The link that you provided shows a skull that's probably from something OTHER than Yangchuanosaurus (by which I mean Y. shangyouensis)

If you need tips, there's always Predatory Dinosaurs of the World, which has the exact sort of scene you describe illustrated (though some details are a bit dated and I don't think you want to simply copy Greg Paul).

Yanchuanosaurus actually looked like this: [link]

Similar to Allosaurus with those horns but in addition it also had the pair of snout ridges.

As for Mamenchisaurus and Omeisaurus... both of them were vertical-necked animals. Despite their bifid neural spines, their neck structure is functionally VERY different from Diplodocids and much more like Camarasaurs and Brachiosaurs (long cervical ribs, low neural spines relative to length, lack of reverse-sloping lower cervical spines, and lack of spheroid spinal tips).

Believe me, Kent Stevens has nothing on these guys.

I doubt they held their necks at a 45-degree angle unless for a moment they were lowering their head to feed on something rare (or to dodge bullets... XD)

Greg Paul used to restore all macronarian necks totally vertical, but recently he changed that to a 70 degree angle rather than a straight 90 degree one. I actually think his older version is still more valid for long term posture. It causes a LOT less stress on the neck muscles over long durations.

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I'd say it could depend on the species. With the super-fuzzy little winged ones, I recommend a bare nose and a GRADUAL appearance of downy feathers as you move back along the snout. With other ones that are less birdlike, such as Buitreraptor, leave snout naked or start the feathers on that vertical ridge in front of the eyes.

Velociraptor looks good this way too.

Once you get to Utahraptors, just leave the whole face naked. These guys plunged their heads into freshly killed carcasses, so the less fuzz the better. Their necks could still use a very light feathering though - these guys have much bigger snouts than vultures so a naked neck might be a bit much.

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I'm still deciding, though come to think of it, I haven't been considering too many diplodocids since the titanosaurs have been flooding my brain. I want to do an Apatosaurus (and possibly an Amphicoelias) and I probably will... Come to think of it, Supersaurus sounds like a good possibility too!

...the thing is, Mr. Bond...
that it may not be for the live blogging thing tomorrow. (I've got about 5 sauropods planned and two pieces already completed, so it really depends on having the scene mapped out).

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