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| Extinct Animal Questions | |
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| Topic Started: Nov 26 2013, 10:24 PM (193,341 Views) | |
| Acinonyx Jubatus | Nov 5 2015, 02:30 PM Post #2296 |
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I AM THE UNSHRINKWRAPPER!
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That is indeed the currently accepted hypothesis, though as far as I know, no detailed study has been done. |
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| heliosphoros | Nov 5 2015, 02:33 PM Post #2297 |
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That's the idea. It's speculated that the wing pycnofibers had the same function as the silencing structures in owl wing feathers.
Unlike (most) mammals, pterosaurs have massive wing membranes that could disperse heat, so I doubt even massive pterosaurs had anything less than a thick pelage on their bodies. No need to loose "fur". |
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| BossMan, Jake | Nov 6 2015, 02:24 PM Post #2298 |
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Son of God
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Hypothesis/Question So in the hell creek we have 2 triceratops species, T. Horridus and T. Prorsus. Horridus has only 4 good specimens compared the the large amount of Prorsus. But could it be possible the two represent the sexes of one animal? My evidence for this is in size and skull shape T. Horridus had a slightly larger frill and longer brow horns compared to T. Prorsus which were smaller. Also the two have been calculated at different weights 15.1 tons vs 12.6 tons (these represent the maxes). Also what if Triceratops lived like elephants. Females and thier young lived in herds while males were solitary. This (if my hypothesis is correct) would explain why so many T. Prorsus have been found next to the near hard to find T. Horridus. So just curious does this sound like a good question or are there to many variables. |
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| Furka | Nov 6 2015, 03:52 PM Post #2299 |
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Aren't the two found in different stratas tho ? IIRC Horridus is older. |
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| BossAggron | Nov 6 2015, 04:00 PM Post #2300 |
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Formerly Dilophoraptor
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Triceratops horridus is the direct ancestor of Triceratops prorsus. |
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| CyborgIguana | Nov 6 2015, 04:24 PM Post #2301 |
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Does that mean Torosaurus may in turn be the ancestor of Triceratops horridus, since it's older than both species IIRC?
Edited by CyborgIguana, Nov 6 2015, 04:24 PM.
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| BossAggron | Nov 6 2015, 06:28 PM Post #2302 |
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Formerly Dilophoraptor
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http://saurian.maxmediacorp.com/?p=551 pretty much as far as we know. |
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| Paleop | Nov 13 2015, 05:43 PM Post #2303 |
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Paleopterix
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where may i find any information on the hell creek therizinosaur? (someone asked me for a source) |
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| Furka | Nov 13 2015, 05:46 PM Post #2304 |
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I don't know if there's much on it, since it's known only from an astragalus and IIRC I've seen a comment on the Saurian site saying that it might not even be Therizinosaur material, but another bone (forgot which one) from a Tyrannosaur. |
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| babehunter1324 | Nov 13 2015, 05:50 PM Post #2305 |
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Yep that's also the latest info I got on the "Therizinosaurus astragalus" it wasn't actually Therizinosaur material. |
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| Paleop | Nov 13 2015, 05:58 PM Post #2306 |
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Paleopterix
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so any hell creek therisinosaur would be purely hypothetical until an actual fossil is found..... what about the Alaskan therizinosaur foot prints? are they from the Maastrichian? |
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| Kaiju Groupie | Nov 13 2015, 10:36 PM Post #2307 |
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There is a cervical (neck bone) attributed to a therizinosaur in the contemporary Scollard Formation of Alberta, Canada. |
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| TheToastinator | Nov 17 2015, 05:32 PM Post #2308 |
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A piece of toast and a terminator.
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What animals lived alongside Mosasaurus hoffmanni? |
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| Incinerox | Nov 17 2015, 06:47 PM Post #2309 |
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Āeksiot Zaldrīzoti
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Well, Mosasaurus hoffmannii was more or less global (occurring in European and North American waters, with related species in Japan and New Zealand), so any end-cretaceous marine species would work in your favour. |
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| BossMan, Jake | Nov 17 2015, 07:43 PM Post #2310 |
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Son of God
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Speaking of animals in the Cretaceous seas. Did elasmosaurus or any large plesiosaur live around the European islands around 80 mya? |
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