answersLogoWhite

0

Levels of calcium rose in the oceans, allowing many animals to produce hard shells. Also, the first fossils of almost all animal phyla began appearing in Cambrian strata, including the Echinodermata, Arthropoda, and Chordata.

User Avatar

Wiki User

12y ago

What else can I help you with?

Related Questions

Did any organisms evolve or go extinct during the Cambrian time period?

Yes the Cambrian is regarded as the point when life of earth began to flourish (it becomes more visible/common in the fossil record).


Were there herbivores during the Cambrian time period?

Yes, there were herbivores during the Cambrian period. Some early marine organisms, such as trilobites and some primitive arthropods, are believed to have been herbivorous, feeding on algae and other organic matter present in the oceans at that time.


Why were there no plants during the Cambrian time era?

There were simple plants in the Cambrian Period(542 - 488.3Ma). Fossil algae has been found in Cambrian Rocks. Evidence of primitive algae from the Precambrian Super-Eon has also been found but exact classification has not been established. It is true that embryophytes (Plants we most recognise) did not evolve until the Ordovician Period(488.3 - 443.7Ma).


Where did all the Cambrian animals live?

During the Cambrian period, animals primarily lived in the ocean. They inhabited various marine environments such as shallow seas, reef systems, and coastal regions. Some also lived in deeper waters, but the majority of Cambrian animals were marine organisms.


During which period in the geologic time scale was there a great increase in the variety of life forms on earth?

The Cambrian Period, approximately 541 million years ago, is known as the "Cambrian Explosion" because of the rapid diversification and increase in the variety of life forms on Earth during that time. This period saw the emergence of most major groups of animals that exist today.


During what period did the first vertebrates appear?

The first vertebrates evolved during the Cambrian Explosion about 525 million years ago. The Cambrian Explosion, obviously, occurred during the Cambrian period. The Cambrian period was part of the Paleozoic era.


What is the cambrain explosion?

life during the early Cambrian period


What is the significance of the didvision between the Cambrian and PreCambrian periods?

During the Cambrian period, life began to appear on the planet.


What phylum was not present during the Cambrian period?

The phylum Cnidaria was not present during the Cambrian period. Cnidarians, which include jellyfish and corals, appeared later in the fossil record during the Ediacaran period and diversified in the subsequent periods.


Where were most of the continents during the Cambrian period?

During the Cambrian period, known as the "Cambrian Explosion," most continents were part of a supercontinent called Gondwana, situated in the Southern Hemisphere. North America and Europe were closer to the equator at this time.


What is a sentence using the word Cambrian?

This refers to a period of time during the Paleozoic Era. Here are some sentences.The Cambrian Period was the first 65 million years of the Paleozoic Era.Trilobites flourished during the Cambrian.The Cambrian was characterized by warm seas and deserts on land.


What epoch did the Anomalocaris live in?

Anomalocaris lived during the Cambrian period, which is part of the Paleozoic era. The Cambrian period occurred approximately 541 to 485 million years ago.