Fossils

It is not so much the fossils themselves but the fossil record that show us that the environmental conditions have changed.

The evolution of the Earth's Biosphere (living things, the oceans, land surface and atmosphere) began about 3600 million years ago when the atmosphere and oceans had no free Oxygen in them. The first life on Earth (blue green alga and 'stromatolites) slowly produced Oxygen and these are the only fossils we find from this time. As oxygen was produced over the next 3000 million years, it caused iron to be deposited out of the sea water (forming our banded Iron ore deposits) and slowly changing the atmosphere. As the Oxygen built up more complex life forms developed and by 5-600 million years ago the fossils of hard shelled sea creatures are found. Slowly more and more oxygen was released from the sea into the atmosphere and at about 425 million years ago we begin to see the fossils of the first land plants. Animals then began to follow the plants out of the seas onto land and we see fish and amphibian fossils then came the age of the reptiles (dinosaurs) and as we get nearer to the present more and more and more varied animals are found as fossils. Thus Life CREATED the Environment and the fossils prove this. They can be in cold climates or be in hot weather. It depends what their climate is. (:

Yes. The only exceptions would be if tectonic forces either overturned the rock layers through folding or if older layers were thrust on top by a thurst fault. A thrust fault would be apparent if you see the same layers repeat.

Correlation by Fossils (index fossils) - Matching rock units of similar age on a large scale by using index (or guide) fossils (fossils that were widespread geographically and lived only a short time). Allows widely separated rocks of different composition to be correlated. Overlapping time ranges of several sets of index fossils are typically used.

Fossils are preserved traces of organisms from the past. The totality of fossils, both discovered and undiscovered, and their placement in fossil-containing rock formations and sedimentary layers (strata) is known as the fossil record. The study of fossils across geological time, how they were formed, and the evolutionary relationships between taxa (phylogeny) are some of the most important functions of the science of paleontology. Such a preserved specimen is called a "fossil" if it is older than some minimum age, most often the arbitrary date of 10,000 years ago.

You can date rock layers by radioactive dating using half-life in the igneous rock layers that contain radioactive isotopes like uranium or potassium. These isotopes decay at a known rate to stable daughter isotopes, allowing scientists to determine the age of the rock based on the ratio of parent to daughter isotopes present. Sedimentary rock layers cannot be dated directly using radioactive dating due to the possibility of contamination and the absence of radioactive isotopes in the rock itself.

Scientists can learn about the evolution and distribution of clam species throughout different time periods by studying clam fossils. Fossilized clams can also provide insight into past environments, such as water temperatures and oxygen levels, as well as help determine the age of rocks and sediment layers in which they are found. Additionally, clam fossils can offer information on past biodiversity and ecological interactions.

Radiometric dating is least useful for dating sedimentary rocks because they are formed from the accumulation of sediments, making it difficult to determine the original isotopic composition.

Carbon-14 is the best radioactive isotope for dating prehistoric human remains because it decays at a relatively slow, but measurable rate. By measuring the amount of carbon-14 left in the remains, scientists can estimate the age of the sample.

Organic tissues in an organism are typically replaced with minerals during the petrification process, forming a fossil. This process helps maintain the original shape and structure of the organism, but the organic material is essentially replaced by minerals over time.

Measuring the activity of a radioactive isotope in a sample allows scientists to determine the amount of time that has passed since the sample was formed. By comparing the current activity of the isotope to its original activity, scientists can calculate the age of the sample, a technique commonly used in radiometric dating to estimate the age of rocks, fossils, and archaeological artifacts.

The Badlands in Badlands National Park contain reptile fossils (including alligator fossils), but do not contain dinosaur fossils.

Note that "Badlands" refers to a type of geographical feature, which is not only found in Badlands National Park.

The Mesonychid fossil was found in the early 19th century, specifically in the year 1821.

Living things take in carbon from food.

In Pokemon Emerald, players can revive the Root Fossil to obtain Lileep and the Claw Fossil to obtain Anorith. These prehistoric Pokemon can be revived by taking the fossils to the Devon Corporation in Rustboro City and having them regenerated into living Pokemon.

Bones, skin, hair, and muscles can form fossils within sedimentary rocks when the remains are buried and undergo a process called fossilization. Leaves can also form fossils in sedimentary rocks through a similar process. Igneous rocks, being formed from molten magma, are less likely to preserve fossils. Plants can form fossils through a process called carbonization, where their structures are preserved in sedimentary rocks.

Common rocks found in Wyoming include sandstone, limestone, shale, and granite. Wyoming's diverse geological history has also resulted in the presence of other rocks such as basalt, gneiss, and quartzite in various regions of the state. Additionally, Wyoming is known for its abundant fossil deposits, including dinosaur bones and other prehistoric remains.

In Pokémon Ruby, Sapphire, and Emerald, you get Groudon's fossil at the Mirage Tower on Route 111 by using the Acro Bike to reach the top.

Relative dating-comparing fossils related to how old other fossils are in the same sample of rock.

If the rock has been undisturbed, the oldest rock will be at the bottom, therefore, the oldest fossils will also be at the bottom. the youngest rock will be at the top, therefore, the youngest fossils will be at the top.

Absolute Dating-When you can figure out through testing the exact age of the fossil

No, not all rocks contain fossils. Fossils form when the remains of plants or animals are buried quickly by sediment, protecting them from decay and allowing for the preservation of the organism's shape. The presence of water and minerals in the surrounding environment helps in the fossilization process by replacing the organic material with minerals over time.

A paleontologist uses items such as:

shovels

chisels

picks

brushes to brush away dirt

drills

magnifying glass

computers

fancy machinery to find out the age of the fossil, time period, calcium levels

Water to rinse the dirt off after you've brushed it would be useful too.

well to be honest they are different from each other becauce of the rock layer and other facts about the fossils and the relative age rock if notified by the fossils so anyways a fossil of plant is like a fossil but just of plant ok listen i really dont know wat im doing now so please help me

Some types of evidence of ancient life that can be preserved as fossils include bones, teeth, shells, footprints or trackways, and imprints of soft tissues. Plant material such as leaves, wood, and pollen can also be fossilized.

Knowing the relative age of a fossil helps determine its position in relation to other fossils. It does not give an exact age but provides insights into the sequence of events in Earth's history. To obtain more precise age information, techniques like radiometric dating can be used.

Suction curettage is also commonly known as vacuum aspiration or suction aspiration. It is a procedure used to remove the contents of the uterus during a medical abortion or for diagnostic purposes in cases of abnormal uterine bleeding.

Trilobites are an example of remains from a species that existed for relatively short periods of time, were abundant, and were geographically widespread. Trilobites lived from the Early Cambrian to the Late Permian period, spanning over 270 million years, and were diverse and numerous in marine environments worldwide. Their fossils are commonly found in rocks around the world.