This is a cast, or model, of the lower jaw of a Triceratops, which lived during the Cretaceous. Triceratops was a four legged plant eater best known for the huge horns that grew above its eyes. Some of the horns could be up to three feet long! This cast is from "Kelsey," a Triceratops on display in "Dinosphere" at The Children's Museum of Indianapolis. “Kelsey” was found by the Herbst family, and named after their granddaughter.
The Children's Museum of Indianapolis
This file is licensed under a CC BY-SA 3.0 license by The Children’s Museum of Indianapolis.
Paleontology -- Cretaceous
Further information on this record can be found at its source.