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22 results for “Phocoenidae”
FIGURE 5. The skull, NFL 2074 in A new skull of the fossil porpoise Numataphocoena yamashitai (Cetacea: Phocoenidae) from the upper part of the Horokaoshirarika Formation (lower Pliocene), Numata Town, Hokkaido, Japan, and its phylogenetic position
FIGURE 5. The skull, NFL 2074, referred specimen of Numataphocoena yamashitai in anterior view. 1, photo, 2, line art.
FIGURE 4. The skull, NFL 2074 in A new skull of the fossil porpoise Numataphocoena yamashitai (Cetacea: Phocoenidae) from the upper part of the Horokaoshirarika Formation (lower Pliocene), Numata Town, Hokkaido, Japan, and its phylogenetic position
FIGURE 4. The skull, NFL 2074, referred specimen of Numataphocoena yamashitai in lateral view. 1, photo, 2, line art.
FIGURE 6 in A new skull of the fossil porpoise Numataphocoena yamashitai (Cetacea: Phocoenidae) from the upper part of the Horokaoshirarika Formation (lower Pliocene), Numata Town, Hokkaido, Japan, and its phylogenetic position
FIGURE 6. Life restoration of Numataphocoena yamashitai. Art work by Tatsuya Shinmura (Ashoro Museum of Paleontology).
FIGURE 8 in A new skull of the fossil porpoise Numataphocoena yamashitai (Cetacea: Phocoenidae) from the upper part of the Horokaoshirarika Formation (lower Pliocene), Numata Town, Hokkaido, Japan, and its phylogenetic position
FIGURE 8. The maxillary terrace from the posterior dorsal infraorbital foramen on the maxilla. 1 and 2, NFL 7, the type of Numataphocoena yamashitai. 3 and 4, NFL 2074, the referred specimen.
FIGURE 3. The skull, NFL 2074 in A new skull of the fossil porpoise Numataphocoena yamashitai (Cetacea: Phocoenidae) from the upper part of the Horokaoshirarika Formation (lower Pliocene), Numata Town, Hokkaido, Japan, and its phylogenetic position
FIGURE 3. The skull, NFL 2074, referred specimen of Numataphocoena yamashitai in ventral view. 1, photo, 2, line art.
FIGURE 2. The skull, NFL 2074 in A new skull of the fossil porpoise Numataphocoena yamashitai (Cetacea: Phocoenidae) from the upper part of the Horokaoshirarika Formation (lower Pliocene), Numata Town, Hokkaido, Japan, and its phylogenetic position
FIGURE 2. The skull, NFL 2074, referred specimen of Numataphocoena yamashitai in dorsal view. 1, photo, 2, line art.
FIGURE 1. 1 in A new skull of the fossil porpoise Numataphocoena yamashitai (Cetacea: Phocoenidae) from the upper part of the Horokaoshirarika Formation (lower Pliocene), Numata Town, Hokkaido, Japan, and its phylogenetic position
FIGURE 1. 1, Locality maps, 2, stratigraphic sections of the locality based on previous studies which are mentioned in the text. This figure is modified from Tanaka (2016).
FIGURE 9 in A new skull of the fossil porpoise Numataphocoena yamashitai (Cetacea: Phocoenidae) from the upper part of the Horokaoshirarika Formation (lower Pliocene), Numata Town, Hokkaido, Japan, and its phylogenetic position
FIGURE 9. Geochronological distributions and postulated phylogeny of the Phocoenidae.
FIGURE 7. A in A new skull of the fossil porpoise Numataphocoena yamashitai (Cetacea: Phocoenidae) from the upper part of the Horokaoshirarika Formation (lower Pliocene), Numata Town, Hokkaido, Japan, and its phylogenetic position
FIGURE 7. A cladogram showing relationships of the Phocoenidae. Numbers represent branch lengths.
Data from: Endocranial anatomy of a new fossil porpoise (Odontoceti: Phocoenidae) from the Pliocene San Diego Formation of California
The Pliocene fossil porpoise SDSNH 65276 has extremely elongate mandibular morphology, unlike that of any marine amniote, and is superficially most similar to the living bird species known as skimmers (Rynchops sp.). Endocasts of the pterygoid sinuses and endocranial cavity were digitally segmented from high-resolution X-ray CT scans of the specimen to explore internal anatomy of functionally and phylogenetically important anatomical features of this specimen and odontocetes in general. The sinuses are similar in volume and shape to extant porpoise species, but the dorsal extension of the preorbital lobes are particularly elongate as in the harbor porpoise (Phocoena phocoena). The cranial endocast also shows similarities with extant porpoises, but has much deeper interhemispheric fissures, which are filled by ossified meninges, particularly a deep falx cerebri and shallower tentorium cerebelli. Ossifications of these parts of the meninges may reflect faster angular accelerations of the head, deeper diving ability, or both. Penetrations of the endocranial cavity for cranial nerves and blood vessels are like those of extant porpoises. The internal skull morphology of this unique delphinoid sheds additional light both on its phylogenetic affinities and novel odontocete adaptations.
Subspecies and Distribution. P.p.phocoenaLinnaeus,1758—coastalwatersoftheNAtlanticOcean. P.p.relictaAbel,1905—coastalwatersof theBlackSea,theAzovandMarmaraseas(isolatedpopulation).AfewstragglersfromthispopulationshowupperiodicallyintheAegeanSea,buttheydonotoccurthroughoutmostoftheMediterraneanSea. P.p. vomerina Gill, 1865 — coastal waters of the NE Pacific Ocean. A still unnamed form is present in the coastal waters of the NW Pacific Ocean. in Phocoenidae
Subspecies and Distribution. P.p.phocoenaLinnaeus,1758—coastalwatersoftheNAtlanticOcean. P.p.relictaAbel,1905—coastalwatersof theBlackSea,theAzovandMarmaraseas(isolatedpopulation).AfewstragglersfromthispopulationshowupperiodicallyintheAegeanSea,buttheydonotoccurthroughoutmostoftheMediterraneanSea. P.p. vomerina Gill, 1865 — coastal waters of the NE Pacific Ocean. A still unnamed form is present in the coastal waters of the NW Pacific Ocean.
Distribution. Shallow, coastal waters of tropical and subtropical S & E Asia, from the Persian Gulf E to the S East China Sea and S to the Sunda Is. There are no records from Oman and the Philippines, although the species is expected eventually to be found in both locations. in Phocoenidae
Distribution. Shallow, coastal waters of tropical and subtropical S & E Asia, from the Persian Gulf E to the S East China Sea and S to the Sunda Is. There are no records from Oman and the Philippines, although the species is expected eventually to be found in both locations.
On following pages: 3. Spectacled Porpoise (Phocoena dioptrica); 4. Burmeister's Porpoise (Phocoena spinipinnis); 5. Vaquita (Phocoena sinus); 6. Harbor Porpoise (Phocoena phocoena); 7. Dall's Porpoise (Phocoenoides dall). in Phocoenidae
On following pages: 3. Spectacled Porpoise (Phocoena dioptrica); 4. Burmeister's Porpoise (Phocoena spinipinnis); 5. Vaquita (Phocoena sinus); 6. Harbor Porpoise (Phocoena phocoena); 7. Dall's Porpoise (Phocoenoides dall).
Subspecies and Distribution. P. d. dalli True, 1885 — cool temperate regions of the N Pacific Ocean from Japan to Alaska and S to N Baja California, Mexico. P d. truee Andrews, 1911 — NW Pacific ÚCCZUI waters ¢.35-534° N, including the Okhotsk Sea. in Phocoenidae
Subspecies and Distribution. P. d. dalli True, 1885 — cool temperate regions of the N Pacific Ocean from Japan to Alaska and S to N Baja California, Mexico. P d. truee Andrews, 1911 — NW Pacific ÚCCZUI waters ¢.35-534° N, including the Okhotsk Sea.
Distribution. Near-shore waters of South America, from N Peru (5° S) S to Cape Horn and up the Atlantic coast to S Brazil (28° 50" S). Records from Uruguay and Brazil may be associated with N extrusions ofcold water. in Phocoenidae
Distribution. Near-shore waters of South America, from N Peru (5° S) S to Cape Horn and up the Atlantic coast to S Brazil (28° 50" S). Records from Uruguay and Brazil may be associated with N extrusions ofcold water.
Distribution. N in Phocoenidae
Distribution. N Gulf of California (also called the Sea of Cortez) in N Mexico, the smallest known distribution of any marine cetacean.
Distribution. Southern Hemisphere (E South America from S Brazil to Tierra del Fuego, Falkland Is (= Malvinas), South Georgia Is, Kerguelen Is, Heard I, Macquarie I, Auckland Is, and Tasmania). Although previously thought to be exclusively coastal, like other members of the genus, recent sightings in oceanic waters of the Antarctic and subantarctic zones suggest that the species actually has a circumpolar distribution and may be largely oceanic. in Phocoenidae
Distribution. Southern Hemisphere (E South America from S Brazil to Tierra del Fuego, Falkland Is (= Malvinas), South Georgia Is, Kerguelen Is, Heard I, Macquarie I, Auckland Is, and Tasmania). Although previously thought to be exclusively coastal, like other members of the genus, recent sightings in oceanic waters of the Antarctic and subantarctic zones suggest that the species actually has a circumpolar distribution and may be largely oceanic.
Data from: Endocranial anatomy of a new fossil porpoise (Odontoceti: Phocoenidae) from the Pliocene San Diego Formation of California
Open the record for dataset details and reuse information.
• 120-240 cm. in Phocoenidae
• 120-240 cm.
Neophocaena asiaeorientalis Shimonoseki Marine Science Museum, Yamaguchi, Japan. Photo: Grant Abel in Phocoenidae
Neophocaena asiaeorientalis Shimonoseki Marine Science Museum, Yamaguchi, Japan. Photo: Grant Abel
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