| Heteropetalus Temporal range: Mississippian PreꞒ Ꞓ O S D C P T J K Pg N | |
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| Well-preserved specimen of H. elegantulus | |
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| Life restoration of H. elegantulus | |
Scientific classification 
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| Domain: | Eukaryota |
| 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 | |
Heteropetalus is a genus of chondrichthyan from the Mississippian age Bear Gulch Limestone of Montana, United States. One species, H. elegantulus, is known. Known fossils of Heteropetalus are exceptionally well preserved, displaying details of the soft tissue anatomy such as an opercular cover over the gills.
References
- "Heteropetalus elegantulus". mindat.org. Retrieved 26 October 2024.
- Lund, Richard (1977-09-30). "A new petalodont (Chondrichthyes, Bradyodonti) from the Upper Mississippian of Montana". Annals of the Carnegie Museum. 46: 129––155. doi:10.5962/p.330526.
- Grogan, Eileen; Lund, Richard (1995). "Pigment patterns; soft anatomy and relationships of Bear Gulch Chondrichthyes (Namurian E2b; Lower Carboniferous; Montana; USA)(Namurian E2b; Lower Carboniferous; Montana; USA)". Geobios. Premiers Vertandébrandés et Vertandébrandés Infandérieurs. 28: 145–146. doi:10.1016/S0016-6995(95)80102-2.
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