Abstract.  A row of oval unpaired, ventral body attachment scars, accompanied by pseudosutures and
 drag bands, is preserved on surfaces of steinkerns of a lower Chesterian (Mississippian) goniatitid
 ammonoli, Goniatites multiliratus, from Oklahoma.  Many smaller oval and crescentic attachment scars
 are present in the interspaces between these ventral attachment scars and between pseudosutures.
 Cornparison with the muscle scars of other extant and fossil shelled cephalopods suggests that the
 unpaired ventral scars of this species represent the attachment sites of the muscle or ligament at the
 posterior end of the body.  The smaller oval and crescentic scars on the ventral and lateral sides of each
 chamber appear to indicate weaker and less permanent attachments of muscular tissue to the shell wall.
 These are presumed to have been formed during gradual forward movement of the body.