Bibliography Record
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Chiba, Kentaro; Fiorillo, Anthony R.; Jacobs, Louis L.; Kimura, Yuri; Kobayashi, Yoshitsugu; Kohno, Naoki; Nishida, Yosuke; Polcyn, Michael J.; Tanaka, Kohei
(detail)
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2015 |
A new desmostylian mammal from Unalaska (USA) and the robust Sanjussen jaw from Hokkaido (Japan), with comments on feeding in derived desmostylids.
Historical Biology 28(1-2): 289-303. 1 tab. 9 figs. http://dx.doi.org/10.1080/08912963.2015.1046718 Publ. online Oct. 1, 2015.
–ABSTRACT: Derived members of the enigmatic mammalian order Desmostylia have molars comprising appressed columns whose morphology does not render their function in feeding simple to discern. Here we describe a new genus and species, Ounalashkastylus tomidai, more derived than Cornwallius but less derived than Desmostylus and Vanderhoofius, which develop a hypertrophied medial eminence on the dentary ontogenetically. Tooth morphology, vaulted palate and the medial eminence, which can rise to the level of the occlusal surface of M2, suggest that derived desmostylids clenched their teeth strongly while employing suction during feeding, most likely on marine and coastal plants.
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Related Index Records (10)
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Alaska
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2015 |
Chiba et al. (Ounalashkastylus tomidai, n.gen.n.sp.; Olig.-Mioc., Unalaska) |
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Behavior, Ingestive
(SEE ALSO: Behavior, Epimeletic; Behavior, Et-epimeletic; Food; Mastication; Milk)
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2015 |
Chiba et al. (Ounalashkastylus tomidai, n.gen.n.sp., Olig.-Mioc., Alaska; cf. Vanderhoofius sp., Middle Mioc., Hokkaido; feeding adaptations) |
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Desmostylidae Osborn, 1905
(family)
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2015 |
Chiba et al. (Ounalashkastylus tomidai, n.gen.n.sp., Olig.-Mioc., Alaska; cf. Vanderhoofius sp., Middle Mioc., Hokkaido; phylogeny) |
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Japan
(SEE ALSO: Sakhalin)
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2015 |
Chiba et al. (cf. Vanderhoofius sp., Middle Mioc., Hokkaido) |
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Miocene
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2015 |
Chiba et al. (Ounalashkastylus tomidai, n.gen.n.sp., Olig.-Mioc., Alaska; cf. Vanderhoofius sp., Middle Mioc., Hokkaido) |
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Oligocene
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2015 |
Chiba et al. (Ounalashkastylus tomidai, n.gen.n.sp.; Olig.-Mioc., Alaska) |
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Phylogeny and Affinities of the Sirenia and/or Desmostylia
(SEE ALSO under species)
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2015 |
Chiba et al. (Desmostylidae: Ounalashkastylus tomidai, n.gen.n.sp., Olig.-Mioc., Alaska; cf. Vanderhoofius sp., Middle Mioc., Hokkaido) |
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Vanderhoofius Reinhart, 1959
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2015 |
Chiba et al. (cf. Vanderhoofius sp., Middle Mioc., Hokkaido) |
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Ounalashkastylus tomidai Chiba et al., 2015
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2015 |
Chiba et al. (n.gen.n.sp.; Olig.-Mioc., Alaska) |
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Ounalashkastylus Chiba et al., 2015
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2015 |
Chiba et al. (n.gen.; Olig.-Mioc., Alaska) |
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