Orogen- term for any body of rocks deformed by erosion (orogeny).
Mitochondrion- a structure formed from two prokaryotic cells in which one lived within the other and altered it.
Stromatolites- although well represented in theArchean much more abundant in Proterozoic rocks, due to the
increase in size of continents the grew in diversity attaining their greatest diversity about 1.2 billion years ago.
Chloroplast- it is widely agreed that plantlike protists evolved as a result of a protozoan cell consuming a
cyanobacterial cell, this intracellular body is known as a chloroplast.
*Animals probably originated during Neoproterozoic time and diversified spectacularly during the last 30
million years of