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Topic starter 23/03/2022 9:01 am
Hello, everyone! Do you know the era or time period, when protozoa were evolved?
29/03/2022 5:46 am
The simplest organisms that had a nucleus appeared about 1.5 billion years ago. Living organisms without a nucleus appeared about 4 billion years ago. If we talk about a specific period, then there is no generally accepted division into periods.
Topic starter 07/04/2022 1:01 pm
@ekaterina-gribacheva Thanks a lot! Interesting, what's the oldest protozoa on the Earth now?)
07/04/2022 5:31 pm
It seems that in biology, the period of the appearance of protozoa is called Archean