| Betonnia Temporal range: Early Paleocene,
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| Genus: | Betonnia Williamson, Weil & Standhardt, 2011
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Betonnia is an extinct genus of cimolestid mammal which existed in New Mexico, during the early Paleocene (middle and late Puercan age). Its fossils have been recovered from the Nacimiento Formation, San Juan Basin, New Mexico. It was first named by Thomas E. Williamson, Anne Weil and Barbara Standhardt in 2011 and the type species is Betonnia tsosia.[1]