Precambarian- When earth’s atmosphere formed
Mesozoic- Ended with a massive impact
Paleozoic- When oxygen-breathing organisms first thrived
Cenozoic- Began about 65 million years ago
Hope this helps! :)
An era is "A long and distinct period of history with a particular feature or characteristic."
Mesolithic
Mesolithic
runners and bricks
The Napoleonic era was characterized by advances in education and scholarship.
Out dated.
written launguage
that's last match between 2 rivals
An era is "A long and distinct period of history with a particular feature or characteristic."
When John Cena debuted back in 2002 and faced Kurt Angle in a match on SmackDown! but lost the match, thus naming the era "Ruthless Aggression Era".
reform....
I think the Equidea family are prehistoric horses, the characteristics depend on the era. if I'm right then a characteristic is that they had either 3 or 4 toes, depending on when it was.