This Specimen has been sold.
.26" Cretaceous Mammal (Alphadon) Tooth - Montana
This is a .26" tooth of a late Cretaceous marsupial (Alphadon) from the Judith River Formation, Montana. This specimen is a premolar in very good condition with good enamel.
Alphadon is a genus of extinct mammals that closely resembled modern opossum. There are three species known from the Judith River Formation.