The archean age, during which the brooding seems to have gone on, was probably as long as all the ages since.
2
The period following on after Archean time is called, by geologists, Paleozoic time.
3
Others divide the Precambrian into two eras, the very ancient Archean and the more recent Proterozoic.
4
Archean rocks form the cores of the ancient crystalline masses within the littoral zone from Algiers to Bona.
5
Rocks of Archean age cover wide areas in the interior, in West and East Africa and across the Sahara.
Uso de archaean em inglês
1
No known archaean seemed to be equipped to be a host cell.
2
But it was an archaean that had some surprising similarities to eukaryotes.
3
However, by 2010 it was pretty clear that the host cell was an archaean.
4
This implies that an archaean somehow picked up the lipid modification enzymes from bacteria.
5
When Loki was found in 2015, it was immediately apparent that it was an archaean.
6
Eventually, the archaean formed more and more of these protrusions until they completely enveloped the bacterium.
7
DNA replicates only with the assistance of a huge range of other molecules, whose complicated activity is coordinated by a cell, bacterium, or archaean.
8
Many chromosomal mechanisms are performed by proteins whose genes can be traced right back to the archaean organism that accommodated the original free-living oxygen-using mitochondria.
9
If an archaean were to suddenly pick up so many new genes, its cellular processes would have been disrupted and it would probably have died.
10
It is hard to see how this could have worked: if the archaean was eating a piece of food, why would it not digest it?
11
Directly or indirectly, the fish is a descendant of some Archaean Annelid.
12
The Archaean rocks still solidly underlie the lowest depth he has ever reached.
13
Even in the Archaean age something in the form of life may have appeared.
14
Bacteria and archaeans were the major lifeforms for two and a half billion years.
15
In Canada, more than anywhere else in the world, is this Archaean formation seen.
16
The Yule River Project is considered prospective for Archaean mesothermal lode style gold deposits.