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What is the largest and most common invertebrate group?
Insects are the largest and most common invertebrate group.
What geologic period has fossils of the most primitive lifeforms?
cambrian
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 do the current landforms of the Cambrian period look like?
In the Cambrian period, the world's oceans were beginning to form because the glaciers were melting. Most of the world's land was in the Southern Hemisphere.
From what time period are most of rocks in Glacier National Park?
Most of the rock is pre-Cambrian rock.
What time period are most rocks from in glacier national park?
Most of the rock is pre-Cambrian rock.
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).
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.
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.
The appearance of the most complex and the greatest diversity of organisms occurred during what time period?
The appearance of the most complex and the greatest diversity of organisms on Earth occurred during the Cambrian Period, around 541 million years ago. This period is known as the "Cambrian Explosion" due to the rapid diversification of multicellular life forms.
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.
What is the most common animal on earth with 3 body segments that is an invertebrate?
arthropods
