European Research on Cetaceans (1988)
(...) The free-swinging bullae of odontocetes are very massive, their specific weight being twice that of the other skull bones. This feature led Yamada (1953) to his theory that the…
The Dall porpoise, Phocoenoides dalli (True), of the northern Pacific Ocean
McTaggart-Cowan, I.
Journal of Mammalogy (1944)
(...) The Dall porpoise, Phocoenoides dalli (True), occupies a rather restricted range in the northern Pacific. On the American side this extends from the Aleutian Islands to Santa Barbara Channel,…
Spectacled porpoise, Phocoena dioptrica, new to the subantarctic Pacific Ocean
Baker, Alan N.
New Zealand Journal of Marine and Freshwater Research (1977)
A cranium of Phocoena dioptrica Lahille, 1912, collected at Enderby Island, Auckland Islands, represents the first discovery of the species in the Pacific Ocean, the ten previous records being all…
Habitat shapes skull profile of small cetaceans: Evidence from geographical variation in Black Sea harbour porpoises (Phocoena phocoena relicta)
Gol’din, Pavel; Vishnyakova, Karina
Zoomorphology (2016)
Morphological differentiation in skull shape in small toothed whales is sometimes explained as driven by differences in ontogeny or adaptation to a benthic or pelagic habitat. To test these hypotheses,…
Haborophocoena toyoshimai, a new early Pliocene porpoise (Cetacea; Phocoenidae) from Hokkaido, Japan
Ichishima, H.; Kimura, M.
Journal of Vertebrate Paleontology (2005)
Haborophocoena toyoshimai (family Phocoenidae), from the early Pliocene Mochikubetsu Formation in northwestern Hokkaido, Japan, is a new genus and species of porpoise. The holotype is an incomplete skull, tympanoperiotic, mandible,…
New material of Haborophocoena toyoshimai (Odontoceti: Phocoenidae) from the lower Pliocene Embetsu formation of Hokkaido, Japan
Ichishima, Hiroto; Kimura, Masaichi
Paleontological Research (2013)
A new specimen of the Early Pliocene porpoise Haborophocoena toyoshimai, comprising an incomplete cranium, was discovered from the Embetsu Formation near the locality of H. minutus, Haboro Town, Hokkaido, Japan.…
Comparative morphology of porpoise (Cetacea: Phocoenidae) pterygoid sinuses: Phylogenetic and functional implications
Racicot, Rachel A.; Berta, Annalisa
Journal of Morphology (2012)
High-resolution X-ray computed tomographic scans were used to examine pterygoid sinus morphology within extant porpoise species and one delphinid (Tursiops truncatus), in order to consider: 1) intraspecific and interspecific variation…
Ultrastructure of enamel and dentine in extant dolphins (Cetacea: Delphinoidea and Inioidea)
Loch, Carolina; Duncan, Warwick; Simões-Lopes, Paulo C.; Kieser, Jules A.; Fordyce, R. Ewan
Zoomorphology (2012)
Longitudinal and cross sections of teeth from 17 species of the Recent dolphins (Delphinoidea and Inioidea) were examined under scanning electron microscope to study the arrangement and ultrastructure of dental…
Preliminary analysis of geographic variation in cranial morphometrics of the finless porpoise (Neophocaena phocaenoides)
Jefferson, T. A.
The Raffles Bulletin of Zoology (2002)
The taxonomy of the finless porpoise (Neophocaena phocaenoides), while better-studied than that of many species of small cetaceans, still suffers from some uncertainties and a general lack of data from…
Population structure of finless porpoises (Neophocaena phocaenoides) in coastal waters of Japan
Yoshida, H.
The Raffles Bulletin of Zoology (2002)
To clarify population structure of finless porpoises (Neophocaena phocaenoides) in Japan, a sequence of studies have been conducted: a questionnaire survey and aerial sighting surveys to obtain information on porpoise…