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软食中兽科; 化石时期：晚古新世至中始新世
科学分类
界：	动物界 Animalia
门：	脊索动物门 Chordata
纲：	哺乳纲 Mammalia
目：	†中爪獸目 Mesonychia
科：	†软食中兽科 Hapalodectidae; Szalay & Gould, 1966
屬
	軟食中獸屬 Hapalodectes; 软残中兽属 Hapalorestes; 後軟食中獸屬 Metahapalodectes; 洛河中獸屬 Lohoodon; 河南中獸屬 Honanodon;

軟食中獸科（Hapalodectidae）是已滅絕的中爪獸目，生存於古新世至始新世的北美洲及亞洲^[1]，體型相對較細小，只有1-8公斤重。^[2]軟食中獸科與著名的中爪獸科稍為不同，牠們的牙齒適合切開食物，尤其是肉類，而其他的中爪獸目（如中爪獸或中國中獸）的牙齒則適合咬碎骨頭。^[2]軟食中獸科曾被認為是中爪獸科的亞科^[3]，但從河塘軟食中獸的頭顱骨得知一些不同之處而足以成立自己的科。^[4]河塘軟食中獸的眶後棒在眼窩後閉合^[4]，但其他的中爪獸目則沒有這個特徵。對於軟食中獸科的骨骼所知甚少，而顱後骨骼則只有肱骨被描述。這根骨頭的形態顯示牠們較中爪獸目不怎麼適合陸上運動。^[5]

參考

^ McKenna, M. C, and S. K. Bell. Classification of Mammals Above the Species Level. Columbia University Press. 1997. ISBN 023111012X.
^ ^2.0 ^2.1 Gunnell, G.R. and P.D. Gingerich. New hapalodectid Hapalorestes lovei (Mammalia, Mesonychia) from the early middle Eocene of northwestern Wyoming. Contributions from the Museum of Paleontology, The University of Michigan. 1989, 29 (15): 413–418.
^ Szaalay, F.S. and S.J. Gould. Asiatic Mesonychidae (Mammalia, Condylarthra). Bulletin of the American Museum of Natural History. 1966, 132 (2): 127–174.
^ ^4.0 ^4.1 Ting, S. and C. Li. The skull of Hapalodectes (?Acreodi, Mammalia), with notes on some Chinese Paleocene mesonychids. Vertebrata PalAsiatica. 1987, 25: 161–186.
^ O'Leary, M.A. Morphology of the humerus of Hapalodectes (Mammalia, Mesonychia). American Museum Novitates. 1998, 3242: 1–6.

[McK&B-1] McKenna, M. C, and S. K. Bell. Classification of Mammals Above the Species Level. Columbia University Press. 1997. ISBN 023111012X.

[Gunnell96-2] 2.0 ^2.1 Gunnell, G.R. and P.D. Gingerich. New hapalodectid Hapalorestes lovei (Mammalia, Mesonychia) from the early middle Eocene of northwestern Wyoming. Contributions from the Museum of Paleontology, The University of Michigan. 1989, 29 (15): 413–418.

[SzalayGould-3] Szaalay, F.S. and S.J. Gould. Asiatic Mesonychidae (Mammalia, Condylarthra). Bulletin of the American Museum of Natural History. 1966, 132 (2): 127–174.

[Ting&Li-4] 4.0 ^4.1 Ting, S. and C. Li. The skull of Hapalodectes (?Acreodi, Mammalia), with notes on some Chinese Paleocene mesonychids. Vertebrata PalAsiatica. 1987, 25: 161–186.

[OLeary98-5] O'Leary, M.A. Morphology of the humerus of Hapalodectes (Mammalia, Mesonychia). American Museum Novitates. 1998, 3242: 1–6.

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軟食中獸科

參考

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