Post by Lanky Giraffe on May 19, 2017 18:09:13 GMT
Keeping modern animals in zoos isn't a great idea, large animals were meant to have huge amounts of land, zoos are old fashioned. This means that anything bigger than an elephant is not a great animal to fit in the modern world. Most dinosaurs would be a huge problem to even keep in wildlife parks. Some animals could fill a niche in today's ecosystem without messing it up too much (e.g the Wooly Mammoth can be the large prey animal of the arctic) but others are either from a completely different climate or would mess up the ecosystem.
Fish or sea invertebrates (Cambrian biota, Sea Scorpions etc.) would be okay in aquariums, as their lifestyle is similar to their living relatives, so there wouldn't be much problem there. Temnospondyls (the big amphibian things) went extinct in the first place because of competition with crocodiles, so if they were to be re-introduced, it would have to be in areas with no crocodillians. The only Dinosaurs I could think of that would fit into today's ecosystems are small animals such as Microraptor and other small dinosaurs. Wildlife parks could house midsize dinosaurs no bigger than a horse such as Styracosaurus and Dilophosaurus, but even then they would not be able to be released into the wild. Large land invertebrates (Meganura, Pulmonoscoprius etc.) were only big in the first place because of the large amount of oxygen. The modern atmosphere may not be suitable for them. Specialised bio-dome type structures (like the Eden Project on steroids) could meet those requirements. Ancient Synapsids or "mammal like reptiles" pretty much all have their niches filled by mammals today, so there is not much room for them. Pterosaur niches are almost all filled by birds today, fitting them in would be difficult (I'm sure there would be room for a big Belgium Hatzegopteryx, right? no) As for sea reptiles, Nothosaurid niches are filled by Sea Lions, Icthysaurs by Dolphins and Porpoises, Plesiosaurs/Pliosaurs by large sharks and big fish like Leedsicthys by Whales. Many Cenozoic large mammal's decedents are alive today, so bringing them back would not achieve much.
Many ice-age megafauna were hunted to extinction by humans, like the Mammoth. They are the prehistoric animals most likely to be brought back, and the most logical. In areas such as Siberia, these animals may be able to fit in without too many risks, but they would have to be heavily monitored to make sure they are healthy and not at risk or putting modern species in risk of extinction.
Recently extinct animals (I didn't count them as prehistoric) like the Tasmanian tiger should most definitely be brought back, and should take priority. We know for 100% we made the animals extinct, so we should bring them back.
TL;DR, Mammoths n' that yes. Everything else no/if can find a niche for them.
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