Debeerius ellefseni
Grogan & Lund, 2000
Classification: Euchondrocephali incert. sedis Debeeriidae
Reference of the original description
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), 219–245
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), 219–245
Description:
Citation: Debeerius ellefseni Grogan & Lund, 2000: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 09/2026
Description
Original diagnosis after Grogan & Lund, 2000 [3203]: Genus distinguished from the other family member, Heteropetalus elegantulus, by a postorbital region comprising 15–25% of the neurocranium, an antorbitally positioned quadratomandibular articulation, anteriorly elongate ventral hyoid and branchial elements, dorsal fin squammation restricted to radials, pectoral basals dominated by metapterygium, and a long, mobile anterior dorsal spine. Dentition restricted to anterior one-third of mandible and corresponding portion of palatoquadrate
Original diagnosis after Grogan & Lund, 2000 [3203]: Genus distinguished from the other family member, Heteropetalus elegantulus, by a postorbital region comprising 15–25% of the neurocranium, an antorbitally positioned quadratomandibular articulation, anteriorly elongate ventral hyoid and branchial elements, dorsal fin squammation restricted to radials, pectoral basals dominated by metapterygium, and a long, mobile anterior dorsal spine. Dentition restricted to anterior one-third of mandible and corresponding portion of palatoquadrate
References
Rise and diversification of chondrichthyans in the Paleozoic. Paleobiology, 50(2), 271–284
DOI: 10.1017/pab.2024.1
The Palaeozoic assembly of the holocephalan body plan far preceded post-Cretaceous radiations into the ocean depths. Proceedings of the Royal Society B-Biological Sciences, 291(2033), Article 20241824
DOI: 10.1098/rspb.2024.1824
Handbook of Paleoichthyology, Vol. 3D: Chondrichthyes Paleozoic Elasmobranchii: Teeth Verlag Dr. Friedrich Pfeil, pp. 168, 154 fig., 4 Tab.
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), 219–245
DOI: 10.1002/(SICI)1097-4687(200003)243:3<219::AID-JMOR1>3.0.CO;2-1
Rise and diversification of chondrichthyans in the Paleozoic. Paleobiology, 50(2), 271–284
DOI: 10.1017/pab.2024.1
The Palaeozoic assembly of the holocephalan body plan far preceded post-Cretaceous radiations into the ocean depths. Proceedings of the Royal Society B-Biological Sciences, 291(2033), Article 20241824
DOI: 10.1098/rspb.2024.1824
Handbook of Paleoichthyology, Vol. 3D: Chondrichthyes Paleozoic Elasmobranchii: Teeth Verlag Dr. Friedrich Pfeil, pp. 168, 154 fig., 4 Tab.
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), 219–245
DOI: 10.1002/(SICI)1097-4687(200003)243:3<219::AID-JMOR1>3.0.CO;2-1
