Doing a little diagnostic work to better determine this phacopid species. In recent trips to one of my collecting sites, which typically is composed of imported Bois Blanc Fm fill (and just recently evidence of some Amherstberg Fm mixed in), I have had to reassess some of the specimens I've been pulling from there - and that includes several examples of what I wrote off as simply Eldredgeops rana. Consulting both Stumm (1954) and Ludvigsen (1979), E. rana is not reported in either of those formations. I've also paid particular attention to the comparative table in Whitely, Kloc and Brett's Tri