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Extinct Animal Questions
Topic Started: Nov 26 2013, 10:24 PM (193,304 Views)
TheNotFakeDK
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200% Authentic

BossMan, Jake
Apr 4 2016, 10:45 AM
Some where a while ago I heard someone reference a Hell Creek Therizinosaur, what material is known from this dinosaur if any?
Nothing anymore, the supposed therizinosaur astragalus was re-identified as a Tyrannosaurus quadrate back in 2002.
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54godamora
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okay I have 2 questions:

1. could a dakosaurus survive in fresh water?

2. what is the largest ground sloth?
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BossAggron
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Formerly Dilophoraptor

1. i don't see why not, but I'm not well versed in many things marine

2. Megatherium itself.
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Ztlabraptor211
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1. I wouldn't think so. I haven't looked into it at all and the closest reference would be a crocodile since they're both aquatic reptiles. Most crocodiles can't survive in salt water, so I'd assume vice versa would be the same.
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54godamora
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well what about for a short amount of time like say an hour or two?
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Mathius Tyra
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Rat snake is love... Rat snake is life

@Godamora: Marine reptile would be fine in freshwater if it isn't long term thing. Even marine mammals today like dolphins can survive long in freshwater. Unlike fish that liquid and mineral are freely to enter or leave their body and thus, making them facing osmosis hazard, for example, marine fish that normally have to cope with high concentration of salt in the sea water, have their body to save up water and get rid of salt as much as they can, but when they are in freshwater, their body instead, saving too much of water and get rid too much of mineral, making their cell bloat up and break from water overload.

Amniotes like reptile and mammals, on the other hand, can control their osmotic equilibrium well and don't face hazard like fish. However, in long term. Marine reptile and mammal would face problem in freshwater such as the worst bouyancy in freshwater and unfamiliar parasites.

So, yes... Dakosaurus definitely can survive for a period of time in freshwater.
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54godamora
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on another note, how would 2 Dakosaurs fight each other?
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CyborgIguana
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Godamora, remember that all we have of these animals are fossils. As such, most of the questions you've asked in this topic can't be answered.
Edited by CyborgIguana, Apr 6 2016, 02:25 PM.
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54godamora
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i mean if possible.
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BossMan, Jake
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Son of God

Discussing these giant eocene sea snakes, could they have been toxic enough to kill some of the larger basilosaurs?

Or would they have even been poisonous?
Edited by BossMan, Jake, Apr 6 2016, 02:29 PM.
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Mathius Tyra
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Rat snake is love... Rat snake is life

I thought they are not related to modern sea snakes at all? One of them, iirc, is even a relative of the harmless elephant trunk snake.
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PrimevalBrony
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Did all dromaeosaurs hunt in packs? And if no, which ones are more likely to be solitary/only pair hunters?
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BossMan, Jake
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Son of God

Thats still disputed I think, but based on fossil evidence I would think that quite a few of the species did. From Deinonychus, to Utahraptor

Except maybe the Unenlagiinae considering they were more like wading birds I see no reason for them to live in social groups
Edited by BossMan, Jake, Apr 7 2016, 02:20 PM.
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CyborgIguana
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So far there's very little evidence that ANY dromaeosaurids regularly hunted in organized packs. One fossil trackway appears to show several large dromaeosaurids moving as a group, but that's it. The supposed evidence of "pack-hunting" in Deinonychus could just as easily have been a scavenging situation with multiple individuals drawn to the same carcass by chance.

Though it's commonly accepted as fact, dromaeosaurid pack-hunting is really just speculation for the moment.
Edited by CyborgIguana, Apr 7 2016, 02:30 PM.
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BossMan, Jake
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Son of God

Don't forget that Utahraptor death trap discovered a while back

Not saying that means anything, but its still note worthy
Edited by BossMan, Jake, Apr 7 2016, 02:59 PM.
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