Wiktionary
n. (mass extinction English)
Usage examples of "mass extinctions".
Teilhard de Chardin saw every step of evolution as a hopeful sign-even mass extinctions as a cause for joy-with cosmogenesis, his word, occurring when humanity became central to the universe, noogenesis as the continued evolution of man's mind, and hominization and ultrahominization as the stages of Homo sapiens evolving to true humanity.
I'm expecting mass extinctions, once the field biologists get some hard data back to us, and another spike in dieoffs once the dust clears and the temperature increase starts.
Biologists still mourned the mass extinctions of native species that had followed, the erosions and droughts and floods, but really, Miles thought, over the centuries of the Time of Isolation the fittest of both worlds had fought it out to a perfectly good new balance.
The fossil records on several planets in the Gamma Quadrant revealed mass extinctions that had taken place around the time the Ascendants had allegedly swarmed through this area of space, but evidence of such catastrophes existed even in the other quadrants of the galaxy, and had been ascribed to numerous other causes.
From Malcolm's point of view, there had been only the predictable objections: that mass extinctions were important.
The fossil record contains a number of 'mass extinctions' in which a substantial proportion of all life on Earth disappeared.
And mass extinctions would wipe out the genetic diversity the Charonians needed as raw material for their bioengineering.
From 380 to 362 million years ago, during what's now labeled the Devonian period of the Paleozoic Era, mass extinctions removed about 70 percent of life in the ocean.
A graph of mass extinctions appears to show a periodicity of about 26 million years.
There will be mass extinctions of the native plants as species are introduced from Europe and go wild.
If so, cataclysms are not responsible for mass extinctions, but rather generate new species in their wake.
They were too far above her for her to see what species they were, and the mass extinctions hadn't started until the 1970's.
So now we have mass extinctions of animals, food riots, starvations, more local wars, and unbelievable misery.
Teilhard de Chardin saw every step of evolution as a hopeful sign -- even mass extinctions as a cause for joy -- with cosmogenesis, his word, occurring when humanity became central to the universe, noogenesis as the continued evolution of man's mind, and hominization and ultrahominization as the stages of Homo sapiens evolving to true humanity.
Planetary life was inherently fail-safe: big, comforting biospheres could recover from those little course-corrections that triggered mass extinctions.