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Subgroups †Varanopidae?
Metopophora Spindler et al., 2018 †Ophiacodontidae
Haptodontiformes Spindler et al., 2018 †Ianthodon †Milosaurus †Kenomagnathus Sphenacomorpha...
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Haptodontiformes...
- †Eothyrididae †Phreatophasma?
Eupelycosauria †Ophiacodontidae †Varanopidae?
Haptodontiformes †Edaphosauridae
Sphenacodontia Synonyms Theropsida (Seeley, 1895) "Pelycosauria"...
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Haptodontiformes...
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Haptodontiformes...
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Haptodontiformes...
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Haptodontiformes...
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Haptodontiformes...
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Haptodontiformes...
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Haptodontiformes...