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In what Era did the first land dwelling organisms appear?
the paleozoic era
Modern squids descended from what type of early Paleozoic organisms?
trilobites.
What organism dominated the paleozoic era?
It's not much of the organisms that dominated the paleozoic era, it's the species of animals. Alot of the larger reptiles and early ancestors of dinosaurs conquered and dominated the paleozoic era.
What era did simple organisms such as stromatolites live in marine ecosystems?
paleozoic ERA
What organisms died out during the Paleozoic era?
Alot! 96% of marine organisms did not make it past the Paleozoic era; and aproximatly 70% of land organisms did not make it either. Generally, Some comonly known organisms that did not make it were things like Trilobites, Graptolites, alot of Bryozoa, Horn Corals (Rugosa), and many more.
What is the Difference between Precambrian rocks and Paleozoic rocks?
Paleozoic rocks contain fossils while Precambarian rocks had no fossils since at that time there was only single celled organisms.
How did earth's organisms change during the first period of Paleozoic era?
increased oxygen in the atmosphere caused the extinction o many single-celled organisms.
What is an fact about the paleozoic era?
There are so many facts about the Paleozoic era. This was the time when the explosion of different forms of life. New species of organisms were formed during this era which started over 500 million years ago.
Which group of organisms some of which were preserved as fossils in early Paleozoic rocks are still in existence today?
it should be brachiopods
What shaded area of the graph best represents the percentage of marine organisms that became extinct at the end of the Paleozoic?
The area that best represents it
When oxygen- breathing organisms first thrived?
The Paleozoic era was the era when oxygen-breathing organisms first thrived.
What happened in the Paleozoic age?
The Paleozoic era was an age where Earth's diversity is believed to have greatly multiplied, with ocean animals coming out onto land. Massive forests with primitive plants dominated the earth's surface and dinosaurs possibly roamed around. The Paleozoic era ended with a mass extinction of many of these organisms and life on land was slow to recover.
