Heteropetalus

Heteropetalus is a genus of chondrichthyan from the Mississippian age Bear Gulch Limestone of Montana, United States. One species, H. elegantulus, is known.^[1][2] Known fossils of Heteropetalus are exceptionally well preserved, displaying details of the soft tissue anatomy such as an opercular cover over the gills.^[3]

Heteropetalus Temporal range: Mississippian PreꞒ Ꞓ O S D C P T J K Pg N
Well-preserved specimen of H. elegantulus
Life restoration of H. elegantulus
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Holocephali
Order:	†Debeeriiformes
Family:	†Debeeriidae
Genus:	†Heteropetalus Lund, 1977
Species:	†H. elegantulus
Binomial name
†Heteropetalus elegantulus Lund, 1977