thumb|left|Teeth of Janassa Janassa is an extinct genus of petalodont cartilaginous fish that lived in marine environments in what is now central United States of America and Europe during the Carboniferous and upper Permian.
thumb|left|Teeth of Janassa Janassa is an extinct genus of petalodont cartilaginous fish that lived in marine environments in what is now central United States of America and Europe during the Carboniferous and upper Permian.
It is known from teeth and a few poorly preserved body fossils from Germany (Kupferschiefer, Upper Permian) and England (Marl Slate, Upper Permian).
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).