GEOLOGY

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EARTH SCIENCE

FOSSILS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Fossils of more than 500 trilobite species have been found in western Utah. Trilobites were marine organisms that lived millions of years ago. Most trilobites lived on the ocean floor, but some were also capable of swimming.Which inference is best based upon the given information?
A
A shallow inland sea once covered the western part of Utah
B
Wind currents carried trilobite eggs to the western part of Utah
C
Some trilobites migrated over land to the western part of Utah
D
An ancient people moved the trilobite fossils from the coast to western Utah.
Explanation: 

Detailed explanation-1: -Over 20, 000 species of trilobite have been described.

Detailed explanation-2: -Their fossilized remains are found in the rugged mountains of western Canada, the rolling plains of eastern Europe, the scorching deserts of northern Africa and the verdant hills of southern China. Indeed, trilobites can be discovered on every continent on earth where Paleozoic outcroppings exist.

Detailed explanation-3: -Trilobites are extinct arthropods. Usually, only the skeleton is found as a fossil, and is rarely complete. The skeleton covered the upper side of the body and has a head (cephalon) and a tail (pygidium) separated by a flexible, jointed thorax.

Detailed explanation-4: -Trilobites are an extinct clade of Arthropods (like crustaceans). Nothing like them exists today. They are, however, distantly related to the chelicerates clade.

There is 1 question to complete.
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