Heteropetalus

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

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 is a member of the family Debeeriidae and the order Debeeriiformes.^[4]

References

1. "Heteropetalus elegantulus". mindat.org. Retrieved 26 October 2024.
2. 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.
3. 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.
4. Grogan, Eileen D.; Lund, Richard (2000). <219::aid-jmor1>3.3.co;2-t "Debeerius ellefseni (Fam. Nov., Gen. Nov., Spec. Nov.), an autodiastylic chondrichthyan from the Mississippian Bear Gulch Limestone of Montana (USA), the relationships of the chondrichthyes, and comments on gnathostome evolution". Journal of Morphology. 243 (3): 219. doi:10.1002/(sici)1097-4687(200003)243:3<219::aid-jmor1>3.3.co;2-t. ISSN 0362-2525.