Polar Bear vs Cryolophosaurus

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vs

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I remember saying a grizzly would shatter a utahraptor's bones like glass... not really relevant but this reminded me of that. Lol.
Anyways I think this is a 50/50 and would be an ugly one.

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@ling What do you think? How brittle were dinosaur bones, would it be relevant in combat?

[bearstrong]

The fragile dinosaur would be unable to penetrate the thick hide and blubber of the polar bear that would wrestle it down easily and rip out its throat.

[Deleted]

It depends on the true size of Cryolophosaurus.

"The holotype specimen is estimated to have reached 6–7 m (20–23 ft) long and weighed 350–465 kg (772–1,025 lb)."

"Some researchers noted that the holotype individual probably represents a sub-adult, so adults could have been larger."

01182bb5-a-62cb3a1a-s-sites.googlegroups.com/site/cryolophosaurus1/home/osteologyofcryolophosaurus.pdf?attachauth=ANoY7co94mntSd_9o3eefP85wHz2ynfTQvKhMQNAdIZyoumnStLJlkuCFE6wOc78UXxEzyKf7eoh5B7Q_gchrMoiEymFA2HDiwUdKgZfTtI7rBSvtQcOw59po7bxBLJS6npKics2ZiBxPl5gLrb5tE_fgjwFL2uNYd3-w49KLuHDvIcdirdJPAgh21lcdc77_OvOah6HbJGj-am2pnY0ofNNa_6y6ZBdpxt038pM6yuR7sppHUj-KaMxH0r11XJR8VwNGPRkdNFe&attredirects=0

Paul, Gregory S. (2010). "Theropods". The Princeton Field Guide to Dinosaurs. Princeton: Princeton University Press. pp. 67–162. 

Benson, R.; Brusatte, S.; Hone, D.; Naish, D.; Xu, X.; Anderson, J.; Clack, J.; Duffin, C.; Milner, A.; Parsons, K.; Prothero, D.; Johanson, Z.; Dennis-Bryan, K. (2012) [2009]. Ambrose, Jamie; Gilpin, David; Hirani, Salima; Jackson, Tom; Joyce, Nathan; Maiklem, Lara; Marriott, Emma; Nottage, Claire; van Zyl, Meizan (eds.). Prehistoric Life: A Definitive Visual History of Life on Earth

If the holotype is 465 kg and a sub-adult  , then I'd estimate that a mature Cryolophosaurus could be well over 500-600 kg, maybe even 700 kg. At those sizes it would win.

But also it should be noted that this dinosaurus wasn't as 'impressive' as a lot of other theropods (when compared to some others). Stomach remains have only found evidence of feeding on small, early and defenseless mammals. Remains of other dinosaurs - thought to have been eaten by Crylophosaurus,  show signs of an animal that may (just may) have possibly been a scavenger (primarily), although these are only linked towards younglings as far as I'm aware. It's unknown if adults were similar.

[oldgreengrolar]

Polar bear wins at weight parity. It is more robust and a much better grappler upclose.

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Jan 24, 2023 21:53:46 GMT Bolushi said:

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That's the sub-adult too lol. Def' favouring the dinosaur here.

[oldgreengrolar]

Jan 24, 2023 20:18:44 GMT @ling said:

The dinosaur does have a larger head and can open its jaws much wider. How does this theropod compare to an utahraptor?

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Jan 25, 2023 12:20:51 GMT oldgreengrolar said:

Jan 24, 2023 20:18:44 GMT @ling said:

The dinosaur does have a larger head and can open its jaws much wider. How does this theropod compare to an utahraptor?

Well upon the description of Utahraptor, its dimensions were estimated as much as 7 m (23 ft) in length and somewhat less than 500 kg (1,100 lb) in weight, comparable to a polar bear in body mass.

www.academia.edu/225747

Later, Rubén Molina-Pérez and Asier Larramendi in 2016 claimed that exaggerated estimates are due to multiple specimens of various ages being mixed. One particular case of nine specimens caused an overestimation of 11 m (36 ft) in length for Utahraptor.

doi.org/10.1515%2F9780691190594

Authors such as Gregory S. Paul agree in that Utahraptor is best estimated around 5.5 m (18 ft) in length and weighing up to 300 kg (660 lb).

Paul, Gregory S. (2016). The Princeton Field Guide to Dinosaurs (2nd ed.). Princeton University

A lot smaller possibly.

[Hardcastle]

I think weighing the same and being way huger is a double edged sword. Has it's pros, but has to have some cons as well surely. Like if the bear runs into it and crash tackles it, it seems it couldn't possibly have the strength to withstand the take down.

Not confidently pro bear on this at all, not even close, just offering other angles. The skull comparison looks nasty for sure, but if they really weigh the same then we have to assume the polar bear is considerably more resilient and durable.

[Deleted]

Jan 25, 2023 16:05:03 GMT Hardcastle said:

I think weighing the same and being way huger is a double edged sword. Has it's pros, but has to have some cons as well surely. Like if the bear runs into it and crash tackles it, it seems it couldn't possibly have the strength to withstand the take down.

Not confidently pro bear on this at all, not even close, just offering other angles. The skull comparison looks nasty for sure, but if they really weigh the same then we have to assume the polar bear is considerably more resilient and durable.

Depends if they are the same weight though.

[Hardcastle]

Yep.