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GalileoN — Tyrannosaurus mouth Open and Closed
Published: 2012-03-03 07:12:20 +0000 UTC; Views: 5973; Favourites: 62; Downloads: 55
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Description
T Rex scale 1/35 Two heads showing a lip sealed mouth, open and closed.Related content
Comments: 11
All terrestrial animals need lips. Because if they don't it would dehydrate them and make the teeth hurt a bit. So yeah. Your pathetic attempts of saying "durr t-rex can't have lips because my childhood said so durr" and if you say some nonsense. Don't even think about bringing up crocodiles and they have no lips. It's because they are semi aquatic and their teeth were only made for gripping. Not ripping like what most meat eaters do. And dinosaurs had specialized structures on their faces that gave them lips. I mean just look at a monitor lizard's skull and it had a gap between the lower and upper jaw. But they had lips.
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The teeth hurt? So how can BOARS have exposed teeth?
And I never said that T. rex could not have any lips because nothing would orevent any theropod from having short, gum covering lips. And If the lips were long enough to cover the teeth, they would fall to the sides due to the lack of "holding tissue" to attach them to the gums (in the case of lower jaw lips) or swing when the animal roared (in the case of upper jaw lips) and they would be easy targets for rivals and we would find tooth marks near the teeth that indicated that the animal wanted to tear something off (like what we see in animals that were eaten by a T. rex) and not just small marks on the top of the snouts.
Also to say that they dehydrate is kinda exagerated. In this case, only a small part of the upper jaw gums would be exposed (even if if doubt that T. rex was 100% lipless) and the animal would not lose to much water.
Crocodiles have thick and big scales that are effective at trapping heat, so they need to open theur mouths to not overheat while sunbathing.
Animals with similar foramina patterns may have different lip leghts (lions have proportionally longer lips than domestic cats) and lizards with different foramina patterns may have similar lips, so foramina does not say anything about the lenght of the lips.
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Boar's tusks are SPECIALIZED they are designed to stab not to aid in eating meat. and T-rex might've had holes in its gums so the teeth could fit in nicely (just like some lizards)
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Lizards have no holes in the gums. Their lips are attached to the gums by a tissue that is only there because their short teeth do not pierce trough it.
Boar tusks are specialized and so do not hurt, so teeth can be exposed. Also theropods like T. rex kept replacing their teeth, so if their teeth would hurt if they were exposed, they would hurt when the teeth were replaced. In this aspect T. rex can be compared to crocodiles: no matter how many hours crocodiles spend sunbathing, they never show signs that their teeth are hurting.
T. rex's long teeth would prevent the existence of teeth covering lips anyway.
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