Temporal range: Eocene, 53 Ma
Bloch et al. 1998
Batodonoides vanhouteni is an extinct shrew-like mammal, thought to be the smallest mammal that ever lived. Based on the size of its molar teeth, it is estimated that Batodonoides vanhouteni weighed only 0.93–1.82 grams (0.033–0.064 oz) (with 1.3 g (0.046 oz) most likely). They lived about 53 million years ago during the early Eocene Epoch in North America. The species is a member of the Order Insectivora.
The fossilized remains of a juvenile, consisting of a mandible and some teeth, were discovered in 1998 in Wyoming in 53-million-year-old rocks. Another member of the genus is known from California, also from the Early Eocene.
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