Figure 2. Lateral view of the hindlimb and pelvic girdle of palaeognath embryos. A–C, Dromaius novaehollandiae: A, stage 32 (RM 8052); B, stage 36 (day 25 of incubation, RM 8023); C, stage 40+ (day 36 of incubation, RM 8034). E–G, Struthio camelus: E, day 15 of incubation (YPM 112437); F, day 21 of incubation (YPM 112444); G, day 34 of incubation (YPM 112459). I, J, Eudromia elegans: I, day 10 of incubation (YPM 112520); J, day 15 of incubation (YPM 112525). D, H, Rhea americana: D, stage 34 (day 14 of incubation, RM 7217); H, stage 40+ (day 26 of incubation, RM 7223). Grey shaded regions represent cartilage; black regions represent ossified tissue. The density of stippling reflects the relative degree of ossification. Scale bar, 5 mm.

Published as part of Maxwell, Erin E. & Larsson, Hans C. E., 2009, Comparative ossification sequence and skeletal development of the postcranium of palaeognathous birds (Aves: Palaeognathae), pp. 169-196 in Zoological Journal of the Linnean Society 157 (1) on page 180, DOI: 10.1111/j.1096-3642.2009.00533.x, http://zenodo.org/record/5443195