The _____________________ is the era of current time
The break up of the supercontinent ___________ occured during the Mesozoic era
Many ancient fossils from the Precambiran era are preserved in a hard, dense chemical sedimentary rock called
_________________ were the dominant plants of the Mesozoic era
During the Cenozoic era __________ replaced the gymnosperms as the dominant land plants
List the three types of geological unconformities
What conditions are important in determining whether an organism will be preserved as a fossil
Which is a NOT a characteristic of an index fossil
What are the three eras of the Phanerozoic era?
Which is NOT an advantage of hard parts, such as shells, for animals that possess them?
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