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Examination of the fossil record shows a general tendency of organisms to become increasingly more complex through geologic time. This finding supports the theory that living things have undergone?
LernJergitw7473
Species evolve over time. Some times it is rather slow and sometimes rather fast.
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What is a important characteristic of a index fossil?
to place events on the geologic time scale
What type of dating would be used to determine the age of rocks by using the fossil?
By using the geologic time scale. Certain organisms are only found during certain times and if a fossil of one of these organisms is found then you can determine the relative age of the fossil.
What is the largest subdivision of geologic time?
The longest in geological time is an Eon eg. Archeozoic Eon . Edit: there is also the supereon, which is usually composed of 2-3 eons.
Abundant fossil evidence did not appear in the geologic record until what geologic era?
Abundant and diverse fossils first appeared in the Cambrian era, although there is fossil evidence throughout much of the Precambrian.
To what geologic time frame do the fossils from Thomas Farm belong?
Miocene
What is a palaeopolyploidization?
A palaeopolyploidization is the development of polyploid organisms in the geologic past.
When did organisms that formed index fossils?
Short spans of geologic time
What geologic period has fossils that closley resemble organisms living today?
Tirtiary
What is the remains of organisms preserved by geologic process?
The remains are called fossils.
How is fossil fuel found?
Through examination of an area's geologic formations, core sampling, well drilling information, and other techniques.
What is the definition of relative age?
The geologic age of fossil organisms, rock, or geologic features or events defined relative of each other.
How do paleontologist use trilobite as index fossil for various geologic periods?
Trilobites were rapidly evolving and widespread marine organisms that spanned a number of geologic time periods. Certain types of trilobites only appeared in specific segments of geologic time; therefore, when one of these trilobites is found, you can be certain that the rock layer it is found in is of a certain geologic age.
How paleontologists use trilobites fossils as index fossils for various geologic time periods?
Trilobites were rapidly evolving and widespread marine organisms that spanned a number of geologic time periods. Certain types of trilobites only appeared in specific segments of geologic time; therefore, when one of these trilobites is found, you can be certain that the rock layer it is found in is of a certain geologic age.
What is the Application of sequence stratigraphy?
Depositional environments, geologic ages, and sometimes catastrophic event ages can be determined by a careful examination of the individual strata in sedimentary rock.
How do we separate the geologic time scale into eras?
The main periods of geologic time are eons. Then eons are divided into eras. All these divisions are done using geological strata. That is, layers of earth or stone, etc. that represent periods of some kind of similar behavior on the earth.
How do paleontologist use trilobites as index fossils for various geological time periods?
Trilobites were rapidly evolving and widespread marine organisms that spanned a number of geologic time periods. Certain types of trilobites only appeared in specific segments of geologic time; therefore, when one of these trilobites is found, you can be certain that the rock layer it is found in is of a certain geologic age.
Diffrenciate geologic time with geologic column?
Geologic column is an ordered arrangement of rock layers that is based on the relative age of the rocks. Geologic time is the time IN the geologic column.
