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| 2 more dinosaur discoveries | |
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| Topic Started: Jun 7 2017, 10:59 AM (1,086 Views) | |
| BossMan, Jake | Jun 7 2017, 10:59 AM Post #1 |
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Son of God
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https://www.google.com/amp/relay.nationalgeographic.com/proxy/distribution/public/amp/2017/06/tyrannosaurus-rex-skin-fossils-feathers-scales-science http://rsbl.royalsocietypublishing.org/content/13/6/20170092 It appears T-Rex was scaly and not feathered, though I'm not convinced by this claim, the sample is to small https://www.sciencedaily.com/releases/2017/05/170523082554.htm Ceratopsian tooth found in Mississippi suggesting that larger ceratopsians lived in appalachia Edited by BossMan, Jake, Jun 7 2017, 11:02 AM.
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| babehunter1324 | Jun 7 2017, 03:15 PM Post #2 |
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That Ceratopsid tooth... I've been reading about it for 2 years, nice to see that it's been finally published. |
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| Paleop | Jun 7 2017, 09:43 PM Post #3 |
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Paleopterix
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Tyrannosaurus was still likely feathered the scale placement on the rex's neck was ventral, and all the tail scales were found on the lower half. there's quite a bit of room for feathers left |
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| Galliwasp | Jun 8 2017, 04:10 AM Post #4 |
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There is a way out. Just not for you.
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Yeah, I'm annoyed that they ("they" being the researchers, of all people - no sensationalist journalism this time) used skin impressions you could hold in your hand to conclude that the animal wasn't feathered -at all-, because thermoregulation (thereby forgoing everything that's already been discussed regarding air sacs and greater surface areas and metabolic efficiency).
Edited by Galliwasp, Jun 8 2017, 04:11 AM.
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| Incinerox | Jun 8 2017, 08:26 AM Post #5 |
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Āeksiot Zaldrīzoti
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They never specified where on the neck the scale samples came from, and you forgot to mention the scale patch that came from the ilium. The one diagram with any info on the neck scales seems to imply they came from the back of the neck though. Not a confirmation, but based on how they marked down locations of scale samples from other species in the supplementary content, that seems to be the implication. There is still quite a bit of room for feathers over the back, flanks, chest and arms as is often depicted. I'm kinda annoyed that they don't really make it all that clear though. Their diagrams are vague at best and they don't actually make any note on specifics in their descriptions. |
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| stargatedalek | Jun 8 2017, 02:45 PM Post #6 |
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I'm not slow! That's just my moe!
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I'm with Cau on this one, I'm not sold on those even being scales at all. They're highly irregular in size and they're so small these could easily be wrinkles in thick hide or even decomposition (bird skin becomes "crusty" in a very similar fashion during decomposition). |
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| Furka | Jun 9 2017, 02:32 AM Post #7 |
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I don't know much about the subject, but would it be possible that this wrinkly/scaly tissue could grow as a sort of scar tissue over wounds, replacing feathers ? Also it's cool to hear about the Applachian ceratopsid. Edited by Furka, Jun 9 2017, 02:58 AM.
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| stargatedalek | Jun 9 2017, 11:24 AM Post #8 |
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I'm not slow! That's just my moe!
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I suppose it's possible. These are very unusual patterns. Exclusive to Tyrannosaurs and - you guessed it, Yutyrannus. Yutyrannus had a similar patch from the tail, which we know was fully concealed in very long feathers. Exactly what that means for these impressions is still unclear, we don't know if Yutyrannus long feathers concealed bald spots (like ostriches), or if these are scales they may grow in this strange way in order to allow feathers to grow among them, and of course skin decomposition, but I rather like your idea these could also represent survived injuries. |
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| Incinerox | Jun 9 2017, 11:49 AM Post #9 |
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Āeksiot Zaldrīzoti
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Honestly, everyone's freaking out over T. rex's skin when those preserved on Albertosaurus in the supplementary data link they provided are actually FAR more exciting from a technical perspective.
This is WAY more complex than what's available for T. rex. Edited by Incinerox, Jun 9 2017, 11:52 AM.
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| Ignacio | Jun 9 2017, 12:20 PM Post #10 |
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Ex Corrupt Staff
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But Albertosaurus is not famous enough to make it to headlines
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| Jules | Jun 9 2017, 12:25 PM Post #11 |
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Mihi est imperare orbi universo
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Eh, you can still market it as "Close T-Rex relative" or something. |
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| BossAggron | Jun 9 2017, 04:00 PM Post #12 |
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Formerly Dilophoraptor
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We all know that's reserved for non-Coelurosaurian dinosaurs. |
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| Paleodude | Jun 9 2017, 06:35 PM Post #13 |
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ex-Krampus
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Honestly the worst part about the Tyrannosaurus paper is how completely wrong mainstream media represented it as a nail in the coffin against feathered dinosaurs and the stupid and frankly insulting "stupid paleontologists should've just listened to JP lol" comments that spawned from those articles. If anything the scales mean very little and frankly overshadowed beyond cool stuff like the ceratopsian tooth and the early bird in amber. |
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| Paleop | Jun 10 2017, 09:36 PM Post #14 |
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Paleopterix
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good catch
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