Phlegethontioidea
| Phlegethontioidea | |
|---|---|
| Fossil of Pseudophlegethontia turnbullorum in the Field Museum of Natural History. | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Clade: | Sarcopterygii | 
| Clade: | Tetrapodomorpha | 
| Order: | †Aistopoda | 
| Clade: | †Phlegethontioidea Anderson et al., 2003 | 
Phlegethontioidea is a clade of aistopod tetrapodomorphss including the families Phlegethontiidae and Pseudophlegethontiidae. It is a stem-based taxon defined in phylogenetic terms as all aistopods sharing a more recent common ancestor with Phlegethontia than Oestocephalus.