The common shrew opossums (genus Caenolestes) are members of the family Caenolestidae. They are found in Colombia, Ecuador, Peru, and Venezuela. The most recently discovered species is C. sangay.
Phylogeny
Phylogeny of Caenolestes
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Caenolestes
C. fuliginosus (Tomes 1863) (Dusky shrew opossum)
C. convelatus Anthony 1924 (Northern shrew opossum)
C. sangay Oajala-Barbour et al. 2013 (Eastern shrew opossum)
C. caniventer Anthony 1921 (Gray-bellied shrew opossum)
C. condorensis Albuja & Patterson 1996 (Andean shrew opossum)