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:
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|---|---|
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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
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| Binomial name | |
| †Heteropetalus elegantulus Lund, 1977
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References
edit- ^ "Heteropetalus elegantulus". mindat.org. Retrieved 26 October 2024.
- ^ Lund, Richard; 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: 145–146. doi:10.1016/S0016-6995(95)80102-2.
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