>Dinosaurs dominate terrestrial megafauna>Rapid climatic disruption occurs>They persist by contracting into an aerial niche as avian dinosaurs>Mammals later dominate terrestrial ecosystems>Climatic disruption occurs again>They persist by contracting into smaller, specialised niches such as bats and rodents>Cephalopods then undergo adaptive radiation, filling the vacant macroniches left by mammalsWhat would this look like, how long would it take, and how large or complex could they become?Mammals were unable to reach non-avian dinosaur scale due to lower atmospheric oxygen, denser skeletal structures, and the energetic cost of large, metabolically expensive brains. Cephalopods possess extremely high neuronal density and a distributed nervous system, with significant cognitive capacity relative to body size, as well as no bones, so would they struggle even more to reach larger sizes?
>aislop
>>5090904Yes, I drew a shitty sketch and got it to make it into a better, more identifiable image. Go to /ic/ if you want to complain that your deviant art porn isn't marketable anymore, whilst engineers and technicians have been losing their jobs for years due to technological advancements.
>>5090905It looks like shit
>>5090906I don't care.Answer the fucking question in the opening post.
>>5090906You're only saying that because you know it's AI. If someone drew that themselves you'd be saying how good it looks.
>>5090930No i wouldn't. Fucking look at it
cephalopods don't have bones so i don't think they would do well on land compared to vertebratessure they can crawl along a beach but they wouldn't be able to compete with vertebrates like lizards, snakes, and turtles in terms of mobilityeven if all vertebrates died out i think crabs are better suited to land, they could be like coconut crabs but biggeralso stop using ai shart
>>5090945Imagine the amount of calories they would need to carry their own weight 24/7 with muscle alone
>>5090956that was the stupidest part of future is wild, when the narrator says the megasquid's legs are pure muscle
>>5090900>Mammals were unable to reach non-avian dinosaur scale due to lower atmospheric oxygen, denser skeletal structures, and the energetic cost of large, metabolically expensive brains.none of that is trueyou can't base your predictions on false information you made up and expect it to be accurate or even interesting
In over 500 million years, not a single cephalopod has evolved to tolerate freshwater.This isn't a fundamental limitation of molluscs (bivalves and gastropods managed, after all), but whatever it is about the lifestyle of cephalopods in particular, it keeps them out.Worth noting that this includes instances where large marine environments contracted and eventually became freshwater habitats, e.g. the Amazon. Numerous normally marine species (cetaceans, fish, rays) managed to adapt.Cephalopods didn't.Cephalopods are an exceptionally conservative lineage that just isn't going to leave the ocean.
>>5090912thanks :)>>5090931QQ>>5090945But what if those lizards, snakes and turtles died out so the niche was completely open to be taken?>stop using ai shartNo, I will stop when people give a shit about engineers having their jobs replaced. Artists are bottom of the barrel in terms of use to society.>>5090956Yeah this is what I mean, Maybe it'd evolve or use a shell, like a crab or snail?>>5090978>you are wrong, but I won't explain why :^)At least contribute something.Most sources I read say their 'hollow-bones' that allowed air pockets to form inside was one of the reasons their bones could grow larger.They also had tiny brains, and used as little as 0.5% of their total energy devoted to brain function, vs 5% for an Elephant or 25% for a human.
>>5090900If mammals were to get downgraded into smaller niches again, then reptiles would take over faster than any cephalopods and probably birds too, All of them are already adapted for land and even a handful like crocodilians and turtles in aquatic environments.
stupid post, shitty AI image. cephalopods live in the ocean and aren't very numerous or diverse.
>>5091093already said in the post if vertebrates died out that crabs would be more likely to dominate because they are already adapted to land
>>5090900>>5090930>Unidentifiable theropod >Humpback/blue whale hybrid>Tentacles make absolutely no sense>Rat's left forelimb comes out of its neck>Gull's legs fusing with its tail>Bat has no legsOh yeah, it's aislop
>What would this look like, how long would it take, and how large or complex could they become?environmental change so severe the majority of animals die off within millions of years
>>5091214
>>5091215
>>5091183Okay, imagine if crabs died out too. I just want it for cephalopods. >>5091114Reptiles have never dominated because they are cold blooded. If another mass extinction happened, turtles would be fucked as they're on the brink now.Many reptiles and amphibs are on the brink as is.>>5091203>Unidentifiable theropodT-rex's are drawn in all sorts of styles, colours, feathered/non-feathered, markings and all sorts. 99.99% of people would say 't-rex' if they saw that, compared to my shitty drawing.The whale is identifiable as a whale, glad you agree.The other things are just you being autistic. Sorry, but artists just aren't that important, I will keep making ai slop :)
>>5091214I could sooner see an octopus up a tree than walking with huge fat legs of muscle. The thing is, their very skin would have to change or constantly excrete a softening liquid, right?
>>5091258Sorry, I meant non-dinosaur reptiles* Dinosaurs and birds have a special heart chambering that allows the blood to warm.
Cephalopods could only colonize land if:>all land vertebrates die out>all large arthropods on land die outand at that point what is there even left for them to eat on land?
>>5091258>Reptiles have never dominated because they are cold blooded.Wrong, we had whole prehistoric ages were reptiles were the dominate species. Cephalopods themselves are not only coldblooded but aren't nearly as adept to land as reptiles are, so what is the point you are making?>turtles would be fucked as they're on the brink now.There are about 300+ species of them around, so the entire species being wiped out by a mass extinction is unlikely. Wiped out linages will just be replaced by other surviving turtle species as time goes by and evolve into the empty niches.>Many reptiles and amphibs are on the brink as is.True but like turtles you mentioned there are still plenty of reptile species that could take the niche anyways through convergence. Again, for example, Half of crocodilian species today are threatened with extinction but niches left by the ones gone will be open and eventually be taken by surviving stable species of crocodilians faster than any radically different animal like octopi. You'd have to make tons of animal species extinct if you want cephalopods to be dominant.
>>5091269Okay, but reptiles now are pretty fringe and small, imagine if they also die out, just got arguments sake. I want to focus on cephalopods and how THEY could/would adapt or fill niches.>>5091264Well, what was left for the mammals to eat after every animal over 30kg's went extinct on land? Bugs didn't end up taking over then, and for arguments sake, lets imagine they don't this time either.
For the sake of the argument lets say every single life form except for plants and cephalopods die out. Would they colonize land then?
>>5091333>Well, what was left for the mammals to eat after every animal over 30kg's went extinct on land?bugs, lizards, birds, frogs and smaller mammals
>>5091343they'd have to get pushed out the ocean, adapt to freshwater, and develop significant muscular anatomy to have a chance
>>5090900Pretty sure that bats didn't evolve from whales OP.
>>5091353kek
>>5091343they would starve from all their prey being extinct
>>5091347There you go then, so there will be plenty of little critters for them to eat.
>>5090900>Only surviving dinosaurs are birds>2/3 extant mammals are batsCephalopod flight when?
>>5090930>T. rex with 3 fingers>11 armed octopus>humpback/blue whale hybrid>whatever the fuck is going on with the bat>If someone drew that themselves you'd be saying how good it looksyeah no
Cephalopods would have to evolve being able to live in freshwater / swamp / brackish conditions before making any evolutionary steps. When you think about it their bodies are basically one giant heart muscle that needs constant sodium .Without that they die or evolve far far away from that bodyplan to survive on land
>>5091343Most likely so. But they'd be at war with crustaceans and insects.
