Extended Data Fig. 7 in A heavyweight early whale pushes the boundaries of vertebrate morphology

Extended Data Fig. 7 | Vertebral microanatomy illustrated with binarized sections (black = bone) obtained with physical core drills (a) or µCT data(b–f). a, Perucetus colossus (MUSM 3248, holotype, vertebra L-e for the centrum and transverse process and L-c for the neural spine).The global compactness (Cg) was measured in ten areas (orange outlines) to assess overall centrum compactness (see Supplementary Methods).b, common minke whale (Balaenoptera acutorostrata, LR M 523). c, Amazon river dolphin (Inia geoffrensis, ZMB_ Mam_41500).d, common dolphin (Delphinus sp. ZMB_Mam_697.59).e, dugong (Dugong dugon, ZMB_Mam_69340).f, manatee (Trichechus manatus, ZMB_ Mam_17377).(1) Centrum (anteroposterior mid-length, from its dorsal edge to its centre), external towards top; (2) Neural spine (dorsoventral mid-height), external towards right); (3) Transverse process (mediolateral mid-width), external towards top. Width of the virtual cross-sections were defined as representing 7.2% of the centrum dorsoventral height; this is the mean ratio between the centrum height of P.colossus and the width of the physical core drills.The core drills of the neural spine and transverse process do not reach the middle of the corresponding vertebral parts (but break surfaces indicate uniform structure throughout).See core drills' location in Supplementary Fig.S6c,d.Scalebars:a = 13.9 mm, b = 23.6 mm,c = 2.2 mm,d = 2.7 mm, e = 3.2 mm, f = 3.0 mm.