Pycnosteus is an extinct genus of jawless fish from the Devonian. It is thought to have cruised through vegetation, eating small invertebrates which it knocked…
Pycnosteus is an extinct genus of jawless fish from the Devonian. It is thought to have cruised through vegetation, eating small invertebrates which it knocked loose.
References
Fishes of the World by Joseph S. Nelson Vertebrate Fossils and the Evolution of Scientific Concepts by W. Sargeant
Gebaseerd op: Wikipedia — Pycnosteus · auteursgeschiedenis.
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