Generally considered diagnostic of Late Prehistoric Toyah assemblages, Perdiz arrow points are characteristic of the transition from the Late Prehistoric to the Protohistoric. If larger Perdiz arrow points from Caddo burials are conceived of as products of trade and/or exchange with Toyah groups, then those with longer blade lengths provide inference to shifts in Caddo selective preference, while those with shorter blade lengths evince local approaches to resharpening and/or retouch that were uniquely Caddo. This study asks whether linear shape variables convey discrete regional resharpening strategies, whether morphological trajectories differ between the northern and southern behavioural regions, and whether morphological disparity differs between larger and smaller size classes, as defined by differences in blade length. Results demonstrate distinct regional resharpening strategies and divergent morphological trajectories for Perdiz arrow points included as Caddo mortuary offerings in the northern and southern behavioural regions. Perdiz arrow point shapes were not found to differ in the large size class between the northern and southern behavioural regions, demonstrating consistency in Caddo preference, or—alternatively—Toyah manufacture. However, differences in the small size class suggest discrete local approaches to resharpening and/or retouch by Caddo knappers. Caddo groups that occupied the southern behavioural region may have also been less selective, preferring Perdiz arrow points with a greater range of diversity in shape and size, while their counterparts to the north preferred a more standardized product.