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Post by dinosauria101 on Dec 1, 2019 19:34:17 GMT 5
Atlantic Walrus - Odobenus rosmarus rosmarus  upload.wikimedia.org/wikipedia/commons/thumb/2/22/Pacific_Walrus_-_Bull_%288247646168%29.jpg/1024px-Pacific_Walrus_-_Bull_%288247646168%29.jpg Order: Carnivora Family: Pinnipeda Length: 2.9 meters Mass: 900 kg Diet: Shellfish Killing apparatus: 2 tusks One of the largest of all pinnipeds. Found across the northern hemisphere and was once commerically hunted. Dakosaurus maximus  upload.wikimedia.org/wikipedia/commons/thumb/c/c2/Dakosaurus2.jpg/800px-Dakosaurus2.jpgOrder: Thalattosuchia Family: Metriorhynchidae Length: 4-5 meters Mass: 450-910 kg Diet: Marine reptiles and fish Age and Location: Late Jurassic to Early Cretaceous, 157-137 million years ago, Europe Killing apparatus: Slicing jaws One of the largest of the metriorhynchids. Had very large, serrated teeth and is thought to have had salt glands to help cope with oceanic conditions. |
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Post by Infinity Blade on Dec 1, 2019 20:30:29 GMT 5
The body mass range for Dakosaurus is interesting. Where does it come from?
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Post by dinosauria101 on Dec 1, 2019 20:51:29 GMT 5
Well, after looking closer, I couldn't actually find a citation for it.
That said, based on modern crocodilians, 450-910 kg isn't really unreasonable for an animal of this length, so I think it might hold up
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Post by Infinity Blade on Dec 1, 2019 20:55:01 GMT 5
I'm not sure if modern crocodilians are the best proxies for Dakosaurus' body proportions and mass.
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Post by dinosauria101 on Dec 1, 2019 20:59:04 GMT 5
Well, it does seem to be a decently robust animal - comparable to modern crocodilians. At least that's what these images seem to suggest:   |
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denis
Junior Member
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Post by denis on Dec 1, 2019 23:23:49 GMT 5
Dakosaurus would win, there’s also a possibility in my point of view that the marine crocodile is warm blooded.
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Post by dinosauria101 on Dec 2, 2019 0:26:47 GMT 5
I'd favor Dakosaurus too - more mobile, more agile, and can cripple the walrus with several good bites denis, warm blooded? Interesting! Where did you hear that? |
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Post by DonaldCengXiongAzuma on Dec 2, 2019 17:52:35 GMT 5
The Dakosaurus will win easily. It has slicing bite and has jaws that can open wide. The walrus tusk might have some effect but the dakosaurus has thick skin. Walrus tusk might be powerful enough to kill land mammals but death is rare in a fight between two bull walruses.
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Post by 6f5e4d on Dec 2, 2019 18:12:24 GMT 5
Dakosaurus will win, as it has a stronger bite and is heavier than the Atlantic walrus.
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Post by dinosauria101 on Dec 2, 2019 18:15:52 GMT 5
It's not heavier - about ~680 kg compared to 900 kg. Nonetheless, I agree it wins. Here's a size comp (Walrus by Prehistoric Fauna, Dakosaurus from Wikimedia Commons)  |
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denis
Junior Member
Posts: 195
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Post by denis on Dec 2, 2019 18:36:18 GMT 5
I'd favor Dakosaurus too - more mobile, more agile, and can cripple the walrus with several good bites denis , warm blooded? Interesting! Where did you hear that? It’s just speculation. I mean Mosasaurs are closely related to monitor lizards but they are warm blooded, it’s likely that since they live in open seas they became warm blooded so they don’t get cold at night, unlike turtles, they can’t go onto land. |
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Post by Infinity Blade on Dec 2, 2019 19:05:28 GMT 5
Saying that the Dakosaurus' stronger bite is an advantage is kind of like saying Tyrannosaurus has an advantage over an elephant because it has a stronger bite.
Now, you could argue that it has superior weapons to the walrus.
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Post by dinosauria101 on Dec 2, 2019 20:17:42 GMT 5
I'd favor Dakosaurus too - more mobile, more agile, and can cripple the walrus with several good bites denis , warm blooded? Interesting! Where did you hear that? It’s just speculation. I mean Mosasaurs are closely related to monitor lizards but they are warm blooded, it’s likely that since they live in open seas they became warm blooded so they don’t get cold at night, unlike turtles, they can’t go onto land. Well, I wouldn't consider it baseless - many early reptiles are considered warm blooded, and some sea turtles are mesotherms. A warm blooded Dakosaurus is fairly reasonable. Infinity Blade, you do have a point there. The walrus may actually have a stronger (shellfish-crushing) bite, but the Dakosaurus' jaws are likely superior to both the walrus' jaws and tusks. |
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Post by kekistani on Dec 6, 2019 13:49:35 GMT 5
I'd favor Dakosaurus too - more mobile, more agile, and can cripple the walrus with several good bites denis , warm blooded? Interesting! Where did you hear that? It’s just speculation. I mean Mosasaurs are closely related to monitor lizards but they are warm blooded, it’s likely that since they live in open seas they became warm blooded so they don’t get cold at night, unlike turtles, they can’t go onto land. Interestingly enough, sea turtles don't sleep on land, they find a crevice or overhang and tuck in for the night, surfacing to breathe sporadically. I feel that these large marine reptiles probably slept like whales, floating at the surface and breathing in every now and then like sea turtles. I am of the opinion that sea-crocs were cold blooded. |
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Post by kekistani on Dec 6, 2019 13:50:10 GMT 5
Gonna give this to dakosaurus. The arsenal it has simply outguns the walrus. I can't get over how stupidly scary that head is for such a 'small' animal.
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