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JELSIN's avatar

Balaur bondoc arboreal yesterdays

my second drawing for "all your yesterdays" in which I propose a different position to the first finger of the famous Balaur's foot, in this position might better grasp the branches of the trees, that would also explain the atrophy of the third finger of the hands, perhaps allowing the appearance of longer feathers , to this I have added the probability of that Balaurs go up the prey to the trees as the actual leopards do .
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MyeongKD's avatar

Hallux! A bird!

Escritora2Aliasfox's avatar
Terizinosaurus's avatar
This one seems highly likely.
JonaGold2000's avatar
Saurophagus's avatar
Wow, this may just be the coolest and most probable all yesterdays entry I've seen!
PonchoFirewalker01's avatar
Makes sense. Now that I think about it, the two-clawed deal reminds me a bit like the koala's thumb(s). :)
Kazuma27's avatar
Almost like i imagine Balaur to be, except i envision him as an omnivore; super-neat concept by the way! :)
pilsator's avatar
I concur with Emily on the hallucal range, but it sure looks badass!
Saberrex's avatar
I like this idea a lot. it seems quite plausible. the top predator of Hatzeg would be all the more dangerous if it was dragging kills into trees or ambushing prey from those trees.
RickCharlesOfficial's avatar
I doubt Balaur was the top predator of Hatzeg with Hatzegopteryx around...

The theropod cowers and the pterosaur reigns supreme.

Seems Hatz was specialized for killing even the adult sauropods in the area.
Saberrex's avatar
Hatzegopteryx preferred fox-sized dinosaurs as prey, that way it could still take off after eating. Balaur could probably take down grown Rhabdodon and subadult Magyarosaurus.
An 2013 study found that no, this thing is a terror-bird like apex predator. It was built like a combination weightlifter-sprinter. It also had a shorter, very robust neck to grapple with prey.
Saberrex's avatar
seriously? Hatzegopteryx?
Yes. It was built nothing like Quetzalcoatlus. Its body was seriously beefed up, with an extremely robust skull ten feet long at least.
Meaning it is easily the most frightening terrestrial predator of all time.

Giant giraffe-stork-carnosaur of death, anyone?
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RickCharlesOfficial's avatar
In defense of Hatzegopteryx it could have easily bullied around the other inhabitants of Hațeg Island, effortlessly snatching up their infants and juveniles, and scaring off smaller predators (including Balaur) from kills to scavenge the remains. Maybe Hatzegopteryx wasn't exactly the "top predator," but it was certainly the "top dog." Such a freak of nature must've had a relatively dominant life amongst dwarfs, you'd think.
Saberrex's avatar
perhaps. i doubt it would bother a Balaur though, considering the bites of dromaeosaurs are likely comparable to similar-sized alligators (as was confirmed with Deinonychus), i do not believe a Hatzegopteryx would confront one or a family group of them. they probably avoided each other overall, especially considering the pterosaur's delicate wing bones.
RickCharlesOfficial's avatar
Dromaeosaur bites are likely comparable to similar-sized alligators? That seems a rather extraordinary claim. I don't think dromaeosaurs had the jaw structure or musculature for that. Do you have a source?
Saberrex's avatar
The Journal of Vertebrate Paleontology from 2010. fossil evidence has appeared in the form of Tenontosaurus bones that have deep puncture wounds from the teeth of a large Deinonychus. as Deinonychus rarely bit into bone, it is likely this was a killing or debilitating bite. the toothmarks reveal the bite was on par with that of a similar-sized alligator. Now imagine what the bite force was for Velociraptor, Dromaeosaurus, Balaur, or a 20-foot, possibly up to 36-foot long, maybe two-ton Utahraptor.
RickCharlesOfficial's avatar
What was the title of the publication and who were the authors? I want to check out the paper for myself, and while knowing it was in a 2010 issue of The Journal of Vertebrate Paleontology is helpful, it's not near specific enough for me to track it down.

I'm not sure where you're getting your information about dromaeosaurs from, for example Utahraptor could have hardly been 1,000-1,100 pounds in weight. Even a potential 36-foot specimen wouldn't have near approached just one ton in weight. There is no logic behind a two ton (4,000 pound) Utahraptor. Dromaeosaurs weren't robust killing machines, they were relatively delicate predators. You wouldn't look at one and think two-legged crocodile, you'd think bird.
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