The Fraser’s dolphin,
This species has a pantropical distribution, largely between 30°N and 30°S (Jefferson et al., 1993). Several stranding records were reported in temperate areas such as France and United Kingdom (Duguy, 1984; Bones et al., 1998). However, these were considered unusual and were probably influenced by temporary oceanographic events (Louella and Dolar, 2009).
In the north-west Pacific region, there are only 4 documented stranding or catch records of the species in Japan (Amano, 2009). Some were sighted and taken in fisheries in Taiwan (Kaiya et al., 1995). However, the species was not recognized from Korea.
An adult female
Infraorder Cetacea Brisson, 1762
Superfamily Odontoceti Flower, 1867
Family Delphinidae Gray, 1821
1*Genus Lagenodelphis Fraser, 1957
Skull measurements of CRI 00009 specimen compared with holotype
345; Tobayama et al., 1973: 251; Bones et al., 1998: 460; Mignucci-Giannoni et al., 1999: 15.
Description. External morphology: Body streamlined and robust. Gently rounded head. Distinct short beak. Number of teeth 40 in each upper row, 44 in left under row and 41 in right under row. Relatively short appendages. Triangular but slightly falcate dorsal fin located mid-back. Small flippers with pointed tips. Flukes concave edges and distinct notch in the middle. Body color is dark gray on the back yellowish and white on the belly.
External measurements (cm): Total body length 221.0,
snout to gape 26.7, snout to blowhole 32.5, snout to eye 32.5, snout to external auditory meatus 38.0, snout to anterior insertion of flipper 40.5, snout to posterior dorsal fin 93.2, snout to umbilicus 101.3, snout to genital aperture 143.1, snout to anus 156.4, maximum width of dorsal fin 29.3, height of dorsal fin 14.5, anterior length of flipper 24.5, posterior length of flipper 17.0, maximum width of flipper 7.5, width of flukes 47.5, nearest point on anterior border of flukes to notch 13.5, girth on anus 63.0, girth on umbilicus 97.0.
Osteological characters: Cranial characters of CRI 00009 are shown in Table 1. Dorsal view of the skull is slightly asymmetry especially around external nares part (Fig. 2). The vertebral formula was cervical 7, thoracic 15, lumber 21 and caudal 29. Some caudal vertebrae which were missed during preparation were not included. The first two cervical vertebrae were fused. The junction of spinous process between fifth and sixth cervical vertebrae was also observed.
Cranial measurements of the present specimen also well corresponded to condylobasal length proportions given in the previous descriptions of the holotype provided by Fraser (1956) (Table 1).
Korean name: 1*？？？？？？？？？ (？？？), 2*？？？？？？？ (？？？)