Comment on Concavenator Skeleton by Franz-Josef73
Very nice work! Did you do this in inkscape?
I think the awkward spines may have been connected to those of the tail at least by a muscular hump or ridge, even if there were no spinous processes reaching above the ilium. That may have had some use in aiding the pulling motion executed by the M. caudofemoralis lungus (when it retracted the femur against the hemal processes) in flexing the tail base slightly upwards (giving a better leverage and additional power to the ventral musle). Or perhaps even leg muscles attached there directly (tough that seems less likely).
I think the awkward spines may have been connected to those of the tail at least by a muscular hump or ridge, even if there were no spinous processes reaching above the ilium. That may have had some use in aiding the pulling motion executed by the M. caudofemoralis lungus (when it retracted the femur against the hemal processes) in flexing the tail base slightly upwards (giving a better leverage and additional power to the ventral musle). Or perhaps even leg muscles attached there directly (tough that seems less likely).
Hey thanks. I used Adobe Illustrator. I agree the spines look like they support some big ligament or muscle structure. I'd be interested to see what a detailed anatomical study would come up with.