The bulk update request #11130 is pending approval.
create implication head_spines (428) -> spines (8519)
create implication back_spines (1208) -> spines (8519)
create implication tail_spines (951) -> spines (8519)
Reason: The implications seem self evident.
The whole spines tag is applied pretty incosistently in general, though. Maybe "needles_(anatomy)" would better distinguish it even if it's a little weird
Updated