Mesoplodon tumidirostris Miyazaki and Hasegawa 1992 (beaked whale)

Mammalia - Odontoceti - Ziphiidae

Full reference: N. Miyazaki and Y. Hasegawa. 1992. A new species of fossil beaked whale, Mesoplodon tumidirostris sp. nov. (Cetacea, Ziphiidae) from the central North Pacific. Bulletin of the National Science Museum, Tokyo, Series A 18(4):167-174

Belongs to Mesoplodon according to N. Miyazaki and Y. Hasegawa 1992

Sister taxa: Mesoplodon bidens, Mesoplodon bononiensis, Mesoplodon bowdoini, Mesoplodon carlhubbsi, Mesoplodon danconae, Mesoplodon densirostris, Mesoplodon europaeus, Mesoplodon ginkgodens, Mesoplodon grayi, Mesoplodon hectori, Mesoplodon hotaula, Mesoplodon lawleyi, Mesoplodon layardii, Mesoplodon longirostris, Mesoplodon medilineatus, Mesoplodon meneghinii, Mesoplodon mirus, Mesoplodon perrini, Mesoplodon peruvianus, Mesoplodon posti, Mesoplodon slangkopi, Mesoplodon stejnegeri, Mesoplodon traversii, Ziphius gibbus, Ziphius tenuirostris, Ziphius (Dolichodon) geelongensis

Type specimen: NSM-PV 19732, a partial skull (rostral fragment). Its type locality is Emperor Seamounts/Midway Island trawl 1, which is in a Neogene marine horizon in Japan.

Ecology: aquatic piscivore-carnivore


• Pliocene of Japan (1 collection)

• Neogene of Japan (1)

Total: 2 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.

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