Proximal to medial part of tail (right lateral), showing caudals 1-17 and part of Ca18. Chevrons 16/17 and 17/18 are visible forked in lateral view; 15/16 does not appear to be, and shows less anteroposterior flaring at its distal end than does 14/15. As 12/13 shows distinct signs of distal forking, this must be written off either as a preservational artifact or as incorrect mounting.