Eocene aridity in southwestern Africa: timing of onset and biological consequences

  title={Eocene aridity in southwestern Africa: timing of onset and biological consequences},
  author={M. H. L. Pickford and Brigitte S{\'e}nut and Helke Mocke and C{\'e}cile Mourer-Chauvir{\'e} and Jean Claude Rage and Pierre Mein},
  journal={Transactions of the Royal Society of South Africa},
  pages={139 - 144}
The Neogene history of the Namib Desert is reasonably well understood, thanks to the presence of abundant sediments and fossils in Namaqualand, the Sperrgebiet and the Namib-Naukluft Park. Hyper-arid desert has existed along the west coast of Southern Africa since the Early Miocene. It has been demonstrated on the basis of stable isotope studies of struthious eggshells and mammalian dental enamel, that throughout the Neogene winter rainfall regime occurred in the south and summer rainfall… Expand
Shaping of modern southern African biomes: Neogene vegetation and climate changes
Long-term trends in climate, hydrology and geomorphology contributed to the formation of the current biomes of southern Africa. The Neogene terrestrial fossil record is patchy, due to theExpand
Cenozoic deformation and geomorphic evolution of th e Sperrgebiet (Southern Namibia)
The Sperrgebiet is located along the coast of Nam ibi , bordered in the east by the Great Escarpment of the Southern African Plateau. The Cen ozoic evolution of the coastal plain as a consequence ofExpand
Climate control on Early Cenozoic denudation of the Namibian margin as deduced from new thermochronological constraints
Abstract The processes that control long term landscape evolution in continental interiors and, in particular, along passive margins such as in southern Africa, are still the subject of much debateExpand
Cenozoic deformation of the South African plateau, Namibia: Insights from planation surfaces
Abstract Passive margins and associated inland areas display complex vertical displacements that have been abundantly described offshore but much less so onshore due to erosion. Planation surfacesExpand
The Making of the South African Landscape
  • J. Knight
  • Geography
  • World Regional Geography Book Series
  • 2018
The landscapes of South Africa reflect the impacts of tectonics and climate on the land surface, resulting in weathering, erosion and deposition, and the shaping of distinctive landforms in differentExpand
Latest Early-early Middle Eocene deposits of Algeria (Glib Zegdou, HGL50), yield the richest and most diverse fauna of amphibians and squamate reptiles from the Palaeogene of Africa
HGL50 is a latest Early-early Middle Eocene vertebrate-bearing locality located in Western Algeria. It has produced the richest and most diverse fauna of amphibians and squamate reptiles reportedExpand
Bothriogenys (Anthracotheriidae) from the Bartonian of Eoridge, Namibia
Until recently Palaeogene anthracotheres of Africa were known only from Eo-Oligocene localities in Northern Africa, notably the Fayum, Egypt, and Lokone, an Oligocene locality in Kenya. The discoveryExpand
New CO isotopic data on supergene minerals from the Skorpion and Rosh Pinah ore deposits (Namibia): Genetic and paleoclimatic constraints
Abstract Skorpion and Rosh Pinah Zn-(Pb) deposits are hosted in Neoproterozoic rocks that are part of a volcano-sedimentary sequence within the Gariep Belt of southwest Namibia. Skorpion is theExpand
The Evolution of Regional Species Richness: The History of the Southern African Flora
It is suggested that several of the most species-rich regions may harbor several complex radiations, which accumulate diversifying lineages over a long time, spawn daughter radiations on other continents, and become powerhouses of global-biodiversity generation. Expand
New phiomorph rodents from the latest Eocene of Egypt, and the impact of Bayesian “clock”-based phylogenetic methods on estimates of basal hystricognath relationships and biochronology
The results of this analysis reconstruct a rapid latest Eocene dwarfing event along the lineage leading to Birkamys, which allows paleontologists to move beyond vague and assumption-laden “stage of evolution” arguments in biochronology to provide relatively rigorous age assessments of poorly-constrained faunas. Expand


Neogene desertification of Africa
Abstract Throughout the Neogene, the faunas and floras in Africa recorded global climatic changes. We present an overview of Neogene desertification in Africa by tracing stable isotopes in eggshellsExpand
Eocene initiation of Nile drainage due to East African uplift
Abstract The Late Eocene and Early Oligocene sedimentary succession in the Fayum, Egypt records the progressive development of northerly flowing Nile-type African drainage. New biostratigraphicExpand
Southern Africa: a cradle of evolution.
It is likely that the early onset of arid biotopes in the Namib arose well before they occurred anywhere else in Africa, and started a long period of adaptation to semi-arid, arid and hyper-arids conditions, well removed from similarBiotopes in other parts of the world. Expand
Neogene climate change and emergence of C 4 grasses in the Namib, southwestern Africa, as reflected in ratite 13 C and 18 O
Abstract Stable light isotopes in ratite eggshells have been shown to be reliable indicators of shifts in climate and environmental conditions in the past. Here, we show that δ 18 O and δ 13 C valuesExpand
Global and African Regional Climate during the Cenozoic
The last 65 Ma of Earth’s history, the Cenozoic, has been a time characterized by significant climate change. Major global changes included massive tectonic reorganization, a reduction in atmosphericExpand
Amphibians and squamates from the middle Eocene of Namibia, with comments on pre-Miocene anurans from Africa
Abstract Three middle Eocene localities (Silica North, Silica South, Black Crow) recently discovered in Namibia have produced terrestrial faunas that rank among the few known from the period ofExpand
Chronology of Fluctuating Sea Levels Since the Triassic
An effort has been made to develop a realistic and accurate time scale and widely applicablechronostratigraphy and to integrate depositional sequences documented in public domain outcrop sections from various basins with this chronostratigraphic framework. Expand
The Oldest and Youngest Records of Afrosoricid Placentals from the Fayum Depression of Northern Egypt
Tenrecs (Tenrecoidea) and golden moles (Chrysochloroidea) are among the most enigmatic mammals alive today. Molecular data strongly support their inclusion in the morphologically diverse cladeExpand
Cenozoic Mammals of Africa
This magnificent volume is a clear and comprehensive review of the African mammalian fossil record over the past 65 million years and is an essential resource for anyone interested in the evolutionary history of Africa and the diversification of its mammals. Expand
Zegdoumyidae (Rodentia, Mammalia), stem anomaluroid rodents from the Early to Middle Eocene of Algeria (Gour Lazib, Western Sahara): new dental evidence
The Palaeogene fossil record of rodents in Africa is very poor compared to that of North America or Eurasia. Despite this, Africa has long appeared to be a centre of adaptive radiation for twoExpand