The geological time scale indicates the order of Eras to be Cenozoic as the most recent , the middle Era is the Mesozoic , with dinosaurs as the major group , and the earliest Era being the Paleozoic . Consider a hillside of rock that surfaces in your backyard that is identified as dating back to the Mesozoic Era . What is possible ?
Select one :
a . Fossils from all other strata can still be found underneath if you dig far enough .
b . All periods of fossils had to be laid down in the backyard but higher ones were eroded away .
c . Fossils were mainly deposited when your backyard was sediment , so many layers might be missing , but any layer from Cenozoic to Paleozoic might be found .
d . Fossils were mainly deposited when your backyard was sediment , so many layers might be missing , but any layer from earlier Mesozoic through Paleozoic might be found .
e . Only one layer of fossils can be found at any site .
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Question 14