Ferromirum oukherbouchi
Frey, Coates, Tietjen, Rücklin & Klug, 2020
Classification: Holocephali Symmoriiformes incert. fam.
Reference of the original description
A symmoriiform from the Late Devonian of Morocco demonstrates a derived jaw function in ancient chondrichthyans. Communications Biology, 3, Article 681
A symmoriiform from the Late Devonian of Morocco demonstrates a derived jaw function in ancient chondrichthyans. Communications Biology, 3, Article 681
Description:
Citation: Ferromirum oukherbouchi Frey, Coates, Tietjen, Rücklin & Klug, 2020: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 08/2026
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Description
Original diagnosis after Frey, Coates, Tietjen, Rücklin & Klug, 2020 [29092]: A small symmoriid with slender body; head with short triangular rostrum and subterminal gape; supraorbital shelf with concave lateral margin; orbits large (ca. 30% of neurocranium length) with sclerotic ring; narrow interorbital space; narrow suborbital shelf (ca. 7% of neurocranium width); cleavershaped palatoquadrate with anterolaterally directed articulation with postorbital process; scalloped margins of gape suggest around nine upper and lower tooth families; teeth small, cladodont with a prominent medium cusp with small lateral cusps and minute intermediate cusps; slender ceratohyal with posteroventral lateral flange engaging with Meckel’s cartilage; paired hypohyals anteriorly directed; no basihyal; distinguished from all other symmoriids by presence of pectoral-level, slender dorsal fin spine, smooth with posteriorly curved apex.
Original diagnosis after Frey, Coates, Tietjen, Rücklin & Klug, 2020 [29092]: A small symmoriid with slender body; head with short triangular rostrum and subterminal gape; supraorbital shelf with concave lateral margin; orbits large (ca. 30% of neurocranium length) with sclerotic ring; narrow interorbital space; narrow suborbital shelf (ca. 7% of neurocranium width); cleavershaped palatoquadrate with anterolaterally directed articulation with postorbital process; scalloped margins of gape suggest around nine upper and lower tooth families; teeth small, cladodont with a prominent medium cusp with small lateral cusps and minute intermediate cusps; slender ceratohyal with posteroventral lateral flange engaging with Meckel’s cartilage; paired hypohyals anteriorly directed; no basihyal; distinguished from all other symmoriids by presence of pectoral-level, slender dorsal fin spine, smooth with posteriorly curved apex.
Remarks
shark-references Species-ID=16035;
type species of Ferromirum Frey, Coates, Tietjen, Rücklin & Klug, 2020 by monotypy (Art. 68.3 ICZN)
shark-references Species-ID=16035;
type species of Ferromirum Frey, Coates, Tietjen, Rücklin & Klug, 2020 by monotypy (Art. 68.3 ICZN)
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
A symmoriiform from the Late Devonian of Morocco demonstrates a derived jaw function in ancient chondrichthyans. Communications Biology, 3, Article 681
DOI: 10.1038/s42003-020-01394-2
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
A symmoriiform from the Late Devonian of Morocco demonstrates a derived jaw function in ancient chondrichthyans. Communications Biology, 3, Article 681
DOI: 10.1038/s42003-020-01394-2
