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Abundant fossil evidence did not appear in the geologic record until about?
The abundant fossil evidence appeared in the geologic record around 541 million years ago during the Cambrian period when complex organisms started to evolve. This sudden appearance of diverse life forms is known as the Cambrian explosion.
How does scientific evidence support the theory of geologic evolution?
I am a geologist and I know of no theory of "geologic evolution". "Evolution" as defined by Darwin describes the origin of species based on the survival of the fittest. This certainly can not be applied to geological processes, although life is integral to geology.
What is the difference between trace fossil and index fossil?
A trace fossil is one that merely indicates that an organism left evidence of its existence. Some examples would be burrows or footprints that appear in sedimentary rock. An index fossil is of an organism that dates to a particular time in the geologic record, the organism only appearing in a certain segment of that record. Index fossils are indicators of the age of the rock in which they are found.
Which organisms have produced the oldest fossil evidence?
The oldest fossil evidence is from single-celled organisms such as bacteria and archaea. These microorganisms have been found in rocks dating back over 3.5 billion years, providing some of the earliest known evidence of life on Earth.
Explain the evidence that supports the existence of Pangaea?
Evidence supporting the existence of Pangaea includes: Fossil evidence of similar species found on different modern continents. Rock formations and mountain ranges that match up when continents are rearranged. Paleoclimatic evidence, such as glacial deposits in regions that are now warmer. Similarities in geologic structures and ages of rocks across continents.
Abundant fossil evidence did not appear in the geologic record until what geologic era?
Abundant and diverse fossils first appeared in the Cambrian era, although there is fossil evidence throughout much of the Precambrian.
Abundant fossil evidence did not appear in the geologic record until about?
The abundant fossil evidence appeared in the geologic record around 541 million years ago during the Cambrian period when complex organisms started to evolve. This sudden appearance of diverse life forms is known as the Cambrian explosion.
When did abundant fossil evidence appearing the geologic record?
540 Million years ago
When did abundant fossil evidence first appear in the geologic record?
Abundant fossil evidence first appeared in the geologic record during the Cambrian Period, around 541 million years ago. This period is known as the "Cambrian Explosion" because it marked a rapid diversification of marine life and the emergence of many major animal groups.
What percent of geologic time is represented by abundant fossil evidence?
The planet Earth is about 4,600 million years old. Fossil evidence becomes abundant in the geological record in the Cambrian Era, which was about 550 million years ago (when hard shelled animals appeared) Therefore (550/4600)*100 = roughly 12% of Geological time contains abundant fossil evidence. However, please note that (non abundant) fossil evidence goes back about 3600 million years, (3600/4600)*100 = roughly 73% of Geologic time.
What evidence do scientist use to place events on the geologic time scale?
they use major fossil records
4. What are the three traits of an index fossil?
There are technically more than three traits and those traits are distinctive, widespread, abundant and limited in geologic time.
When did the first cyanobacteria appear?
Fossil evidence of Cyanobacteria indicates an age of up to 2.8 billion years.
What does the geologic scale measure?
It measures the age of a fossil.:)
What is the Geologic time with the poorest fossil record?
Precambrian
How paleontologists use trilobite fossil as index fossil for various geologic time period?
yeah
geologic time with poorest fossil record?
Precambrian time.
