Ptychodus cf. decurrens

Agassiz, 1838


Classification: Elasmobranchii incert. sedis Ptychodontidae

Reference of the original description
Agassiz, L. (1838)
Recherches sur les poissons fossiles, 11th livraison (November 1838). Petitpierre et Prince (text) and H. Nicolet (plates), Neuchâtel, vol. 3: [73]-140, pl. 1a, 8a, 8b, 15, 17, 19, 20, 24, 25b, 30, 31, 32, 33, 34, 35, 39, 40.

Types
Ptychodus cf. decurrens



Description:


Citation: Ptychodus cf. decurrens Agassiz, 1838: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 11/2024

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Remarks
shark-references Species-ID=5343;
synonym of Ptychodus mammillaris after Woodward (1889) p.133 [2593] Agassiz [27814] Vol. III, p 154, pl. 25b, figs. 3, 5; valid after WILLIAMSON et al. (1991) [4309]; VERMA et al. (2012) [14419];

Links: Original description of Agassiz Recherches sur les Poissons Fossiles (1833-1843)

References
Phillips, A. (2008)
A Late Cretaceous (Cenomanian) marine vertebrate-rich bioclastic horizon from the northeastern margin of the Western Interior Seaway, Canada. MSc. thesis in Earth Sciences, Carleton University, Ottawa, 237 pp.
Trbusek, J. (1999)
Upper Cretaceous Sharks and Rays from the Prokop Opencast Mine at Brezina Near Moravska Trebova. Acta Universitatis Palackianae Olmucensis, Geologica, 36, 51–61