Which of the following conditions must be true for a species to act as a good index fossil?
The index fossils must be the same age as the other fossils. The absolute age of the index fossil was determined by radioactive dating or another absolute method.
Which of the following are important if an organism is to become a fossil?
The conditions under which the organism died and how it was buried. … Which of the following is important if an organism is to become a fossil? Rapid burial and hard parts. Organisms with hard parts stand a good chance of being fossilized if they are_____________________.
Which of the following characteristics are necessary for a fossil to be a good index fossil choose all that apply?
A useful index fossil must be distinctive or easily recognizable, abundant, and have a wide geographic distribution and a short range through time.
Which of the following organisms would have the best chance of becoming a fossil?
The hard parts of organisms, such as bones, shells, and teeth have a better chance of becoming fossils than do softer parts. One reason for this is that scavengers generally do not eat these parts. Hard parts also decay more slowly than soft parts, giving more time for them to be buried.
What are the three characteristics of a good index fossil?
A good index fossil is one with four characteristics: it is distinctive, widespread, abundant, and limited in geologic time. Because most fossil-bearing rocks formed in the ocean, the major index fossils are marine organisms.
Why are index fossils so important?
Index fossils help scientists to determine the approximate age of a rock layer and to match that layer up with other rock layers. Fossils give clues about the history of life on Earth, environments, climate, geologic history, and other events of geological importance.
What are two kinds of fossils?
Paleontologists deal with two basic kinds of fossils: body fossils and trace fossils.
What are fossils short answer?
Fossils are the preserved remains, or traces of remains, of ancient organisms. Fossils are not the remains of the organism itself! … Bones, shells, feathers, and leaves can all become fossils. Fossils can be very large or very small.
What can fossils tell us?
By studying the fossil record we can tell how long life has existed on Earth, and how different plants and animals are related to each other. Often we can work out how and where they lived, and use this information to find out about ancient environments. Fossils can tell us a lot about the past.
Will humans be a good index fossil?
Some fossils are more useful than others in establishing the age of rocks. These are called index fossils. … It is possible that humans also will be good index fossils at some time in the distant future. Humans have distinct hard parts, and we often bury our dead.
What are 3 considerations for choosing a fossil to correlating rocks?
To be considered an index fossil, it must meet 3 criteria:
The fossilized organism must be easily recognizable. It must be easy to ID and look unique. 2. The fossils have to be geographically widespread, or found over large areas so that we can use them to match layers separated by huge distances.
Which of the following is an example of trace fossil?
Ichnofossils, also known as trace fossils, are geological records of the activities and behaviors of past life. Some examples include rock evidence of nests, burrows, footprints, and scat. These fossils are different from body fossils that preserve the actual remains of a body such as shells or bones.
What are 3 requirements for an organism to become fossil?
The organism generally must have hard parts such as shell, bone, teeth, or wood tissue; the remains must escape destruction after death; and the remains must be buried rapidly to stop decomposition. This does make the fossil record biased because animals with soft bodies are less likely to form fossils.
What is another name for a petrified fossil?
Petrified wood (from the Latin root petro meaning ‘rock’ or ‘stone’; literally ‘wood turned into stone’) is the name given to a special type of fossilized remains of terrestrial vegetation.
Where are most fossils found?
Fossils are mostly found where sedimentary rocks of the right age – which for dinosaurs is the Mesozoic – are exposed. The best places are river valleys, cliffs and hillsides, and human-made exposures such as quarries and road cuttings.