Styracocephalus platyrhynchus vs Deinonychus antirhhopus

[Deleted]

Styracocephalus platyrhynchus

Styracocephalus platyrhynchus ("Flat-snouted spike head") is an extinct species of tapinocephalian therapsid that lived in the Capitanian of South Africa.

Styracocephalus' head ornament meant that it could be recognized from a distance. The crest stuck upwards and backwards, but there is some variation in its shape. Styracocephalus was at least around ~1.8 meters long, with a ~42-centimeter skull, and was very bulky.

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Deinonychus antirhhopus

Deinonychus antirhhopus ("Counterbalancing terrible claw") is a species of dromaeosaurid dinosaur. These dinosaurs, which could grow up to more than 3 meters long, lived about ~115–108 million years ago. Fossils have been recovered from the U.S. states of Montana, Wyoming, and Oklahoma, in rocks of the Cloverly Formation and Antlers Formation, though teeth that may belong to Deinonychus have been found much farther east in Maryland.

[Fragillimus335]

Deinonychus easily. No contest.

[Deleted]

What did you scale them by?

Btw, Styracocephalus' skull is ~42 centimeters(Haughton, 1929) at the greatest length, larger than the ~30 centimeters listed by Palaeocritti.



The proportions of S. platyrhynchus were based off of an Estemmenosuchus skeletal mount. It seems to be comparable, or even somewhat a bit larger, and almost surely more massive(non-pneumatic), then the largest known Deinonychus.

Don't forget that Styracocephalus is very bulky and has a nasty bite of it's own to boot.

[Runic]

Oct 9, 2013 21:24:21 GMT 5 @brolyeuphyfusion said:

What did you scale them by?

Btw, Styracocephalus' skull is ~42 centimeters(Haughton, 1929) at the greatest length, larger than the ~30 centimeters listed by Palaeocritti.



The proportions of S. platyrhynchus were based off of an Estemmenosuchus skeletal mount. It seems to be comparable, or even somewhat a bit larger, and almost surely more massive(non-pneumatic), then the largest known Deinonychus.

Don't forget that Styracocephalus is very bulky and has a nasty bite of it's own to boot.

You can weigh 300lbs yet if your physically dwarfed in size by a animal weighing only 150lbs the fight is much harder to win. 

[Deleted]

Deinonychus easily wins.

[creature386]

If Fragilimus size comparison is accurate, this is a greater mismatch than Carnoferox vs pliosaur.

[Infinity Blade]

Wikipedia cites a couple sources about Deinonychus' skull capable of being 41 cm in length. One of them is Greg Paul's Predatory Dinosaurs of the World, where, aside from the outdated taxonomy, he gives skull length estimates of up to 410 mm and makes the statement that the largest individual had a head approaching half a yard long (which would be 45.72 cm).

I had a slight amount of skepticism for that, but eyeballing that size comparison, assuming it's correct and that Styracocephalus' skull is ~42 cm in greatest length, I don't think that's unreasonable.

[dinosauria101]

Yeah, I favor Deinonychus, it has the tools to win.