XLI.—The Skeleton of a Sowerby's Whale (Mesoplodon bidens) stranded at St Andrews, and the Morphology of the Manus in Mesoplodon, Hyperoodon and the Delphinidæ

Turner, Wm.

doi:10.1017/s0370164600009184

Cited by 5 publications

(6 citation statements)

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“…densirostris is distinct and large. Small ossa centralia are infrequently observed amongst the other carpal bones in some ziphiid carpi (Turner 1909), but these elements were not seen in the two tropical bottlenose whales studied here. Observations of the manus of Tasmacetus shepherdi , Tasman beaked whale, have been insufficiently reported to make a comparative assessment with Indopacetus other than to note the former species has the six usual carpal bones in two rows (USNM 484878: radiographic image of one flipper examined by AW) and a comparatively low phalangeal count in the holotype specimen (Table 2; Oliver 1937).…”

Section: Flipper Measurements (Cm) Of Adult Female and Juvenile Male mentioning

confidence: 54%

“…Within the beaked whales of the genus Mesoplodon , the carpal bones are usually six in number in two distinct rows, sometimes with the accessory bone proximocaudally (Turner 1885, 1909; Raven 1937, 1942; Mead 1989; dissection and radiographic examination of flippers by AW), and in a few species the ulnare may fuse with carpal 4 + 5 (Reyes et al . 1991).…”

Section: Flipper Measurements (Cm) Of Adult Female and Juvenile Male mentioning

confidence: 99%

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Distinctive osteology of distal flipper bones of tropical bottlenose whales, Indopacetus pacificus, from Taiwan: Mother and calf, calf with polydactyly

Watson

Kuo

Yang

et al. 2007

Marine Mammal Science

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Beaked whales (family Ziphiidae) are relatively large marine mammals, although they are among the least known cetaceans. The 21 described species in six genera ) are broadly distributed around the world, but live almost exclusively in far offshore deep waters where they spend relatively little time at the surface. Observational data are further hindered by their typically undemonstrative and shy surface behavior: their blow is poorly visible, they present a low surface profile, and they spend the majority of their time deep diving, and in general, vocalizing only when deeper than 200 m (reviewed in Cox et al. 2006).

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Section: Flipper Measurements (Cm) Of Adult Female and Juvenile Male mentioning

confidence: 54%

Section: Flipper Measurements (Cm) Of Adult Female and Juvenile Male mentioning

confidence: 99%

Distinctive osteology of distal flipper bones of tropical bottlenose whales, Indopacetus pacificus, from Taiwan: Mother and calf, calf with polydactyly

Watson

Kuo

Yang

et al. 2007

Marine Mammal Science

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“…1994). The accessorium has been recognized in several cetaceans: sperm whale (Physeter macrocephulus) (Flower 1868a), Amazon River dolphin (Zntu geoffrensis) (Flower 18686), pygmy sperm whale (Kogia breuiceps) (Benham 1902), Sowerby's beaked whale (Mesoplodon bidens) (Turner 1909), northern bottlenose whale (Hyperoodon ampallatas) (Turner 1909), and beluga (Delphinapteras Zezlcas) (Yablokov 1974).…”

Section: Discussionmentioning

confidence: 99%

POLYDACTYLY AND OTHER FEATURES OF THE MANUS OF THE VAQUITA, PHOCOENA SINUS

Ortega‐Ortiz¹,

Villa‐Ramírez²,

Gersenowies³

2000

Marine Mammal Science

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The vaquita (Phocoena sinus) manus was examined in 16 individuals. The carpus has a proximal row of three bones and a cartilaginous accessory carpal element distocaudal to the ulna. Five metacarpal bones are present. A process in distocaudal aspect of Metacarpal III and an additional digital ray were present in all individuals examined. The number of phalanges in the additional digital ray varied among individuals and, sometimes, between the left and the right flipper of the same individual. The suggested phalangeal formula is I‐1, II‐7‐8, III‐6‐7, IV‐0‐3, V‐3‐4, VI‐1. The presence of this particular form of polydactyly may be the result of genetic drift in the small vaquita population.

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“…Benham (1902) interpreted a cartilage in a similar position as representing a cartilaginous accessory carpal element in the pygmy sperm whale (Kogia breviceps). Yablokov (1974) identified this element in the beluga, and the accessory carpal bone is described in two beaked whales: Sowerby's beaked whale Mesoplodon bidens, and the northern bottlenose whale Hyperoodon ampullatus (Turner 1909).…”

Section: CMmentioning

confidence: 99%