Search results
Results From The WOW.Com Content Network
This is a list of extinction events, both mass and minor: [1] "Big Five" major extinction events (see graphic) Period or supereon Extinction Date Probable causes [2]
The end-Cretaceous mass extinction removed the non-avian dinosaurs and made it possible for mammals to expand into the large terrestrial vertebrate niches. The dinosaurs themselves had been beneficiaries of a previous mass extinction, the end-Triassic, which eliminated most of their chief rivals, the crurotarsans.
A growing number of scientists believe a sixth mass extinction event of a magnitude equal to the prior five has been unfolding for the past 10,000 years as humans have made their mark around the ...
The Late Ordovician mass extinction (LOME), sometimes known as the end-Ordovician mass extinction or the Ordovician-Silurian extinction, is the first of the "big five" major mass extinction events in Earth's history, occurring roughly 445 million years ago (Ma). [1]
The end-Permian is the largest known mass extinction of insects; [16] [145] according to some sources, it may well be the only mass extinction to significantly affect insect diversity. [146] [147] Eight or nine insect orders became extinct and ten more were greatly reduced in diversity.
Scientists are using a UC Santa Cruz greenhouse to recreate the mass extinction that wiped out the dinosaurs. They want to learn why some species survived when so many did not.
The volcanism that occurred in the Siberian Traps resulted in copious amounts of magma being ejected from the Earth's crust—leaving permanent traces of rock from the same time period of the mass extinction that can be examined today. [23] More specifically, zircon is found in some of the volcanic rocks.
The asteroid that killed most dinosaurs 66 million years ago left behind traces of its own origin.. Researchers think they know where the Chicxulub impactor came from based on levels of ruthenium ...