|
|
Post by Infinity Blade on Mar 1, 2017 7:48:37 GMT 5
If giant theropods lived with mammalian megaherbivores, would the former be able to sustain themselves on the latter? I ask because megamammals are slow breeding K-strategists. By contrast, herbivorous dinosaurs (which giant theropods actually preyed upon) were fast breeding R-strategists with much higher reproductive output and higher annual population expansions (as far as I'm aware).
|
|
|
|
Post by jhg on Mar 11, 2017 3:05:41 GMT 5
I think it's possible.
What if Velociraptor turned up in Mongolia's wilderness today?
Oh, I'm BACK!!!
|
|
|
|
Post by Infinity Blade on Apr 23, 2017 6:15:33 GMT 5
I think I remember reading something about how Velociraptor's habitat (what's now the Djadochta Formation) actually wasn't much different than it is today. So maybe climate won't be an issue. In the Gobi Desert, maybe it could hunt creatures like Goitered gazelles, Tolai hares, and maybe the young of larger ungulates (maybe camel and ibex calves and wild horse foals)? Maybe it would do fine.
How would Tyrannosaurus fare in Pleistocene Florida? I think I recall reading that Hell Creek had a climate like that of Florida or the Everglades in that state (and at least in the last 300,000 years of the Cretaceous, the average annual temperature was 23oC; see the Hell Creek climate thread). And during the Pleistocene, Florida had megafauna like glyptodonts, ground sloths, and proboscideans (namely the Columbian mammoth and American mastodon). Could Tyrannosaurus sustain itself off of those and other animals?
|
|
|
|
Post by An Goldish Jade on Jul 11, 2017 9:19:40 GMT 5
there is no doubt, that Tyrannosaurus is fully capable of hunting those animals, but those herbivoures, because they lack natural preadators, and they dont grow quickly, there is a risk, that some of those animals would be hunted to extinction.
if Komodo Dragon are introduced into western europe, could they fare well?
|
|
|
|
Post by creature386 on Jul 11, 2017 17:40:26 GMT 5
Considering that hunters apparently need to control deer populations there, they would have enough food and not many competitors.
Postosuchus in modern day Africa (idea shamelessly stolen from a carnivora thread I participated in 5 years ago)?
|
|
|
|
Post by Infinity Blade on Jul 12, 2017 0:41:36 GMT 5
Depends on where in Africa it's placed. According to two citations on Wikipedia's Postosuchus page, the beast lived in a tropical environment. Sub-Saharan Africa might therefore be too dry and arid for it. In tropical places (i.e. rainforests), though, it may be a different story. As far as I'm aware, the dominant terrestrial predator in those parts is the leopard. Because Postosuchus is much bigger than a leopard, it might take upon the dominant apex predator role in the ecosystem while the leopard finds itself in the same position as its sub-Saharan counterparts are in with lions. Perhaps in these areas Postosuchus would fare well.
I can't think of a hypothetical scenario right now, so you can just give input to one of my earlier ones.
|
|
|
|
Post by An Goldish Jade on Jul 12, 2017 7:53:27 GMT 5
Carcharadon, ok fair enough. How would a clouded leopard fare in Early Cretaceous Liaoning? it would be able to found suitable prey, but would need to be careful living with large dinosaurus, so it would be quite likely to become nocturnal. if Pulmonoscorpius kirktonensis lived in modern-day south east asia, what animal can prey on it? |
|
|
|
Post by dinosauria101 on Jun 30, 2019 14:59:06 GMT 5
No idea
How might large Carcharodontosaurs (Giganotosaurus, Mapusaurus, Carcharodontosaurus, etc) survive in Pleistocene North America alongside Smilodon fatalis, the American mastodon, and Columbian mammoth?
|
|
|
|
Post by elosha11 on Jun 30, 2019 15:50:20 GMT 5
If it was as large as a modern Nile, I would imagine that I'd have a very similar diet and behavior towards other animals. Cautious around hippos, elephants, and lion prides. Dominant around anything else. They would obviously be more terrestrial than Niles though. How would Liopleurodon do in the seas of Europe today? How would its relationship with large sharks and whales be like? How about orcas? What would it feed upon? Lets assume the Liopleurodon ferox actually reached 2.5. It would likely be able to bully sharks even the great white would likely be no match for the reptile. The orcas are a different story. They are much larger, and live in pods. Size, teamwork, and intelligence would ensure dominance for the killer whale. Large whales are too big for it to prey upon. It would likely go after schools of fish. Just wanted to address this old but interesting post. I've always wondered about GWS v. Liopleruodon. If it's true that Liuplerudon COMMONLY reached 2.5 tons than, yes it would likely dominate GWS, as it would be - on average - quite a bit larger. But if that's a max size, not commonly reached, that puts it on par with modern GWS (who are, in turn, smaller today than those GWS recent prehistory), who can on occasion reach or even exceed 2.5 tons. Given that GWS, as all life, is negatively affect by humanity, it may in fact be suffering an "unnatural" disadvantage, in that in a pristine, prehuman ocean environment, GWS appeared to be larger than those today. So in a "natural" unspoiled setting, the shark may have actually been the larger animal. Still, it's quite clear the sizes of the animals largely overlap. So what else to look at. The closest analogy would appear to the Ginsu shark and similar sized mosasaurs. While the common theory is that mosasaurs outcompeted and maybe drove the sharks to extinction (and I'm a bit skeptical of that, although mosasaurs could have been a contributing factor), the fossil records actually contains far evidence of Ginsu shark feeding and predation (based on healed bite marks) on mosasaurs. And not even small ones, the ocean of kansas website has several quite large mosasaurs of 6 to 8 meters bitten in half by Ginsu sharks. So the evidence may suggest that Ginsu sharks were actually a major threat to mosasaurs in their own size range. Where mosasaurs may have had the advantage was in faster reproduction and ultimately in growing to larger sizes (40-50 feet) than even the biggest Ginsu sharks (25 + feet) could handle. This isn't a perfect analogy. Ginsu sharks are larger than GWS, and likely more aggressive (given the hostile/predator-rich environment it lived in, how could it not be?) and mosasaurs are not the same as Liopleurodons, although I cannot guess which one of the reptiles would have been more formidable at parity sizes. But it does suggest that large predatory sharks may have an advantage. For one thing, I still think lamnid sharks are likely heavier at the same length than mosasaurs or pliosaurs (may be less of a difference for the latter). That extra size may have been an advantage. Anyway, just my two cents, I actually think is is a fascinating contest; don't know if we have GWS v Liopleurdon interspecific thread. If not, I might make one. |
|
|
|
Post by dinosauria101 on Jun 30, 2019 16:41:11 GMT 5
Lets assume the Liopleurodon ferox actually reached 2.5. It would likely be able to bully sharks even the great white would likely be no match for the reptile. The orcas are a different story. They are much larger, and live in pods. Size, teamwork, and intelligence would ensure dominance for the killer whale. Large whales are too big for it to prey upon. It would likely go after schools of fish. Anyway, just my two cents, I actually think is is a fascinating contest; don't know if we have GWS v Liopleurdon interspecific thread. If not, I might make one. Well, we do have that one: theworldofanimals.proboards.com/thread/319/great-white-shark-liopleurodon-feroxAnyhow.......the shark would likely be driven to extinction and the whales into tight competition (I say that because female killer whale vs 1-1.7 ton Liopleurodon on Carnivora was about 50/50) if a 2.5 ton Liopleurodon existed there. Anyone got an answer for my question? (I know it's close to the one at the top of the page, but it specifies just a few animals instead of a whole group) |
|
|
|
Post by elosha11 on Jul 1, 2019 6:29:11 GMT 5
No idea How might large Carcharodontosaurs (Giganotosaurus, Mapusaurus, Carcharodontosaurus, etc) survive in Pleistocene North America alongside Smilodon fatalis, the American mastodon, and Columbian mammoth? I think they'd fare well, assuming they could adjust to climate and environment. There would be plenty of large and medium size prey for them and Smilodon (even if they lived in prides) would likely not pose a threat to the adult carcharodontosaurs, due to their overwhelming size and formidable weaponry. Mastodon and mammoth would be formidable opponents, but there's plenty of medium size prey or subadults of either species. And they'd likely even opportunistically prey on the adult mammoths/mastodons at times. |
|
|
|
Post by jhg on Jul 1, 2019 9:01:43 GMT 5
Well, I got nothing.
What if cheetahs lived in the Great Plains?
|
|
|
|
Post by dinosauria101 on Jul 1, 2019 9:03:12 GMT 5
I think they'd be giving pronghorns a run for their money. Literally.
Assuming Sauroposeidon inhabited the Oldman Formation, would it fall prey to Daspletosaurus packs or would they tyrannosaurs still go after their usual prey?
|
|
|
|
Post by jhg on Jul 1, 2019 11:45:37 GMT 5
I’ll have to wait for new Sauroposeidon size estimates first; The discount Brachiosaurus sizes aren’t valid anymore.
What if Leedsichthys turned up in the Atlantic Ocean today?
|
|
|
|
Post by dinosauria101 on Jul 1, 2019 16:21:57 GMT 5
We'd probably have to kiss whale sharks goodbye
What if Elasmotherium and Giganotosaurus coexisted? Could they form a successful predator prey relationship?
|
|
