FIG. 11 in Reassessment Of A Historical Collection Of Sauropod Dinosaurs From The Northern Morrison Formation Of Wyoming, With Implications For Sauropod Biogeography

FIG. 11. Range of humeral robusticity indices (RI) in Morrison Formation sauropods. Ratio represents the mean of proximal, distal, and minimum shaft mediolateral widths (prW, diW, minW, respectively), divided by proximodistal length (pdL). Dots are ratios of single humeri and stars are the mean across the entire taxon. The open rectangles represent ratios in specimens from RFPR. Note that Galeamopus humeri have a more similar RI to apatosaurines (Apatosaurus, Brontosaurus, and indeterminate specimens) than to the other diplodocines Diplodocus and Barosaurus. The RFPR specimens CM 28849 and CM 36026 are referred to Diplodocidae indet., and CM 21775 and CM 36019 to Camarasauridae indet.