa (Monophorasteridae). Recent and Pleistocene-Holocene species (Encope emarginata, Mellita quinquiesperforata, and Leodia sexisperforata) are at their southernmost limits of distribution, with only E. emarginata recorded further south than Uruguay. Lower temperatures to...

Bohra nullarbora sp. nov. is described from a partial skeleton collected from a diverse Pleistocene vertebrate assemblage preserved in Leaena’s Breath Cave, Nullarbor Plain, Western Australia. It is distinguished from its Nullarbor contemporary, B. illuminata, by having different cranial proportions, smaller cheek teeth and a relatively narrower upper premolar. It also differs in a number of po...

Baldwin Peninsula, northwest Alaska, is a middle Pleistocene push-moraine complex composed of marine, fluvial, and glaciogenic sediments. The peninsula was formed by three ice lobes emanating from the De Long and Baird mountains and the Selawik Lowlands in the southwest Brooks Range during the Anaktuvuk River glaciation . This glaciation was nearly an order of magnitude more areally extensive t...

The study proposes an inversion method applicable to observations of deglacial land uplift and tilt near the margin of a major Pleistocene ice-sheet. This information allows the determination of the cross-section of the ice-sheet and the calculation of the thickness of the lithosphere. The method is applied to the Pleistocene glaciations in Fennoscandia and Laurentia and yields similar lithosph...

Present morphology of the Mt. Wellington summit area can be interpreted in terms of a system of cryoplanation, which operated during the Pleistocene, but bas now ceased. This involved the rapid frost shattering of exposed dolerite and the removal of this and previously weathered material by mass movement over slopes as low as 30 • Periglacial processes of land reduction were probably widespread...

A sea surface temperature (SST) record based on planktonic foraminiferal magnesium/calcium ratios from a site in the western equatorial Pacific warm pool reveals that glacial-interglacial oscillations in SST shifted from a period of 41,000 to 100,000 years at the mid-Pleistocene transition, 950,000 years before the present. SST changes at both periodicities were synchronous with eastern Pacific...

For many years, the megafaunal extinctions at the end of the Pleistocene have been assumed to have affected only those species that became extinct. However, recent analyses show that the surviving species may also have experienced losses in terms of genetic and ecological diversity.

Detecting human impacts on the flora, fauna, and summer monsoon of Pleistocene Australia G. H. Miller, J. W. Magee, M. L. Fogel, and M. K. Gagan INSTAAR and Dept. of Geological Sciences, University of Colorado, Boulder, CO 80309-0450, USA Department of Earth and Marine Sciences, Australian National University, Canberra, ACT 0200, Australia Geophysical Laboratory, Carnegie Institution of Washing...

sediments of the nezam-abad area, south-east of bam have been studied for the first time. sedimentary facies are composed of thin-bedded clay, silt and fine grained sand interbedded with thin laminated limestone. chemical analysis of x-ray florescent indicates that more than 50% of sediments consist of silisium and aluminum oxide that can be used for reconstruction of environment. ninety eight ...

The southern Floridian fossil group comprises five Jenneria species, including one synonym, plus the newly described species herein, sandrae. earliest is from an uncertain date Golden Gate Member of Plio-Pleistocene and genus ended with Belle Glade Member, Bermont Formation [Chibanian Age (~750 ka)], Late Middle Pleistocene.