Proterozoic

Proterozoic englannista suomeksi

1. proterotsooinen kausi

1. proterotsooinen

2. proterotsooinen aioni">proterotsooinen aioni

Proterozoic englanniksi

1. proterozoic

1. Of or relating to the geologic eon from 2,500 Ma to 541.0±1.0 Ma.

2. The eon from 2,500 Ma to 541.0±1.0 Ma, the beginning of the Phanerozoic, marked by the build up of oxygen in the atmosphere and the emergence of primitive multicellular life.

(hyper)

(hypo)

(coordinate terms)