Lizard bones from the Late Miocene of Nebraska were attributed to a new species of Peltosaurus called P. minimus in 1976, extending the fossil range of Peltosaurus and Glyptosaurinae into the Neogene.
The discovery of lizard bones from the Late Miocene in Nebraska led to the identification of a new species of Peltosaurus named P. minimus, which expanded the known fossil record for both Peltosaurus and the Glyptosaurinae family into the Neogene era.