Ozarcus mapesae

Pradel, Maisey, Tafforeau, Mapes & Mallatt, 2014


Classification: Holocephali Symmoriiformes Falcatidae

Reference of the original description
Pradel, A. & Maisey, J.G. & Tafforeau, P. & Mapes, R.H. & Mallatt, J. (2014)
A Palaeozoic shark with osteichthyan-like branchial arches. Nature, 509, 608–611

Types
Ozarcus mapesae
Holotype: AMNH(fossil): FF20544;


Description:


Citation: Ozarcus mapesae Pradel, Maisey, Tafforeau, Mapes & Mallatt, 2014: 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 Pradel, Maisey, Tafforeau, Mapes & Mallatt, 2014 [20474]: Falcatidae possessing small cladodont, pentacuspid and symmetrical teeth; ten upper and lower tooth families; palatoquadrate lacks a continuous posterior quadrate margin; no dermal denticles covering the top of the head; no ‘spine–brush’ complex; no laterally extended supraorbital shelf; laterally extended antorbital process that overlies a suborbital process possessing a series of four ridges and grooves for the articulation with the palatoquadrate (SupplementaryNotes and Extended Data Fig. 2).

Remarks
shark-references Species-ID=14000;
type species of Ozarcus Pradel, Maisey, Tafforeau, Mapes & Mallatt, 2014 [20573] by original designation (Art. 68.2 ICZN);

References
Bronson, A. & Pradel, A. & Gueriau, P. & Landman, N. & Mapes, R. & Otoo, B. & Maisey, J.G. (2026)
Vertebrate assemblage and depositional environment of the Fayetteville Shale (Upper Mississippian, middle Chesterian). Geobios, 94, in press
DOI: 10.1016/j.geobios.2025.11.002
Schnetz, L. & Dunne, E.M. & Feichtinger, I. & Butler, R.J. & Coates, M.I. & Sansom, I.J. (2024)
Rise and diversification of chondrichthyans in the Paleozoic. Paleobiology, 50(2), 271–284
DOI: 10.1017/pab.2024.1
Brownstein, C.D. & Near, T.J. & Dearden, R.P. (2024)
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
Pradel, A. & Maisey, J.G. & Tafforeau, P. & Mapes, R.H. & Mallatt, J. (2014)
A Palaeozoic shark with osteichthyan-like branchial arches. Nature, 509, 608–611
DOI: 10.1038/nature13195