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purplecat

A two legged, very upright, dinosaur skeleton with a long neck, smallish arms and large ribs. About twice as tall as the man in an overall who stands looking up at it. The background is black and the two figures are picked out with a pale light.

A Plateosaurus skeleton. Image stolen from The Great Dinosaur Discoveries by Darren Naish.

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From:

spiralsheep

Triassic sauropods are the best sauropods! The only triassic fossils I've found are Planolites but at least we know what they were formed by and their paleoecology.

From:

purplecat

B. did a bit of work on Argentinosaurus at one point - mostly, I think, trying not to let his skeptism about its size show (he thought there were some quite generous gaps in the way it was mounted).

From:

spiralsheep

Cretaceous dinos aren't my thing but, yes, Argentinosaurus is rather sparsely represented in fossil finds, and gentle skepticism rarely does any harm in science.

Size isn't everything. I like the Triassic weirdos, and evolutionary oddities generally.

From:

ysabetwordsmith

That is so cool. I love the upright pose -- tricky to rig!

From:

purplecat

I imagine so, and one wonders quite how they decided it walked so upright (though, I assume the answer is biomechanics).

From:

ysabetwordsmith

The hip joint is the most important, followed by the knee joint and shape of leg bones; the pelvis and foot can also be helpful but are less conclusive. If you're curious, look at the study of stance in the hominid family tree, where it's a crucial factor; those sources often go into more detail than the ones for dinosaurs.

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purplecat

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