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During the Ordovician period, the first land plants evolved, as well as the first jawless fish, jawed fish, and arthropods like trilobites. This period also saw the emergence of the first coral reefs.

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1y ago

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Earth's first vertebrates appeared during this period?

No, the first vertebrates evolved long before the Mesozoic. The first vertebrates, small jawless fish, evolved around 520 million years ago. Land animals had even evolved long before the Mesozoic Era.


What moved toward the shoreline and became the first plants during the Ordovician period?

Algae and other primitive plant-like organisms were the first plants to move toward the shoreline during the Ordovician period. These early plants played a crucial role in colonizing the land and paving the way for more complex plant species to evolve later on.


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).


Dinosaurs evolved first in the?

Dinosaurs first evolved 231.4 million years ago in Pangaea. This was during the beginning of the Mesozoic era, in the Triassic period.


When did plants evolve?

Plants in the sea evolved about 3,600 million years ago. The first algal scum on land about 1,200 million years ago, The first first land plants appeared around 450 million years ago in the Ordovician period.


How long ago did the first land plants appear?

The first land plants appeared around 450 million years ago during the Ordovician period. This marked a significant evolution in plant life, transitioning from aquatic environments to terrestrial habitats.


What time period did graptolites live?

Graptolites first appeared in the Cambrian Period, 545-490 million years ago (mya), and evolved rapidly during the following Ordovician Period (490-434 mya) when the greatest variety of different forms lived. They suffered a major decline in the Silurian (434-410 mya) and only a few forms lasted into the Devonian. They finally became extinct during the Carboniferous Period, about 315 my ago.


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.


Which period came first the Ordovician or the Carboniferous?

The Ordovician period came first. It started 485.4 million years ago and finished 443.8 million years ago. Then came the Silurian and Devonian periods, followed at 358.9 million years ago by the Carboniferous.


When did plants first colonize land?

In the paleozoic, more specifically the Silurian period. Liverworts had evolved by 472 million years ago, putting the very earliest land plants closer to the end of the Ordovician than at the beginning of the Silurian.


When did plants first appear on land or sea?

Both. The generally accepted idea is that life first evolved in the sea. Insects, fish with bony fins and rudimentary lungs (adapted air bladders) and plants eventually left the water to colonize land. Life in both realms continued to adapt to their evironments over millions of years to produce the life that we see today.


What is the age of fishes and 1st amphibians?

The Permian period (280 to 248 million years ago) is known as the "The Age of Amphibians," because during the Permian, amphibians were abundant. I really didn't see anything as far as when the very first amphibians appeared. I would think they became dominant on land very quickly since they were the first land animals and had very little competition for food.