Historical clue formulations

• Shoulder muscle — 2017-03-26
• Trapezius neighbor — 2014-08-30
• Arm raiser — 2012-08-30
• Shoulder muscle — 2009-06-28
• Muscle named for its shape — 2007-12-15
• Shoulder muscle — 2001-02-19
• Bodybuilder's pride — 1995-10-05