It always staggers me when I remember that for roughly sixty million years during the Carboniferous Period, there were trees but no microorganisms capable of decomposing them.
Just sixty million years of branches falling off and trees falling down and… just sitting there on the ground, not rotting at all.
Note that although species can be described as tree-like, they didn’t quite look like modern trees do. Also, much of the world was swamp, and much of the dead plant material sank into these bogs and decayed into peat.
The amount of CO2 trapped during this period caused the atmosphere to be around 35% oxygen. This allowed life with inefficient respiratory systems to grow much bigger in size without suffocating, mainly insects. Think woodlice 6 feet long, spiders the size of dogs, millipedes as big as cars, and dragonflies as big as eagles.
The ocean was purple once, and another time the only thing taller than little bushes were twenty foot tall mushrooms shaped like asparagus
FWIW a lot of “moss” from that time was very unlike what we think of as moss today.
What was it like? Genuinely curious!
Here are some modern-day variants of mosses that don’t even look like what we typically think of as “moss”.
You’re thinking about this like it’s just a single uniform endless pasture of gray-green moss. But you have to recognize all the moss is competing for space and resources.
So you’ve got 40M years of different kinds of mosses all developing novel evolutionary strategies as they try to one up one another. Just a rainforest of mosses, with an uncountable variation of shapes and colors and compositions.
Moss bushes. Moss trees. Hanging mosses. Floating mosses. Dense spongey moss. Brilliantly colored moss. Poisoned moss. Cannibal moss. Stinging moss. Velvety moss. Venus Fly Moss. Moss of a thousand different color variants.
And every few hundred years, you get a new moss meta strategy for being the best kind of moss that pushes all the other moss out. Played across 40M years, it’s this big squirling fractual of warring moss tribes, until finally another organism figures out the optimal play on all moss and then it’s over as fast as it started.
I want to see a visualization of this now.
Good attempt, but there wouldn’t be bushes, right?
Maybe more like this:
