Protognathus Explained

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.