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What is the difference between the Cambrian and preCambrian periods?
The difference between The differeence between the Cambrian and Pre-Cambrian is that the Cambrian fossils are ones of hard shell creatures because of thee evolved predators. The difference between Cambrian and Pre-Cambrian is that the Cambrian fossils are ones of hard shell creatures because of the evolved predators.rian fossils Cambrian and Pre-Cambrian is that the Cambrian fossils are ones of hard shell creatures because of the evolved predators.
What geologic period has fossils of the most primitive lifeforms?
cambrian
When did large numbers of fossils first appear in the geologic record?
Large numbers of fossils begin to appear around 530 million years ago. It is called the Cambrian Explosion, because it occurred in the Cambrian period. The Cambrian period was the first part of the Paleozoic era.
Fossils of fish appeared approximately 500 mya during the?
Cambrian
What period contains the first fossils of land plants?
Cambrian period
What does the term Cambrian Explosion mean?
The sudden appearance of most of the major animal phyla within the fossils early in the Cambrian period. This caused a sudden diversification of life.
What lived in the Cambrian?
Some of the unusual animals that lived in the sea 500 million years ago thrived tens of millions of years later than previously known, a treasure trove of fossils in Morocco has revealed. The fossils prove that the famously bizarre creatures of the Cambrian (542 million to 488 million years ago) didn't die out at the end of that period - something that fossil hunters had suspected, but could not back up with evidence until now.
What is the index fossil of the Cambrian?
Trilobites are one of the index fossils commonly found in Cambrian rock layers. These ancient arthropods lived in the seas during the Cambrian period and are used by geologists as markers for dating rocks from that time period.
Why are fossils before the Cambrian period rare?
Fossils before the Cambrian period are rare primarily due to the lack of hard-bodied organisms, as many early life forms were soft-bodied and did not preserve well. Additionally, before the Cambrian explosion, the majority of life existed in simple microbial forms, which left little to no fossil record. The geological processes of erosion and sedimentation also contributed to the loss of older fossils. As a result, the Cambrian period marks a significant increase in the diversity and complexity of life, leading to a more abundant fossil record.
How was fossils developed?
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When did presumed animal fossils first appear?
The presumed animal fossils first appeared during the Archaean Cambrian period. There is no clear indication why they appeared this late into history.
What is the time period era Cambrian where hard shelled fossils appeared?
The Cambrian period, which lasted from approximately 541 million years ago to 485 million years ago, is known for the sudden appearance of diverse hard-shelled fossils. This period marked the rapid diversification of marine life and the emergence of many new forms of life in Earth's oceans.
