The oldest known cyanobacteria fossils are known as stromatolites and fossils have been found that date back 2.72 billion years old. More recent discoveries however suggest that cyanobacteria may date back as far as 3.5 billion years into Earth's past.
This fossil is called a index fossil. It is a species that is easily recognizable, widespread, and existed for a short period of time. By determining the age of the rock layer where the index fossil is found, geologists can establish the approximate age of the surrounding rocks.
the relative age of the rock where it was found.
Cannot be done as the Earth is much older than the oldest fossils.
No, growth rings are not typically found on living clam shells. They are commonly found on fossil clam shells and can provide information about the age and growth patterns of the clam when it was alive.
Fossils are typically found in sedimentary rock layers, which are formed from the accumulation of sediments over time. Fossils are most commonly found in the mid to lower layers of sedimentary rock formations. The specific layer in which a fossil is found depends on the age of the fossil and the geological history of the area.
Fossil evidence of Cyanobacteria indicates an age of up to 2.8 billion years.
The age of the oldest fossil on record is about 3.5 billion years old.
The oldest fossil that has been dated is approximately 3.5 billion years old.
the relative age of the rock where it was found.
This fossil is called a index fossil. It is a species that is easily recognizable, widespread, and existed for a short period of time. By determining the age of the rock layer where the index fossil is found, geologists can establish the approximate age of the surrounding rocks.
the relative age of the rock where it was found.
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You can determine the relative age of a fossil by looking at the position of the fossil in the rock layers. The closer a fossil is to the surface, the younger it is relative to fossils found deeper in the layers. To determine the absolute age of a fossil, scientists use radiometric dating techniques on the surrounding rocks to determine the age of the rock layer the fossil is found in.
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.
Cannot be done as the Earth is much older than the oldest fossils.
In general ; the deeper its found the older it is.
It is determined because in layers of rocks the fossils are found so the layers of rocks give information to the scientist about the age of a fossil so like that the relative age of a fossil is determined.