Permian period


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Permian period

The last period of the Paleozoic era: 286 to 248 million years ago.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Permian period - from 280 million to 230 million years agoPermian period - from 280 million to 230 million years ago; reptiles
Paleozoic, Paleozoic era - from 544 million to about 230 million years ago
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The discovery was proven in 2018 in the Zechstein group from the Late Permian period, as well as in the Grid formation from the Eocene.
"It couples what we think was happening in the climate with the fossil record, and it does it elegantly." It took a supercomputer more than six months to simulate all the changes the volcanic eruptions are suspected of causing during the Permian period. The computer models go into remarkable detail -- simulating things like clouds, ocean currents and marine plant life -- in describing what temperatures and conditions were like on Earth.
The extinction event at the end of the Permian period 252 million years ago wiped out 96% of all marine species and 70% of land-dwelling vertebrates.
Burger's samples painted a grim picture of Earth's environment at the end of the Permian period. A sharp drop in calcium carbonate levels indicated that the oceans had become acidic.
The ancient reptiles lived during the Early Permian period and could "detach their tails to escape the grasp of predators." A new study suggests this is the oldest known example of such behavior among animals.
The Permian period which lasted between 299 to 251 million years ago was the last of the Paleozoic era.
After reviewing the principles of paleoclimatology and paleobiogeography and presenting a chronology, they discuss terrestrial tetrapod horizons in India, the Permian period: the beginnings of Gondwana sedimentation, the Triassic period: pan-Gaean world, the Jurassic period: time of the giants, the Cretaceous period, the Paleocene period, the Paleocene-Eocene transition: initial collision with Asia, the making of the Himalayan Mountains and the Tibetan Plateau, the neogene Siwalik group, and the evolution of Indian summer monsoons.
A nurse and a postman provided me with the best accounts of the creature, which I believe to be a time-displaced specimen of estemmenosuchus - a prehistoric mammal which roamed our world around 267 million years ago in the permian period.
At the close of the Permian period some 252 million years ago, more than 90 percent of all marine species and roughly 75 percent of all land species vanished.
Botanical affinities of isolated palynomorphs included in this paper indicate the presence of sphenopsids (Equisetopsids) and ferns (Osmundaceae) during the early Permian period along with gymnosperms (Cycadales, Benniettitales).
The worst was at the end of the Permian period, 250 million years ago, when perhaps 90 per cent of species were wiped out.