ammonites
Leptictis thomsoni Matthew 1903 (placental mammal)

Mammalia - Theriiformes - Leptictidae

Alternative combination: Ictops thomsoni

Belongs to Leptictis according to M. J. Novacek 1976

Sister taxa: Leptictis acutidens, Leptictis bullatus, Leptictis dakotensis, Leptictis douglassi, Leptictis haydeni, Leptictis montanus, Leptictis wilsoni

Type specimen: Its type locality is Pipestone Springs, which is in a Chadronian terrestrial claystone in the Renova Formation of Montana

Ecology: ground dwelling insectivore-carnivore