No problem! Always glad to be of assistance 
True... but not so abrupt or with a dorsal neural spine so laterally bent out of shape.
Good show
True... but not so abrupt or with a dorsal neural spine so laterally bent out of shape.
Good show
There is something that come into my mind when I thought about the possibility of the double-sail.
Could it be that, because of the gap into the sail, the tail is more flexibel and more usefull for swimming?
Could it be that, because of the gap into the sail, the tail is more flexibel and more usefull for swimming?
The gap is over the first sacral vertebrae. I doubt that such an arrangement had much bearing on the tail's flexibility.
Thanks for the assessment