Question

task: fossils
activity 1 of 4
how long ago were dinosaurs walking the earth? around 240 million years ago! paleontologists determined this due to the discovery of a myasasaurus parringtoni fossil in 1930 in the country of tanzania. the myasasaurus parringtoni set the record for the oldest dinosaur fossil ever discovered. (adapted from national geographic, 2012)
in what type of rock are myasasaurus parringtoni and other fossils most commonly found?
a. sedimentary rock
b. igneous rock
c. metamorphic rock
d. fossil rock

Explanation:

Sedimentary rocks are formed from the accumulation of sediments. Fossils are often found in sedimentary rocks because the processes that form these rocks (such as deposition of sediments in layers) can preserve the remains of organisms. Igneous rocks form from molten magma or lava and the high temperatures would destroy most organic material. Metamorphic rocks form under high - pressure and high - temperature conditions which also tend to destroy fossils. There is no such thing as "fossil rock" as a distinct rock type in the geological classification.

Answer:

A. Sedimentary rock