Palaeoctonus is an extinct genus of archosaur (possibly phytosaur) known only from isolated teeth. The name is derived from Greek (palaios meaning "ancient", -ktonos meaning "killer"). The genus is believed to have flourished during the Upper (Late) Triassic period.

Palaeoctonus
Temporal range: Late Triassic, 211–205 Ma
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Archosauromorpha
Clade: Archosauriformes
Order: Phytosauria (?)
Genus: Palaeoctonus
Cope, 1877
Species
  • P. appalachianus
  • P. aulacodus
  • P. cyphodon
  • P. dumblianus
  • P. orthodon
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