SEMs of Ophiophragmus filograneus A dorsal view of vertebra near disk, width 2 × length and moderately fenestrated B ventral view of vertebra near disk, wide and fenestrated, elongated median process C proximal face of vertebra from near disk, arches radiate outward from ventral processes D distal face of vertebra from near disk, arches radiate outward from dorsal processes E dorsal (left) and ventral (right) views of vertebrae from near distal end of arm, width nearly same as length F distal face of vertebra from near distal end of arm, more fenestrated than proximal vertebrae.