Fig. 7: Femoral foramina and estimates of relative femoral blood flow for Morganucodon.
From: Reptile-like physiology in Early Jurassic stem-mammals
a 3D reconstruction of Morganucodon femur using µCT (specimen UMZC EoPC 19_6, voxel size of 4 μm), with all identifiable foramina segmented and highlighted (red, green, gold and blue). b Log10 biplot of mean body mass (g) against estimated blood flow index (Qi; mm3) for extant non-avian reptiles (n = 22), extant varanid reptiles (n = 8), extant mammals (n = 69) and Morganucodon. GLS regression lines in b are shown for extant mammals (black), extant non-varanid reptiles (blue) and extant varanids (purple), with 95% confidence intervals represented by dashed lines. Scale bars in a represent 1 mm. Source data are provided as a Source data file.
