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单词 Paleozoic era
例句 Paleozoic era
This happened around 600 million years ago, at the beginning of the Paleozoic era, and accounts for the sudden abundance of marine fossils of all kinds in the record of this period. The Lives of a Cell 1974-01-01T00:00:00Z
Both tried to parse the technology from 1999, a Paleozoic era in terms of cellphones. ‘Serial’ takes the stand: How a podcast became a character in its own narrative 2016-02-08T05:00:00Z
Fossilized cells, cuticles, and spores of early land plants have been dated as far back as the Ordovician period in the early Paleozoic era. Fundamentals of Biology 2015-01-01T00:00:00Z
The Paleozoic era was dominated by marine organisms, but by the middle of the era, plants and animals had evolved to live and reproduce on land, including amphibians and reptiles. An Introduction to Geology 2017-01-01T00:00:00Z
The carbonates in the outcroppings date back 541 million years to the Paleozoic era, according to the U.S. Scientists expected thawing wetlands in Siberia’s permafrost. What they found is ‘much more dangerous.’ 2021-08-02T04:00:00Z
The belt must have been still wider when Gondwana Land was large, as it is believed to have been during the Paleozoic era and the early Mesozoic. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z
But mark my words: we’re in the Paleozoic era of consumer technology. State of the Art: Two New E-Readers Move the Plot Forward 2011-06-08T16:50:05Z
While animal diversity increased during the Cambrian period of the Paleozoic era, 530 million years ago, modern fossil evidence suggests that primitive animal species existed much earlier. Fundamentals of Biology 2015-01-01T00:00:00Z
The end of the Paleozoic era is marked by the largest mass extinction in earth history. An Introduction to Geology 2017-01-01T00:00:00Z
In places on the top of the block, at the head of Death and Avalanche Canyons, for example, are seen the inclined layers of limestone, quartzite, and shale belonging to the less ancient Paleozoic era. Grand Teton [Wyoming] National Park 2011-05-19T02:00:05.867Z
Indeed, as in North America, the submergence has decreased on the average since the Paleozoic era. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z
The next great step was the crumpling into folds and upheaval of the rocks in the Appalachian region at the close of the Paleozoic era. North America 2011-05-05T02:00:20.027Z
Cambrian , the first period of the Paleozoic era,—that of the first abundance of marine animals. Unexplored!
The Paleozoic era had two smaller mass extinctions, but these were not as large as the Permian Mass Extinction, also known as the Permian-Triassic Extinction Event. An Introduction to Geology 2017-01-01T00:00:00Z
The formation of flat-lying sandstone which covers this buried land surface is proved by its fossils to belong to the Cambrian,—the earliest period of the Paleozoic era. The Elements of Geology
The time indicated is at the close of the Paleozoic era, and after the great coal-fields extending from Pennsylvania southward to Alabama and westward to beyond the Mississippi were formed. North America 2011-05-05T02:00:20.027Z
The Paleozoic era witnessed the first appearance of vertebrate life. North America 2011-05-05T02:00:20.027Z
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更新时间:2025/1/23 20:46:55