Mosses (Bryophyta).
qwety
Ordovician .
Fish first appeared in the Ordovician Period.
I have no idea what the oxygen levels were during the tertiary period!
Cambrain
qwety
They became extinct in the mass extinction at the end of the Ordovician Period.
Algae was the dominant plant of the Ordovician. There were little to no other plants (other then algae) during the Ordovician. In the Ordovician, the common types of algae were Stromatolites (Blue green algae), and Tetradium (Red algae).
The Silurian period.
Ordovician .
The period during which life began to move on land was the Ordovician Period. It was during this time that evidence of plant spores from living fossils were found on land.
You might see volcanic action.
Fish first appeared in the Ordovician Period.
Ordovician Period
copper
I have no idea what the oxygen levels were during the tertiary period!
Moss salad Algae sundae Fungi margaritas