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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.
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∙ 11y ago
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∙ 15y agocooksonia was the first plant to have shoots upwards. Cooksonia were plants on land not flowers flowers came out in the cretaceous period.
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∙ 13y agotrilobites, ammonites, opabinia, pikaia, naraoia. Hope this helps!
Sarah Clark
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∙ 9y agoThe Cambrian Period saw a great diversity in invertebrate animals. These animals included sponges, trilobites, and arthropods. There were also many kinds of algae.
Sarah Clark
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∙ 15y agoSee:
http://www.ucmp.berkeley.edu/cambrian/camblife.html
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∙ 12y agonone. they still live today
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Whatever its ultimate cause the Cambrian explosion is a prime example of?
The sudden and very dramatic increase in life forms on earth (especially in the oceans) that took place during the Cambrian period of earth's evolution. Note that in this context "sudden" means "just a few million years".
Why were plants and animals extinct during the Paleogene?
they were unable to adapt to the volcanos that were underwater erupting into the oceans and so there were none
What animals lived in the Quaternary Period?
We currently live in the Quaternary, so all modern animals do, too. A few extinct animals that lived in the Quaternary include mammoths, mastodons, woolly rhinos, saber toothed cats, terror birds, giant ground sloths, etc. The first hominids evolved during the Quaternary, too.
When did the trilobites become extinct?
Quoth the wikipedia (linked below) -------------------------------------------- The last of the trilobites disappeared in the mass extinction at the end of the Permian about 250 million years ago. -------------------------------------------
What were the dominant organisms living during the carboniferous period?
The Permian period was about 280 to 248 million years ago. The dominant organisms in this time period were the amphibians because they were abundant. However, there were other organisms, such as synapsids, fish and invertebrates.
Were there herbivores during the Cambrian time period?
It is thought that most of the animals in the Cambrian Period were herbivores feeding on the Green Algae which we believe was abundant during the Period.
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).
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.
Where were most of the continents during the Cambrian period?
To the Sourthern Hemisphere
What is the cambrain explosion?
life during the early Cambrian period
Was life not very diverse during the Cambrian period?
True.
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.
During which period was Laurentia completely surrounded by passive margins?
The Cambrian
What is Cambrian?
The Cambrian is a period of time which comes after the vendian millions of years before dinosaurs it was hotter than the Sahara with no plants or animals on land only in the seas.Geologists name the different periods of the earth's development. Adam Sedgwick named the period within the Paleozoic era the Cambrian period. The Cambrian period occurred millions of years ago and represents the first geological period of this era. During this time, living organisms evolved to be more complex than the formerly known single cellular types.
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 was the latitude of north America during the Cambrian time period?
that is what i want to know
