0
The fossils of organisms that were widely distributed but only lived during a short period of time are called?
Wiki User
∙ 12y ago
They are called index fossils.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
Which is the first step in the process during the formation of molded fossils?
Organisms are buried under sediment.
What are index fossils useful for?
Because organisms that became index fossils lived only during specific intervals of geologic time, geologists can estimate the ages of rock layers based on the particular index fossils they contain.
What were the dominant organisms during the carboniferous?
Arthropods were at their largest during this period due to high oxygen levels. It´s sometimes called the Age of the Insects. Ferns and horsetails grew to the size and build of trees, too, and fossils of them are common.
What do scientists use index fossils for?
Geologists use index fossils to define and identify geologic periods.
How can fossils be used to date rocks?
Geologists look for index fossils in the sedimentary rock to help determine its age. Index fossils are of organisms that were widespread and only existed during a specific slice of geologic time. Finding an index fossil in a rock means that the rock dates to that specific slice of time.
By comparing fossils in higher sedimentary layers with fossils in lower sedimentary layers scientists can learn what?
I.which types of organisms were more common during various time periods.II.how species have evolved over time.III.the relative age of different species. there it is
Why are most fossils fossils found in sedimentary rocks?
well because organisms can be preserved in sedimentary rock mispelled
Why are sedimentary rocks the only rocks with fossils?
Fossils are the hard remnant material of living organisms and hard evidence can be found from the fossils of early phanerozoic. During the early stages of formation of the earth it is supposed to consist of Igneous rocks only. Refer to the major processes of fossilization and it is found that fossils are usually related to areas nearby streams and basins (organisms require water for survival) and hence the only form of rocks can be sedimentary. In the case of metamorphic rock the remnants cannot sustain temp. and pressure changes and deform leaving no traces.
How do the characteristics of an index fossil is useful to geologists?
Index fossils are fossilized remains of organisms that serve as convenient reference points to geologists because they were very widely distributed during a very short period. This means that, if a geologist is trying to figure out how old a certain segment of rock is, the presence of an index fossil will give him a very good idea to a pretty high level of certainty.Most index fossils are aquatic, especially mollusks. This is because (a) mollusks had shells, which are easily preserved, and (b) marine organisms generally fossilize easily because they often live on sand and so turn into sedimentary rock, which forms without volcanic activity (like igneous) or intense pressure (like metamorphic).One good example of an index fossil is Paradoxides, a species of trilobite that was distributed in seas all over the world, but only for a very small amount of time during the Cambrian Period, about 540 million years ago.
What are remains of plants and animals that were buried very quickly in sediment during floods?
fossils
How was the food distributed to the Jews during the holocost?
It was usually distributed in the form of solid copper
What was the newspaper called during the Korean War?
Perhaps you are thinking of the Stars & Stripes ... the newspaper distributed to soldiers during the Korean War. Today, that paper is published in Europe for the troops.
