He is of opinion that in some geologicalera the whole place has been formed in a salt-water lake.
2
This summary statement will convey some idea of the extraordinary phase through which the earth passed in the early part of the present geologicalera.
3
We'll have to dump it when we dock, it's got a half-life longer than some geologicaleras now.
4
It altered and adapted over geologicaleras, slowly learning to utilize the two contrasting light sources as an additional energy supply.
5
Since nobody had ever bothered to study extinction in an organized way, there was little information about rates of extinction in other geologicaleras.