ammonites
Bisonalveus Gazin 1956 (placental mammal)

Mammalia - Cimolesta - Pentacodontidae

Full reference: C. L. Gazin. 1956. Palaeocene mammalian faunas of the Bison Basin in south-central Wyoming. Smithsonian Miscellaneous Collections 131(6):1-57

Parent taxon: Pentacodontidae according to L. Van Valen 1967

Sister taxa: Amaramnis, Aphronorus, Coriphagus, Pentacodon, Protentomodon

Subtaxa: Bisonalveus browni, Bisonalveus holtzmani

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Type: Bisonalveus browni

Ecology: scansorial insectivore