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Post by Infinity Blade on Dec 25, 2013 4:26:13 GMT 5
Inostrancevia alexandriInostrancevia is a genus of extinct, carnivorous therapsid, containing the largest members of the family Gorgonopsidae, predators characterized by long, saber-tooth-like canines. It lived during the Upper Tatarian stage, Vyatskian Horizon of Russia corresponding to the Changhsingian stage of the Late Permian period of the ICS, dating from approximately 254 to 252 mya. It was found in the Sokolki Assemblage in Arkhangelsk Oblast and is known from several skulls and two almost complete skeletons. The species in Inostrancevia were the largest gorgonopsids known, with total body lengths reaching 3.5 m (11 ft 6 in) and long, narrow skulls up to 60 cm (24 in) long. Like several other gorgonopsids, Inostrancevia was characterized by strongly developed canine teeth, with those of the upper jaw up to 15 cm (5.9 in) long, the root corresponding to half its length. Their bodies were slender, with rather short legs. Inostrancevia shared its habitat with Scutosaurus which it likely preyed upon. Weighs about 150-200 kilograms? Dinocrocuta giganteaDinocrocuta is an extinct genus of hyena-like feliform carnivores. It lived in Asia, and Africa, during the Miocene epoch. It had very strong jaws that were able to crush bones. Its estimated weight was roughly 400 (unlikely) 150-200 kilograms.
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Post by Infinity Blade on Dec 25, 2013 4:46:28 GMT 5
I have to give this one a 50/50, as I don't see how one has an advantage over another. That may change if one wasn't at the sizes listed in the OP, or if one is dimensionally larger or more powerful looking in a size comparison.
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blaze
Paleo-artist
Posts: 766
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Post by blaze on Dec 25, 2013 6:45:00 GMT 5
Original description of the first known skull of D. gigantea: Qiu et al. 1988. Discovery of the Skull of Dinocrocuta gigantea.Vertebrata PalAsiatica 26(2). 128-138.Greatest length of skull 38cm, basal length 32cm, this measurements are within the range of those of average male african lions (at least from what I've read, Haas et al., 2005), this specimen at least, was not 400kg, not even close. I do not know if there are bigger skulls or teeth or if the taxon is known from anything more than skulls and teeth, the same goes for its ancestor/close relative Percrocuta, another thing to keep in mind is that Percrocutidae does not appear to be closely related to Hyaenidae, meaning that common depictions of a giant hyaena are extrapolating their cranial similarity to their bodies when there might not be any evidence of it, on top of that, the cursorial dog-like body of modern hyaenas is a derived character, basal hyaenas were mangoose-like.
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Carcharodon
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Post by Carcharodon on Dec 25, 2013 8:23:49 GMT 5
Inostrancevia wins due to large size advantage. ^
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blaze
Paleo-artist
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Post by blaze on Dec 25, 2013 10:14:43 GMT 5
Link
Another paper on Dinocrocuta, describing another, larger skull, 41cm total length, 33.5cm in basal length, it still is "lion sized", there's also postcranial material, I was wrong, it did have a hyena like body. But still small compared to Inostrancevia latifrons.
I couldn't find any more papers about Dinocrocuta on the ivpp website but there's a brief blogpost about a recent discovery, a complete skeleton of an specimen with a 43cm long skull, (link), head-body length is 1.8-9m. IMO, unless there's a specimen with a 50cm-60cm long skull there's no way D. gigantea ever reached 400kg, it's lion sized, well, large-ish lion sized but still.
Against I. alexandri will probably be a better match up, though IMO I. alexandri and I. latifrons are probably synonymous (along with another "small" gorgonopsid whose name I forgot) they were sympatric and very similar, IIRC the most important difference between them is size.
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Post by Infinity Blade on Dec 25, 2013 17:59:22 GMT 5
Wouldn't Inostrancevia alexandri be somewhat too small if Dinocrocuta was the size of a large lion?
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blaze
Paleo-artist
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Post by blaze on Dec 25, 2013 21:59:34 GMT 5
The skull of Dinocrocuta is the size of that of a large lion, its body on the other hand is not, ~1.8 in head body length is average, Dinocrocuta also doesn't appear to have particularly robust limbs, the second paper I linked compared the new specimen with Hyaena sinensis, the skull was 60% wider, 20% longer but the humerus was only 2% wider and 6% longer, I know I've said I. alexandri was the size of a large Jaguar but that was based on shoulder height, I ignored the head body lenght of 1.9m.
Both I. alexandri and D. gigantea appear to be anything from 150 to 200kg, Dinocrocuta will be taller at the shoulder though.
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Post by Infinity Blade on Dec 26, 2013 5:45:47 GMT 5
You want me to change it to Inostrancevia alexandri?
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blaze
Paleo-artist
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Post by blaze on Dec 26, 2013 8:11:06 GMT 5
Change it? if you want to, I was just saying haha
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Post by creature386 on Dec 26, 2013 14:52:53 GMT 5
I have now replaced latifrons with alexandri, I hope it's more balanced now. I also hope you guys have no problem with it.
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Post by Infinity Blade on Dec 26, 2013 17:42:30 GMT 5
It's a lot more balanced now, so I have absolutely no problem.
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Deleted
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Post by Deleted on Mar 27, 2018 10:23:41 GMT 5
Yeah, and now I'm not so sure who will win.
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Post by creature386 on Mar 28, 2018 0:38:35 GMT 5
50/50, leaning towards Inostrancevia, due to more impressive canines bias.
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Post by dinosauria101 on Feb 12, 2019 21:38:28 GMT 5
I favor the gorgonopsid, it's got the deadlier bite and is likely more durable
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