Factors that do not contribute to a fossil organism being useful as an index fossil include its geographical distribution, as a widespread organism may not be indicative of a specific time period. Additionally, the size or appearance of the organism is irrelevant; what matters is its rapid evolution and extinction. Furthermore, the presence of the fossil in only one specific environment does not enhance its utility as an index fossil, as it should ideally be found in various settings to indicate a broader temporal range.
it must have lived through a long span of time
You have what is known as permineralization preservation when tiny spaces inside a fossil are filled in with minerals. This process can result in the fossil being preserved in great detail, often retaining the original structure of the organism.
The part of the biosphere that surrounds an organism is the environment. The environment can be small or large and has factors which include the light, temperature etc.
There are mold and cast fossils in many local creeks, streams, and/or rivers.If the original organism dissolves or decays, leaving a hollow in the rock, that is a mold.If the mold fills up with sediment which gradually hardens into the shape of the original organism, then that is a cast.Casts are copies of fossilized plants or animals. Molds are hollow impressions of the fossil.Its a Fossil.
A missing part of the fossil record is often referred to as a "fossil gap" or "gaps in the fossil record." These gaps occur due to various factors, such as the conditions needed for fossilization being rare, erosion, or the incompleteness of geological records. Such gaps can hinder our understanding of evolutionary history and the timeline of life on Earth.
it must have lived through a long span of time
A good index fossil is one of an organism that rapidly evolves and is widespread throughout a geologic time period or periods. This makes it useful in determining the age of the rock formation in which it is contained.
Organisms that are quickly decomposed by bacteria, fungi, or scavengers before they are buried can prevent them from becoming part of the fossil record. Additionally, if an organism is not buried in sediment quickly enough, the chances of it being fossilized are reduced. Lastly, factors such as being in an environment with high oxygen levels or being exposed to acidic conditions can also hinder the fossilization process.
a dinosaur footprint is a trace fossil
The type of fossil being described is a mold fossil. These fossils preserve the external shape of an organism by filling in the cavity left behind after the original organism decays. Mold fossils provide important insights into the shape and size of ancient organisms.
The surroundings and external factors impacting the organism being studied, including its environment, food sources, predators, and other interacting organisms.
An organism can become a fossil through natural mummification, where it dries out quickly and is preserved in a dry environment. Another way is through freezing, where the organism becomes frozen in ice and is preserved in a state of suspended animation.
when a fossil is in the process of being made. when a fossil is in the process of being made. when a fossil is in the process of being made.
You have what is known as permineralization preservation when tiny spaces inside a fossil are filled in with minerals. This process can result in the fossil being preserved in great detail, often retaining the original structure of the organism.
Bio gas can be useful in developing countries because it is much cheaper and easier to get a hold of than fossil fuels which are being depleted which drives up the cost.
The parts of an organism's enviroment that are living or once living and interact with the organsim are biotic factors. :)
The part of the biosphere that surrounds an organism is the environment. The environment can be small or large and has factors which include the light, temperature etc.