Phanerozoic

How To Use Phanerozoic In A Sentence

• The record has been much deformed, reconstituted, and obliterated during the subsequent Proterozoic and Phanerozoic eons.
• The division of the Phanerozoic into chronostratigraphic divisions - eras, periods, epochs and ages - has itself evolved over a period of about 200 years.
• Evidence for life has bee found in the Archaean about 3.8 billion years ago, but life did not become abundant until the Phanerozoic.
• Originally there were only two eons, the Precambrian and the Phanerozoic.
• Because of their ability to secrete calcium carbonate, calcareous red algae have a better Phanerozoic fossil record than many other groups of algal protists.
• It seeks to achieve the precise definition of systems, series, and stages by the use of fossils within the Phanerozoic rocks.
• They are generally common microfossils in Phanerozoic marine sedimentary rocks, at least from the early Middle Ordovician onward.
• Smaller-scale inset maps will provide information on metamorphic grade of orogenic terrains and the structure of Phanerozoic sedimentary basins.
• The following table shows the three eras and eleven geological periods that comprise the Phanerozoic.
• The record has been much deformed, reconstituted, and obliterated during the subsequent Proterozoic and Phanerozoic eons.