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| Extinct Animal Questions | |
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| Topic Started: Nov 26 2013, 10:24 PM (193,261 Views) | |
| BossMan, Jake | Oct 3 2016, 09:58 PM Post #3496 |
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Son of God
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Not sure if there is a real way of knowing this but Mammoths and Mastodons: Is it possible their vocals would've sounded close to modern elephants...like (dare I say it) indistinguishable? Cause I don't believe there are much differences between Asian and African elephant sounds for one and also they really don't seem to different to have produced a different kind of call, so that's why I ask |
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| CyborgIguana | Oct 4 2016, 02:05 PM Post #3497 |
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Mammoths would've almost certainly sounded like elephants, AFAIK there's no reason to think that they wouldn't. |
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| heliosphoros | Oct 4 2016, 11:31 PM Post #3498 |
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Yes. No true modern analogue anyways |
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| Acinonyx Jubatus | Oct 5 2016, 12:01 AM Post #3499 |
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I AM THE UNSHRINKWRAPPER!
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No, I mean Aegirocassisseems to have had two rows on each side. All the reconstructions I've seen of other anomalocaridids only have one row. |
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| heliosphoros | Oct 5 2016, 10:15 AM Post #3500 |
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I think the upper pair is just armour adornments? |
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| TheNotFakeDK | Oct 5 2016, 11:55 AM Post #3501 |
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200% Authentic
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The dorsal flaps of Aegirocassis and other anomalocaridans are associated with the rows of setal blades (probably gills) that run across their backs, and appear to be homologous with the flaps of "gilled lobopodians". The ventral flaps, which are the only ones we're used to seeing in fossils of other anomalocaridans, appear to be homologous with the lobopodian limbs, having been adapted for swimming instead of walking. Since the discovery of Aegirocassis, a few other anomalocaridans have been found to possess dorsal and ventral flaps, including Peytoia and possibly Hurdia. However, these three are all hurdiid anomalocaridans. As far as I'm aware, no anomalocaridid or amplectobeluid has been preserved showing dorsal flaps. The authors describing Aegirocassis suggest this could either be an artefact of preservation, since members of the anomalocaridid+amplectobeluid clade are preserved flattened and split, which only ever reveals the ventral flaps or the setae (this is why all previous anomalocaridan illustrations ever showed one pair of flaps, they were the only ones ever reliably preserved). Alternatively, they also suggest that their absence in this clade is genuine, and that the dorsal flaps could have been lost by them, perhaps only left as the flaps on the tail fan. Whatever the case, the presence of paired flaps in hurdiids, and the presence of dorsal flaps with ventral limbs in Cucumericrus and "gilled lobopodians" implies that the dorsal flaps were ancestral to anomalocaridans. Anomalocaridids and amplectobeluids either lost this ancestral feature, or they retained them and we just haven't been able to identify them in the fossils yet. tl;dr: Did all anomalocaridans have two rows of flaps? Maybe. |
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| Furka | Oct 7 2016, 04:08 PM Post #3502 |
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Is it possible that cave bears might have shared hibernating grounds even among unrelated individuals ? |
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| Incinerox | Oct 7 2016, 04:46 PM Post #3503 |
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Āeksiot Zaldrīzoti
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I suppose they'd not have been all that different from modern bears in that regard.
Edited by Incinerox, Oct 7 2016, 04:49 PM.
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| Acinonyx Jubatus | Oct 8 2016, 02:53 PM Post #3504 |
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I AM THE UNSHRINKWRAPPER!
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What do we know about the environment of the Maevarano Formation? Wikipedia says it's a well-drained floodplain and somewhat dry... How would this translate into ZT2 biomes? |
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| CyborgIguana | Oct 8 2016, 05:15 PM Post #3505 |
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Personally I'd recommend Palustrine Wetlands ground cover but with a minimal number of large water bodies, maybe a few streams here and there. That's just a guess though, I'm probably not the most knowledgeable on the subject. |
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| Incinerox | Oct 9 2016, 01:53 PM Post #3506 |
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Āeksiot Zaldrīzoti
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If you only have the base game, ZT2's scrub should cover the climate factor. The Maevarano Formation seems to have been semiarid in nature, with a strong wet/dry seasonal regime. If you have it, AD's Tropical Dry Forest should suffice. I don't actually know what the plant life there was like, other than the fact grass seems to have come from the Indo-Madagascan subcontinent during the Late Cretaceous, so it's actually possible that may have some influence on things. |
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| TheToastinator | Oct 9 2016, 11:07 PM Post #3507 |
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A piece of toast and a terminator.
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Could Plesiosaurs climb onto land like sea turtles to rest and/or lay eggs? |
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| Acinonyx Jubatus | Oct 10 2016, 12:08 AM Post #3508 |
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I AM THE UNSHRINKWRAPPER!
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I asked this question too a while back and the answer was no, they could not. Don't remember why, though. |
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| Inaba | Oct 10 2016, 03:20 AM Post #3509 |
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Former Lunatic
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Larger plesiosaurs, especially giant pliosaurs would simply be too heavy to properly move on land, if they don't just collapse under their own weight that is, I think. Square cube law, and all. I also remember reading somewhere that Pliosaurus was much heavier than a similarly sized Mosasaurus. Not to mention, long-necked plesiosaurs would have to worry about their giant necks getting in the way. Keep in mind they couldn't even lift their necks high above the water level like they do in classical depictions. Another thing is, from what I can gather, plesiosaurs, and pliosaurs too, have big, densely packed bones in their flippers, much more densely packed than that in sea turtles (and even whales too for that matter). I'm not really sure what this means, I can only assume it means that plesiosaurs had stiff flippers; which I would say can only inhibit their land movements even further. |
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| DinoBear | Oct 10 2016, 10:21 AM Post #3510 |
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Getting crushed by their own weight would be less of a problem as opposed to awkwardness getting back into the water, and they don't really seem to have a need to do so (IIRC they seem to have given live birth). Correct me if I am wrong, but most stranded cetaceans seem to die of whatever complications caused them to beach in the first place, starvation, or drowning if their blowholes get covered as opposed to being crushed by their weight. Pliosaurs would almost certainly be heavier than a mosasaur at the same length by the difference in build between them. |
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