@CrawlingCoconut we didnt directly evolve from these, but because these produced oxygen and were around for so long, are attributed to providing oxygen for which other life forms which we evolved from were able to survive
@CrawlingCoconut well there were some single cell bacteria and colonies of blue green algae, but the stramatolites it seems, were the main thing, and they are usually considered to be around since like 3.5 to 3 billion years ago, but then 1,25 billion years ago there numbers dropped, which could indicate multi celled animals grazing on them, which led to their decrease in numbers, but considering the earth is only 4.567 billion years old, it gives you an idea of ancient stramatolites are
Just read about these in the great book "A short history of nearly everything", and a second later I can see them on you tube. Science comes so close! I love this era.
I was sure that you'd know the relationship, though sometimes people say single-celled when they mean prokaryotic. I volunteer for the Lest We Forget Amoeba Society ;^)
Unicellular life does include eukaryotes, but most people know very, very little about prokaryotes. (I'm in the very little category.) Heck, most people do not know the difference between a virus and a bacterium.
It's ironic when one considers that prokaryotes were all that lived for over 2 billion years. Bacteriology is just not sexy, I guess ;)
Without the oxygen produced by the cyanobacteria, we could not have evolved.
If serial endosymbiotic events had not resulted in "internalized" cyanobacteria in plants, we could not survive. Similarly, mitochondria in plants and animals derive from bacteria (prob. proteobacteria, iirc).
Our most distant ancestors *were* bacteria. His friend was wrong about stromatolites per se.
All modern life came from the same common ancestor (LUCA) about 3.8 billion years ago. It's not a straight line from bacteria to humans, but they are a part of your cells. Without these there would be no oxygen to breathe.
@magick205 I don't believe in LUCA. It's impossible (or at least verrrryyyy unlikely) that all of the billions and billions of species on the planet originated from one single organism. Rather, it was much more likely that a community of genetically unique organisms thrived in symbiosis, competition, and predation with one another. On top of that, the organisms likely exchanged sections of their genomes with one another. That community was the Ultimate Ancestor.
@lorez201 But where did all of the species that comprised that community come from? Did all of its members just pop into existence at the same time? if so, how did organisms that arose independently and have radically disparate gentics manage to breed and produce the species we see today, whose fundamental chemistries are virtually identical? If life did arise multiple times, our biosphere must be based upon only one of those events, so we still had a common ancestor.
@lorez201 However, there may be other ancestors unrelated to ours. So there could have been multiple genetically distinct organisms that arose independently, but all of the life we see today would only be based on one of them. If there's still life from another ancestor, we haven't seen it yet.
Truly amazing, "stromatolites" only exist in a few locations on Earth today, but they provide a unique glimpse into what life was like 1000's of millions of years ago, when microbes ruled the world.
how the fuck did we evolve from these? more importantly, what did these evolve into...
CrawlingCoconut 11 months ago
@CrawlingCoconut we didnt directly evolve from these, but because these produced oxygen and were around for so long, are attributed to providing oxygen for which other life forms which we evolved from were able to survive
AZKOJYUN 11 months ago
@AZKOJYUN there were other life forms when they were around?
CrawlingCoconut 11 months ago
@CrawlingCoconut well there were some single cell bacteria and colonies of blue green algae, but the stramatolites it seems, were the main thing, and they are usually considered to be around since like 3.5 to 3 billion years ago, but then 1,25 billion years ago there numbers dropped, which could indicate multi celled animals grazing on them, which led to their decrease in numbers, but considering the earth is only 4.567 billion years old, it gives you an idea of ancient stramatolites are
AZKOJYUN 11 months ago
Just read about these in the great book "A short history of nearly everything", and a second later I can see them on you tube. Science comes so close! I love this era.
Ppendu 1 year ago
LOL. Even if he does, it would be messy to use a keyboard with such sticky fingers ;^/
EvolvedAtheist 2 years ago
Not to mention grasshoppers! Or that they share 50% of their genes with the cauliflower.
What would they say? They'd either deny it or claim godidit.
They exhibit fascinating, but frustrating, cognitive disorders.
EvolvedAtheist 2 years ago
I was sure that you'd know the relationship, though sometimes people say single-celled when they mean prokaryotic. I volunteer for the Lest We Forget Amoeba Society ;^)
EvolvedAtheist 2 years ago
Unicellular life does include eukaryotes, but most people know very, very little about prokaryotes. (I'm in the very little category.) Heck, most people do not know the difference between a virus and a bacterium.
It's ironic when one considers that prokaryotes were all that lived for over 2 billion years. Bacteriology is just not sexy, I guess ;)
EvolvedAtheist 2 years ago
Without the oxygen produced by the cyanobacteria, we could not have evolved.
If serial endosymbiotic events had not resulted in "internalized" cyanobacteria in plants, we could not survive. Similarly, mitochondria in plants and animals derive from bacteria (prob. proteobacteria, iirc).
Our most distant ancestors *were* bacteria. His friend was wrong about stromatolites per se.
EvolvedAtheist 2 years ago
This comment has received too many negative votes show
man...Some guy I work with was telling me about this and saying that human beings came from stromatolites......bullshit
Moomie83 3 years ago
All modern life came from the same common ancestor (LUCA) about 3.8 billion years ago. It's not a straight line from bacteria to humans, but they are a part of your cells. Without these there would be no oxygen to breathe.
magick205 3 years ago 8
@magick205 I don't believe in LUCA. It's impossible (or at least verrrryyyy unlikely) that all of the billions and billions of species on the planet originated from one single organism. Rather, it was much more likely that a community of genetically unique organisms thrived in symbiosis, competition, and predation with one another. On top of that, the organisms likely exchanged sections of their genomes with one another. That community was the Ultimate Ancestor.
lorez201 10 months ago
@lorez201 But where did all of the species that comprised that community come from? Did all of its members just pop into existence at the same time? if so, how did organisms that arose independently and have radically disparate gentics manage to breed and produce the species we see today, whose fundamental chemistries are virtually identical? If life did arise multiple times, our biosphere must be based upon only one of those events, so we still had a common ancestor.
ValekHalfHeart 3 months ago
@lorez201 However, there may be other ancestors unrelated to ours. So there could have been multiple genetically distinct organisms that arose independently, but all of the life we see today would only be based on one of them. If there's still life from another ancestor, we haven't seen it yet.
ValekHalfHeart 3 months ago
Truly amazing, "stromatolites" only exist in a few locations on Earth today, but they provide a unique glimpse into what life was like 1000's of millions of years ago, when microbes ruled the world.
marioblue42 4 years ago 4
WOW!!!=0
mrpeacecoffe 4 years ago
Amazin I have to do an assignment on this =S
zebingo 4 years ago
VERY Amazing!
TRUEADONIS 4 years ago