Protognathus

Protognathus may refer to:

  • Protognathus, genus of ground beetle described in 1950 but later considered as a synonym of Pseudognathaphanus.
  • Protognathosaurus, genus of sauropod that is originally described as Protognathus.
  • Protognathodus, genus of conodont, sometimes described as Protognathus.
  • Protognathinus, genus of extinct beetle that is sometimes misspelled as Protognathus.