Search results
Results from the WOW.Com Content Network
In the earlier part of the Cenozoic, the world was dominated by the gastornithid birds, terrestrial crocodylians like Pristichampsus, large sharks such as Otodus, and a handful of primitive large mammal groups like uintatheres, mesonychians, and pantodonts. But as the forests began to recede and the climate began to cool, other mammals took over.
The Okanagan Highlands had a moist mesothermal climate, with bioclimatic analysis of the region yielding estimates of a mean annual temperature (MAT) of 12.7-16.6 °C, a cold month mean temperature (CMMT) of 3.5-7.9 °C, and a MAP of 103-157 cm. [6] Clumped isotope measurements from the Green River Basin and the Bighorn Basin confirm a high ...
This category contains events which happened in the Cenozoic, a division of the geologic time scale. See geologic time scale for information about its divisions and how they relate to each other. Wikisource has original works on the topic: Cenozoic
The Eocene is not only known for containing the warmest period during the Cenozoic; it also marked the decline into an icehouse climate and the rapid expansion of the Antarctic ice sheet. The transition from a warming climate into a cooling climate began at around 49 Ma. Isotopes of carbon and oxygen indicate a shift to a global cooling climate ...
Artist's depiction of the end-Cretaceous impact eventSince the 19th century, a significant amount of research has been conducted on the Cretaceous–Paleogene extinction event, the mass extinction that ended the dinosaur-dominated Mesozoic Era and set the stage for the Age of Mammals, or Cenozoic Era.
After the intensification of monsoon climate and erosion, increased sediment supply enhances vertical duplexing. The topography is therefore further increased. Such increase in topography sustains the South Asian monsoon system and high erosional rate and maintains positive feedback mechanisms. Slab break-off occurred.
Climate history over the past 500 million years, with the last three major ice ages indicated, Andean-Saharan (450 Ma), Karoo (300 Ma) and Late Cenozoic. A less severe cold period or ice age is shown during the Jurassic-Cretaceous (150 Ma). There have been five or six major ice ages in the history of Earth over the past 3 billion years.
The Late Cenozoic Ice Age falls within the Cenozoic Era which started 66 million years ago. The Cenozoic Era is part of the Phanerozoic Eon which started ~538.8 million years ago. ^ a b In standard nomenclature the Pleistocene Epoch lasts from 2.58 Ma to 11.7 ka and the Holocene epoch lasts from 11.7 ka to present.