
Phlegethontia is an extinct genus of aïstopod tetrapodomorphs from the Carboniferous and Permian periods of Europe and North America. upright|thumb|left|Early restoration of P. longissima
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Phlegethontia is an extinct genus of aïstopod tetrapodomorphs from the Carboniferous and Permian periods of Europe and North America. upright|thumb|left|Early restoration of P. longissima
It was about long, and possessed a lightly built skull with many openings, unlike some earlier relatives.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).