Fossil platanistoid dolphin: Tables

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TABLE 1. Measurements in mm of holotype, OU 22306, Otekaikea huata : skull and mandibles. Dimensions follow Fordyce et al. (2002) and Perrin (1975). Measurements are rounded to the nearest 0.5 mm. For skull and mandible, distances are either horizontal or vertical, unless identified as point to point. + means measurements of preserved distances of broken part.

Skull
total length, from the most anterior point to posterior of occipital condyles	790.0+
cranial length	222.0+
width of premaxillae at a line across posterior limits of antorbital notches	39.0+
maximum width of premaxillae about the level with mid-orbit	127.5
preorbital width, at level of frontal-lacrimal suture	209.0+
postorbital width, across apices of postorbital processes	252.0+
maximum width across narial aperture	68.5
median length of nasals on vertex, point to point	7.5
maximum length of right nasal on vertex	31.5
median length of frontals on vertex	35.0
greatest width of right temporal fossa, measured to external margin of rised suture	60.5
greatest width of right temporal fossa at right ange to greatest length	114.0
mediolateral diameter of right temporal fossa proper	82.0
anteroposterior diameter of right temporal fossa proper	64.5
distance from posterior of occipital condyle to anterior apex of supraoccipital	38.5
vertical external height of skull, from most ventral part of braincase on basioccipital crest, to dorsal extremity of frontal at vertex	160.0
bizygomatic width	265.0
bicondylar width	85.5
Mandibles
maximum preserved length of left mandible	533.0+
maximum preserved height of left mandible	116.0+
height of condyloid process	-
width of condyloid process	-

TABLE 2. Measurements in mm of holotype, OU 22306, Otekaikea huata : periotic and tympanic bulla. Dimensions follow Fordyce et al. (2002), Perrin (1975), and Kasuya (1973). Measurements are rounded to the nearest 0.5 mm. For skull and mandible, distances are either horizontal or vertical, unless identified as point to point.

Periotic
maximum anteroposterior length, from anterior apex of anterior process to apex of posterior process	44.0
maximum anteroposterior length parallel to dorsal margin	43.0
maximum dorsoventral depth anterior process, perpendicular to axis of periotic	15.0
length of anterior process, from anterior apex to level of posterior of mallear fossa	22.5
length of anterior process, from anterior apex of anterior process to level of anterior of pars cochlearis in notch immediately lateral to fine ridge	14.5
dorsoventral depth at fovea epitubaria	1.5
length facet on posterior process point to point	17.5
facial canal anteroposterior diameter	2.0
maximum width of anterior process at base	11.5
approximate anteroposterior length of pars cochlearis	18.0
approximate transverse width of pars cochlearis, from internal edge to fenestra ovalis	10.5
transverse width of periotic, internal face of pars cochlearis to apex of lateral tuberosity	22.0
length of posterior process of periotic	18.5
length of posterior process parallel to posterior profile/ steeply acute to long axis of body	18.0
Tympanic bulla
width of sigmoidal process	14.0
height of sigmoidal process	8.5

TABLE 3. Measurements in mm of holotype, OU 22306, Otekaikea huata : postcranial elements. Dimensions follow Fordyce et al. (2002) and Perrin (1975). Measurements are rounded to the nearest 0.5 mm. For skull and mandible, distances are either horizontal or vertical, unless identified as point to point. + means measurements of preserved distances of broken part.

Atlas
maximum preserved length	63.0
maximum preserved height	70.5+
maximum preserved width	101.0+
length of body	60.0
height of anterior articular surface	48.5
width of anterior articular surface	90.0
height of posterior articular surface	47.5
width of posterior articular surface	87.5
Axis
maximum preserved height	76.0
maximum preserved width	129.0
length of body	55.5
length of dens	23.0
height of anterior articular surface	36.0
width of anterior articular surface	88.5
height of posterior articular surface	49.0
width of posterior articular surface	54.5
4th cervical vertebra
maximum preserved length	39.5
maximum preserved height	88.0+
maximum preserved width	80.5+
length of neural spine	79.0+
height of neural spine	11.0+
length of body	28.0
height of anterior articular surface	47.0
width of anterior articular surface	45.5
height of posterior articular surface	40.5
width of posterior articular surface	46.5
5th cervical vertebra
maximum preserved length	28.5+
maximum preserved height	71.5+
maximum preserved width	98.0+
length of body	27.0
height of anterior articular surface	51.5
width of anterior articular surface	51.5
height of posterior articular surface	49.0
width of posterior articular surface	51.0
6th cervical vertebra
maximum preserved height	74.0+
maximum preserved width	85.5+
length of body	26.5
height of anterior articular surface	44.0+
width of anterior articular surface	47.0
height of posterior articular surface	47.0+
width of posterior articular surface	46.5+
Thoracic vertebra 1 in Fig. 14
maximum preserved height	66.0+
maximum preserved width	107.0+
length of body	32.0
Thoracic vertebra 2 in Fig. 14
maximum preserved length	49.0+
maximum preserved height	120.0+
maximum preserved width	89.0+
length of neural spine	23.0+
height of neural spine	49.5+
length of body	44.0
Thoracic vertebra 3 in Fig. 14
maximum preserved length	83.5+
maximum preserved height	128.0+
maximum preserved width	83.5+
length of neural spine	56.5+
height of neural spine	49.0+
length of body	58.0
Thoracic vertebra 4 and 5 in Figure 14
maximum preserved length	73.5+
maximum preserved height	95.5+
maximum preserved width	81.5+
length of neural spine	52.0+
height of neural spine	16.0+
length of body	63.0
Thoracic vertebra 6 in Figure 14
maximum preserved height	60.5+
maximum preserved width	244.0+
length of body	74.5
Scapula	left	right
maximum preserved length of the left	284.0+	328.0
maximum preserved height of the left	118.0+	224.0
length of acromion process	79.0+	95.5+
length of glenoid fossa	52.5	50.5
width of glenoid fossa	47.5	48.5
depth of glenoid fossa	10.0	9.0
Humerus	left	right
Length	153.0	151.0
narrowest length of shaft	55.0	56.0
width of shaft at the narrowest point	39.5	41.5
Ulna	left	right
Length	-	146.0
length without olecranon process	-	103.0
narrowest length of shaft	-	40.0
width of shaft at the narrowest point	-	21.0
Radius	left	right
Length	115.0	120.0
narrowest length of shaft	34.0	37.0
width of shaft at the narrowest point	26.5	27.5
Sternum
preserved length	97.0+
preserved widest width	86.5+
preserved narrowest width	58.0+