Pycnosteus

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 .^[1]

Pycnosteus Temporal range: Eifelian–Givetian PreꞒ Ꞓ O S D C P T J K Pg N
Pycnosteus tuberculata
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Agnatha
Order:	Heterostraci
Suborder:	Psammosteida
Family:	Pycnosteida
Genus:	Pycnosteus Preobrazensky, 1911
Binomial name
Pycnosteus tuberculata Preobrazensky, 1911