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・ Oryahovo, Haskovo Province
・ Oryakhel
・ Oryan
・ Oryan Tappeh
・ Oryan, Torbat-e Heydarieh
・ Oryavchyk
・ Orya–Tor languages
・ Oryba
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Orycterocetus
・ Orycteropodidae
・ Orycteropus
・ Orycteropus abundulafus
・ Oryctes
・ Oryctes (disambiguation)
・ Oryctes nevadensis
・ Oryctocephalus
・ Oryctocephalus indicus
・ Oryctodiplax
・ Oryctodromeus
・ Oryctographia Carniolica
・ Oryctolaelaps
・ Oryctometopia
・ Oryctometopia fossulatella


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Orycterocetus : ウィキペディア英語版
Orycterocetus

''Orycterocetus'' is an extinct genus of sperm whale from the Miocene of the northern Atlantic Ocean.
==Classification==
''Orycterocetus'' is a member of Physeteroidea closely related to crown-group sperm whales. The type species, ''O. quadratidens'', was first named by Joseph Leidy on the basis of two teeth, two partial mandibular rami, and a rib from Neogene deposits of Virginia.〔J. Leidy. 1853. (on extinct Cetacea ). Proceedings of the Academy of Natural Sciences 6:377-378〕 Two more species were subsequently described, ''O. cornutidens'' Leidy 1856〔J. Leidy. 1856. Notice of remains of extinct vertebrated animals discovered by Professor E. Emmons. Proceedings of the Academy of Natural Sciences of Philadelphia 8:255-257〕 and ''O. crocodilinus'' Cope, 1868,〔E. D. Cope. 1867. An addition to the vertebrate fauna of the Miocene period, with a synopsis of the extinct Cetacea of the United States. Proceedings of the Academy of Natural Sciences of Philadelphia 19(4):138-157〕 the latter from the middle Miocene Calvert Formation.

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