Hypernym

era 2

noun

a major division of geological time; an era is usually divided into two or more periods

Part_meronym

Proterozoic 1

noun

from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms

Siderian 1

noun

the first geologic period in the Paleoproterozoic Era that lasted from 2500 to 2300 million years ago.

Rhyacian 1

noun

The Rhyacian is the second geologic period in the Paleoproterozoic Era and lasted from 2300 to 2050 million years ago.

Orosirian 1

noun

The Orosirian is the third geologic period in the Paleoproterozoic Era and lasted from 2050 to 1800 million years ago.

Statherian 1

noun

The Statherian is the final geologic period in the Paleoproterozoic Era and lasted from 1800 to 1600 million years ago.

Paleoproterozoic 1

noundomain: time

EnWordnet [ver.5.0]

English

Definition

The Paleoproterozoic (also spelled Palaeoproterozoic) is the first of the three eras of the Proterozoic occurring between 2,500 to 1,600 million years ago.

Examples

1.The crown eukaryotes, from which all modern day eukaryotic lineages have arisen have been dated to the paleoproterozoic era.

Synonyms

Palaeoproterozoic 1

Part_holonym

Siderian 1

noun

the first geologic period in the Paleoproterozoic Era that lasted from 2500 to 2300 million years ago.

Rhyacian 1

noun

The Rhyacian is the second geologic period in the Paleoproterozoic Era and lasted from 2300 to 2050 million years ago.

Orosirian 1

noun

The Orosirian is the third geologic period in the Paleoproterozoic Era and lasted from 2050 to 1800 million years ago.

Statherian 1

noun

The Statherian is the final geologic period in the Paleoproterozoic Era and lasted from 1800 to 1600 million years ago.

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