#grawr is a hashtag on Twitter that was "hijacked" by Ed Yong, Brian Switek, and a bunch of other dinosaur fans to discuss dinosaur "facts" that have no basis in reality.
For example - "It is increasingly clear to me that Anomalocaris was a Triceratops. They just haven't rearranged the bits correctly yet. #GRAWR" Or one of my favorites, "Dimetrodon sails absorbed energy that could be redirected into its laser-eyes."
Okay, so these animals, known as "sauropods" have skulls with very strange holes in them. But most restorations simply cover them with skin. I think that instead of being bare, their skulls supported some fancy soft-tissue structures, but I cannot be sure of their nature.
Okay, thanks for educating me; I know a little bit about a lot of things, but paleontology -- or biology for that matter -- has never been my field of generalization (as opposed to specialization, because that's not how I roll). However, I HAVE read a ridiculous amount of sf, so I feel qualified enough to draw random-ass conclusions.
Possible explanations: - the foramina (had to look up the plural of "foramen") discovered in the skull weren't natural; instead, they were drilled at hatching to provide access to the brain, for cybernetics. (Incredibly unlikely, but it means cyborg dinosaurs, so thus cool.) - another kind of sensory organ set into the head was located there; the closest analogue I can think of is sharks' electricity-sensing-thingy. - those critters had four eyes. - that's where the miniature pilot sat who controlled their biological-dinosaur-mecha.
Also, I finally found the image this reminded me of: [link]
I tend to agree...I meant to tell you, I got a chance to see a Mamenchisaurus in person a while back ([link]), and my impression was exactly what you'd suggested, that there was something very specific and anatomically weird going on with those lateral cervical rays. At the time I was thinking of repurposing them into something fanciful like lateral Amargasaurus spines, but when you posted that drawing with the system of pneumatic sacs I thought, Yeah, you know, that might be right on. Apologies if I'm repeating myself here but it's something I wanted to mention, I thought you might appreciate the independent (layman's!) confirmation or at least suspicion about those weird neck features.