Paleozoic era

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Related to Palaeozoic Era: Mesozoic era, Cenozoic era

Paleozoic era

The first part of the Phanerozoic eon, 509 to 248 million years ago.

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Noun

Paleozoic era - from 544 million to about 230 million years ago

Paleozoic

Permian, Permian period - from 280 million to 230 million years ago; reptiles

Carboniferous, Carboniferous period - from 345 million to 280 million years ago

Age of Fishes, Devonian, Devonian period - from 405 million to 345 million years ago; preponderance of fishes and appearance of amphibians and ammonites

Silurian, Silurian period - from 425 million to 405 million years ago; first air-breathing animals

Ordovician, Ordovician period - from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds

Cambrian, Cambrian period - from 544 million to about 500 million years ago; marine invertebrates

References in periodicals archive ?

These ancestors of spiders and crabs lived in coastal waters during the Palaeozoic era, between 541-251 million years ago.

'World's oldest eye' found in 530-million-year-old fossil

Protracted development of bioturbation through the early Palaeozoic Era. Nature Geoscience, 8, 865-869.

First description of Skolithos burrows from the Cambrian--Ordovician boundary interval of the Central Anti-Atlas, Morocco/Maroko Anti-Atlase Kambriumi--Ordoviitsiumi piirikihtides esinevate Skolithos'e kaikude esmakirjeldus

The place is full of old, tall trees, sinkholes, and dramatic karst limestone cliffs and caves that, according to our guide, park ranger Rheynan, are millions of years old, dating back to the Palaeozoic Era.