Which one of the following is an indicator of an index fossil?
A useful index fossil must have a distinctive or easily recognizable form, be abundant, and have a broad geographic distribution with a limited time span. Index fossils provide the basis for defining geologic boundaries and for the correlation between strata.
Which one of the following is an important characteristic of an index fossil questionlet?
Which one of the following is an important characteristic of an index fossil. This organism only lived for a short period of geologic history. The presence of sedimentary layers can provide important clues about the environmental conditions at the time that the sediments were formed.
What is an example for an index fossil?
Index fossils can be found in a variety of fossil types that are widely distributed and have a short time span. Index fossils can be found in the following examples: Ammonites were abundant during the Mesozoic Era to 65 Mya), but they were extinct after the Cretaceous period.
Which one of the following is an essential characteristic for an index fossil group?
Explanation. The index fossils can be used to determine the relative age of rock layers and the fossils that are found within them. They have four main characteristics. They are rare, plentiful, distinctive, and only appear in limited geologic times.
Are trilobites End. cockroaches, or are they different?
The comparison is justified, as the anatomical structure of trilobites resembles cockroaches. They were not insects, and they had three longitudinal body segments (or lobes), which is why the name. The trilobite fossil record in the northern hemisphere is extremely rich.
Where is trilobite found in the world?
Their fossilized remains can be found in rugged mountains in Canada, the rolling prairies of Eastern Europe, and the scorching deserts that are northern Africa. Trilobites can be found on any continent where Paleozoic outcroppings are present.
What is the largest known trilobite?