Table 1 Measurements (in mm) of the referred skull of the Caujarao delphinidan MTT-V-558

Condylobasal length

530+

Length of the rostrum

275+

Width of rostrum at base

160

Width of the rostrum at 60 mm anterior to the line across hindmost limits of antorbital notches

112

Width of rostrum at midlength

95

Width of premaxillae at midlength of the rostrum

70

Width of rostrum at 3⁄4 length, measured from posterior end

81

Height of rostrum at base

82

Height of rostrum at midlength

49

Height of rostrum at end

46

Distance from tip of rostrum to external nares

347+

Maximum width of the external right bony nare

27

Maximum width of the external left bony nare

31

Greatest preorbital width (width across preorbital processes)

240e

Greatest postorbital width (width across postorbital processes)

290e

Least supraorbital width

270e

Maximum width of external nares

71

Greatest width across zygomatic processes of squamosal

270e

Greatest width of premaxillae

127