Fig. 2
Neonatal RMR inferences using PEM and the neonatal RPOA value as co-predictor. (a) Results of the PEM analysis using RPAO as a predictor variable for RMR inferences in mL(O2) h−1 g−0.67. Fitted values are available in the supplementary material 8. B. The black dots are the osteocytes lacunae. The RPOA value of 0.74 equals the area delimited by the green outlines divided by the total area delimited with the black rectangle. (b) Femoral thin section under natural light of the hatchling MOR 758 16-16-15-99 (right) that has been slightly crushed anteroposteriorly during diagenesis. The area delimited in blue corresponds to the embryonic area. A and P the anterior and posterior parts. The blue dashed lines indicate the neonatal line. The black dots are the osteocytes lacunae. The RPOA value of 0.74 equal the area in green divided by the total area delimited with the black rectangle. (c) Zoom under natural light in the black rectangle in b to show the neonatal line (blue arrow) delimited by drastic change of vascularization. Embryonic bone to the Left, cortex to the right. (d) RPOA measurement on the cortex area with lambda wave plate. The calcite in white fills the primary osteon delimited in green46. The black dots are the osteocytes lacunae. The RPOA value of 0.74 equal the area in green divided by the total area delimited with the black rectangle.
