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Copepteryx
''Copepteryx'' is an extinct genus of flightless bird, flightless bird of the family Plotopteridae, endemic to Japan during the Oligocene living from 28.4 to 23 Annum, mya, meaning it existed for approximately . History and Etymology Remains of large, flightless suliformes in Japan are known since the 1970s. In 1979, Storrs L. Olson and Hasegawa Yoshikazu identified them as those of plotopterids, but their abundance and diversity complicated their identification as distinct species. In 1996, the two first species endemic from Japan were described by Olson and Hasegawa. Both species were identified as belonging to the same genus, ''Copepterix''. The type species, ''C. hexeris'', was described after a partially articulated skeleton, KMNH VP 200,006, collected in 1977 by Hasegawa himself on Ainoshima (Kitakyushu), Ainoshima, in rocks dated from the Late Oligocene of the Ainoshima Formation. As paratypes were considered another associated skeleton from the Yamaga Formation, a fragmen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hokkaidornis
''Hokkaidornis'' is an extinct genus of Sphenisciformes, penguin-like plotopterid from the Late Oligocene of Hokkaido, Japan. History and etymology The first ''Hokkaidornis'' remains were discovered in sediments dated from the Late Oligocene of the Tokoro Formation, near the city of Abashiri, in the Japanese island of Hokkaido, and had been identified as the remains of a yet-unidentified genus and species of plotopterid in 1998. In 2008, Kazuhiko Sakurai, Masaichi Kimura and Takayuki Katoh (palaeontologist), Takayuki Katoh described the new genus and species ''Hokkaidornis abashiriensis'', using as holotype the specimen AMP 44, a semi-complete skeleton lacking the skull. Etymology The genus name, ''Hokkaidornis'', is constructed from Hokkaido, the island in which the holotype was discovered, and the ancient Greek suffix ''-ornis'', meaning "bird". The species name, ''abashiriensis'', refers to the town of Abashiri, near which it was found; the city name itself meaning "to be dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
