Cyanobacteria fossils can be dated back to the __________, while fossils of ichthyosaurs indicate that they lived during the __________.

Cyanobacteria fossils can be dated back to the Proterozoic Era, while fossils of icthyosaurs indicate that they lived during the Mesozoic Era.

Answered by mortnc77 | 2024-06-10

Cyanobacteria fossils are dated back to the Proterozoic Era, around 2.5 billion to 541 million years ago, while ichthyosaurs lived during the Mesozoic Era, approximately 252 to 66 million years ago. Cyanobacteria played a crucial role in oxygenating the Earth, whereas ichthyosaurs were marine reptiles that thrived in ancient oceans. These eras are significant in understanding the development of life on our planet.
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Answered by mortnc77 | 2024-12-17