Acristavus

crestless grandfather

• a · Greek/Latin · without
• crista · Latin · crest
• avus · Latin · grandfather, ancestor

The name means "crestless grandfather". It combines the Latin "a" (without), "crista" (crest) and "avus" (grandfather or ancestor). It was chosen because this hadrosaur lacked the bony crest or solid nasal hump of its close relatives, and it sits near the base of the brachylophosaurin lineage.

Named by

Gates et al.

Year named

2011

Period

Late Cretaceous

Stage

Campanian

Found in

Two Medicine Formation, Montana, USA

A hadrosaurid (saurolophine, brachylophosaurin) known from the type species Acristavus gagslarsoni. The species name honours Gary Larson, creator of The Far Side.