has muscle origin has muscle origin has muscle insertion has muscle insertion Felidae clavicle bone trapezius muscle clavotrapezius muscle The most anterior of the trapezius muscles, found in felids, it is also the largest. Its fibers run obliquely to the ventral surface. Its origin is the superior nuchal line and median dorsal line and its insertion is the clavicle. Its action is to draw the clavicle dorsally and towards the head. UBERON:0014798 clavotrapezius superior nuchal line attachment site