| Polymorphodon Temporal range: Middle Triassic,
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| Diagram of the premaxilla and maxilla | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Archosauromorpha |
| Clade: | Archosauriformes |
| Clade: | Eucrocopoda |
| Genus: | Polymorphodon Sues et al., 2020 |
| Type species | |
| †Polymorphodon adorfi Sues et al., 2020
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Polymorphodon is an extinct genus of archosauriform reptile from the Middle Triassic of Germany. The only known species is Polymorphodon adorfi, discovered in Lower Keuper (Erfurt Formation) deposits at a quarry in Eschenau, Germany. Polymorphodon is notable for its heterodont dentition, with long and conical premaxillary teeth followed by thin maxillary teeth with large serrations. Maxillary teeth near the back of the mouth are short and leaf-shaped, similar to some living and extinct reptiles with a herbivorous or omnivorous diet. This may suggest that Polymorphodon had some reliance on plants in its diet, a rarity among basal archosauriforms, most of which are carnivores.[1]
- ^ Sues, Hans-Dieter; Schoch, Rainer R.; Sobral, Gabriela; Irmis, Randall B. (2020-06-23). "A new archosauriform reptile with distinctive teeth from the Middle Triassic (Ladinian) of Germany". Journal of Vertebrate Paleontology. 40 (1): e1764968. Bibcode:2020JVPal..40E4968S. doi:10.1080/02724634.2020.1764968. ISSN 0272-4634. S2CID 221749201.