I'm conducting a geometric morphometric study of a sample of distal humeri from many primate species (fossil and extant) with a view to exploring and describing patterns of variation within species. I've been exploring my landmark data with the package geomorph in R. I'm fairly new to R, but one of the things that is clear to me is that gpagen only performs a partial Procrustes fit of the landmark data. Reflection is an important step for my dataset because I have both left and right humeri in my sample (don't get much of a choice of side with fossils).

Short of coding a wrapper myself, is there any way to perform a full Procrustes fit (with reflection!) using the gpagen function from geomorph? I know this functionality is available in other packages (e.g. shapes), but I prefer the analytical functions of geomorph.