Fragillimus335
Member
Sauropod fanatic, and dinosaur specialist
Posts: 573
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Post by Fragillimus335 on Aug 13, 2013 23:50:33 GMT 5
Hadrosaur Diversity...  |
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Deleted
Deleted Member
Posts: 0
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Post by Deleted on Aug 29, 2013 5:59:45 GMT 5
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Post by Grey on Aug 30, 2013 2:48:29 GMT 5
Tyrannosaurus skeletal reconstruction by Hartman with Livyatan skull reconstruction. Awaiting any comment. 
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Post by Grey on Aug 30, 2013 5:53:38 GMT 5
Well, T. rex is the largest tyrannosaurid and one of the largest carnivorous dinosaurs whereas Livyatan represents the largest tetrapod bite and one of the largest macro-predators ever. Indeed no contest.
Even the largest pliosaurs look pathetic compared to Livyatan.
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Post by Grey on Aug 30, 2013 9:21:05 GMT 5
Tyrannosaurus recontruction by Scott Hartman with Pliosaurus kevani head graphic depiction by Adam Stuart Smith. 
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blaze
Paleo-artist 
Posts: 766
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Post by blaze on Aug 30, 2013 11:30:14 GMT 5
According to the supplementary information of Lambert et al (2010), the skull of Livyatan is actually 2.9m long ;D haha
Indeed an increadibly impressive skull and defintely, physiteroids have giant heads, is incredible that the total length of Livyatan is only 1m longer than Sue. Compared to the P. kevani, Sue's skull doesn't look that bad.
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Dakotaraptor
Junior Member
Used to be Metriacanthosaurus
Posts: 193 
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Post by Dakotaraptor on Aug 30, 2013 13:39:02 GMT 5
 Someone's (most) favorite animal and least favorite dinosaur in this size comparison. The Spinophorosaurus is paratype, probably around 13 % bigger than sub-adult specimen with 1215 mm femoral (this one is ~ 137 cm) . |
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Post by Grey on Aug 30, 2013 20:50:49 GMT 5
According to the supplementary information of Lambert et al (2010), the skull of Livyatan is actually 2.9m long ;D haha Indeed an increadibly impressive skull and defintely, physiteroids have giant heads, is incredible that the total length of Livyatan is only 1m longer than Sue. Compared to the P. kevani, Sue's skull doesn't look that bad. 2.97 m exactly. Don't forget that 13.5 m TL estimate is the lower bound in Livyatan estimated size. In anycase, the whale was in the size range of the modern sperm whale. Not surprisingly, pliosaurs skull are quite flat. McHenry showed that a 1,8 m long Kronosaurus skull had less volume than the skull of Sue. |
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blaze
Paleo-artist
Posts: 766
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Post by blaze on Aug 31, 2013 3:15:58 GMT 5
Actually 2.94m haha unless my PDF has typos
Yeah, but I kind of lean more to that estimate based on similarly sized spearm whales rather than the much smaller Zygophyseter but who knows, maybe it actually was in the 16m+ range.
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Post by coherentsheaf on Aug 31, 2013 3:42:32 GMT 5
Actually 2.94m haha unless my PDF has typos Yeah, but I kind of lean more to that estimate based on similarly sized spearm whales rather than the much smaller Zygophyseter but who knows, maybe it actually was in the 16m+ range. Even then the original estimate is problematic, since the original dataset had an individual strongly influencing the regression line. |
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Post by Grey on Aug 31, 2013 3:57:45 GMT 5
Excluding that individual (note there was another individual large but thinner headed influencing the regression line in the other way), the mean value of the others was in the 14-15 m range, which sounds safe.
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Post by coherentsheaf on Aug 31, 2013 5:03:17 GMT 5
Excluding that individual (note there was another individual large but thinner headed influencing the regression line in the other way), the mean value of the others was in the 14-15 m range, which sounds safe. the other indiviudal had not a strong leverage on the regression line compared to the one that should be excluded. |
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Post by Grey on Aug 31, 2013 6:24:30 GMT 5
Yes but by this logic you can then start to segregate the higher ends, as there are only two individuals falling in the 15.5-16 m range. All the others are much nearer in size each others. While the smallest estimate may be quite small, I don't think there is enough reason to segregate it, and no wonder Lambert et al did not.
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Post by Grey on Aug 31, 2013 10:24:36 GMT 5
Pliosaurus funkei I'd appreciate the guys stop to use that manga girl as human shape in scale comparisons...
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blaze
Paleo-artist
Posts: 766
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Post by blaze on Aug 31, 2013 11:58:16 GMT 5
I second that notion.
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