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Prior to the Cambrian life was small and simple. In the Cambrian Period, prodigious change occured, all in the oceans, as the land remained barren. Except for enigmatic forms, all modernanimal phylawith a fossil record, except bryozoa, are represented in the Cambrian. Because some life became mineralized, the possibility of fossil formation greatly increased. Some phyla not represented in the Cambrian fossil record are nonetheless believed to have first appeared during this first period of the Paleozoic Era. Many extinct phyla with unknown relationships to other animals also appeared in the Cambrian. The ostensibly sudden appearance of very diverse faunas over a period of no more than a few tens of millions of years is called theCambrian Explosion. A unique aspect of Cambrian is prevalence of lagerstätten, fossil sites exhibiting exceptional preservation, including preservation of soft tissue parts. The lagerstatten are paramount to science's understanding of the evolutionary origins of complex early organisms that contained the genetic building blocks of life on earth today.
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What is the time period era Cambrian where hard shelled fossils appeared?
Pre-cambrian
What period contains the first fossils of land plants?
Cambrian period
What geologic period has fossils of the most primitive lifeforms?
cambrian
What two characteristics of early animals explain the scarcity of animal fossils older than the Cambrian Period?
The lorax ;)
What period came after the Cambrian period?
Ordovician .
What is the time period era Cambrian where hard shelled fossils appeared?
Pre-cambrian
What period contains the first fossils of land plants?
Cambrian period
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.
What shelled creatures developed in the Cambrian Period leaving behind excellent fossils?
Trilobite
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 was eatting the jellyfish in the Cambrian period?
in the fossils it is very hard to find evidence of the prey. A big predator was a shunyan so that is most likely to be the predator.
The first fossils of land plants and animals are found in rocks from the?
Cambrian Period Actually the correct answer to this question is the "Pennsylvanian 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 two characteristics of early animals explain the scarcity of animal fossils older than the Cambrian Period?
The lorax ;)
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.
Why is the Cambrian period a key period in the geologic record?
Because it disproves evolution. Lots of fossils suddenly appearing of fully formed animals. Points to the creator God.
