More on Spinosaurus' Posture

[suspsy]

http://theropoda.blogspot.ca/2017/02/the-rise-of-bipedal-spinosaurus.html?spref=tw&m=1

Interesting. Hope your computer is able to translate Italian!

[GasmaskMax]

http://theropoda.blogspot.ca/2017/02/the-rise-of-bipedal-spinosaurus.html?spref=tw&m=1

Interesting. Hope your computer is able to translate Italian!

It can't.

[Cloud the Dinosaur King]

Even though a Spinosaurus fossil was found that was 40% complete, it is still very mysterious.

[GasmaskMax]

Even though a Spinosaurus fossil was found that was 40% complete, it is still very mysterious.

Very true.

[Sigmasaurus]

Even though a Spinosaurus fossil was found that was 40% complete, it is still very mysterious.

Agreed.

[Dinoguy2]

Very interesting. I hope he publishes this stuff. There's a very solid testable hypothesis in there. The leg proportions of Spinosaurus match those of birds that walk more upright. I bet Spinosaurus was actually a Godzilla-posed tail dragger and Stromer got it right with his first skeletal!

[Cloud the Dinosaur King]

Very interesting. I hope he publishes this stuff. There's a very solid testable hypothesis in there. The leg proportions of Spinosaurus match those of birds that walk more upright. I bet Spinosaurus was actually a Godzilla-posed tail dragger and Stromer got it right with his first skeletal!

It probably wasn't able to do that but it's a possibility.

[Reptilia]

What is the actual consensus for the Serano & Ibrahim reconstruction? I mean, since they pulled it out seems that all average dino fans take for granted the new look of Spinosaurus, but in the scientific community how's that regarded?

[CrypticPrism]

As far as I'm concerned, it's in between Ibrahim and 2012.

[SpartanSquat]

Are you reffering to the look? I think the closest look could be the Spinosaurus seen in Ricardo Delgado Age of Reptiles Ancient Egyptians



If you read the Graphic Novel, you will see the Spinosaurus change from bipedal locomotion to quadrupedal locomotion

[CrypticPrism]

Yes, in look and posture. I think the general consensus is that it was bipedal.

[AcroSauroTaurus]

Its pretty much decided that Spinosaurus was bipedal, and that the spines supported muscles to suspend the front half of the body, as well as walking in a more upright stance. However, we don't even know if the new remains are of Spinosaurus or Sigilmassasaurus, different species in a family can be very different from each other.

[Neosodon]

Its pretty much decided that Spinosaurus was bipedal, and that the spines supported muscles to suspend the front half of the body, as well as walking in a more upright stance. However, we don't even know if the new remains are of Spinosaurus or Sigilmassasaurus, different species in a family can be very different from each other.

What, I read a national geographic not long ago were it was concluded that Spinosaurus was to front heavy to be bipedal. It lumbered around on all fours on land but was quick and deadly in the water like a crocodile. And now it's pretty much decided it was bipedal?

Yes, in look and posture. I think the general consensus is that it was bipedal.

And now everyone is confident it was bipedal because of this one article? Is there any other support besides this. If a bipedal Spinosaurus is the new generally accepted scientific understanding then it seems like it would be bigger news.

[CrypticPrism]

spinosaurus is too fragmentary for the census to be very big. Plus, it's just basic logic that a theropod couldn't be quadrupedal.

[Reptilia]

What, I read a national geographic not long ago were it was concluded that Spinosaurus was to front heavy to be bipedal.

That's what I mean when I say that most people take for granted the new reconstruction.

[CrypticPrism]

Yes, but National Geographic made a 2 hour long documentary sucking up to a fake genus.

[stargatedalek]

Yes, but National Geographic made a 2 hour long documentary sucking up to a fake genus.

They also made a documentary about feathering Tyrannosaurus that featured half-feathered dromaeosaurs and oviraptorosaurs with pronated wrists. They aren't exactly a great source.

However, the actual paper generally agrees with their Spinosaurus documentary.

[Cloud the Dinosaur King]

Yes, but National Geographic made a 2 hour long documentary sucking up to a fake genus.

They also made a documentary about feathering Tyrannosaurus that featured half-feathered dromaeosaurs and oviraptorosaurs with pronated wrists. They aren't exactly a great source.

However, the actual paper generally agrees with their Spinosaurus documentary.

The Spinosaurus in the documentary was shown to be able to stand up on its own two feet quite easily and on more than one occasion(48:31 and 50:17).

[Halichoeres]

For what it's worth, the paleontologists that I know personally have a low opinion of the Ibrahim reconstruction, but I don't know that any of them has examined the material themselves.

[Lanthanotus]

Hmm, Google translate fails to transfer the content into an unmistakable text. Knowing the Ibrahim paper but basically nothing more deepr on the matter, with a plain look on the skeletal reconstruction in the blog I fail to see how a creature like that could locomote in an bipedal stance. There's so lot of mass in front of the hind legs, that - no matter how many muscles where attached to the sail (if any) - the tail would have to be unproportionally enormous, a "simple" strong and broad crocodile tail would not suffice on that. If the skeletal reconstruction of Ibrahim is correct, I personally think that Spinosaurus on land looked more like this and moved as big crocs do today: capable of walking quadrupedal and upright for a short distance, but most times just pushing their heavy bodies over the ground with mainly their hind limbs. After all, what good would be a bipedal stance on such tiny feet (compared to the expected mass) when the animal would need to go from water over soft muddy ground to land?