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1991-10
Vol. 21, Fasc. 1-2
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PalaeoVertebrata Vol. 21, Fasc. 1-2
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Article

A new species of chimaeroid fish from the upper Paleocene (Thanetian) of Maryland, USA
Gerard R. Case
Published online: 29/10/1991

Keywords: Chimaeroid nov. sp.; Maryland; U.S.A.; Upper Paleocene

https://doi.org/10.18563/pv.21.1-2.85-94

References: 9

Cite this article: Gerard R. Case, 1991. A new species of chimaeroid fish from the upper Paleocene (Thanetian) of Maryland, USA. PalaeoVertebrata 21 (1-2): 85-94. doi: 10.18563/pv.21.1-2.85-94

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Abstract

The recent discovery of several mandibular toothplates of a chimaeroid fish at a dig in the area of the Landover Mall, near Landover, Prince Georges County, Maryland, brings to our attention a new species of the chimaeroid, Ischyodus.
 Although superficially reminiscent of the European chimaeroid toothplates of Ischyodus thurmanni (cf. text-fig. 2), I. williamsae nov. sp. probably has a more closer relationship to I. bifurcatus CASE, 1978, of the Upper Cretaceous of New Jersey and Delaware. 



Published in Vol. 21, Fasc. 1-2 (1991)

References

BROUWERS, E.M. & HAZEL, J.E., 1978. - Ostracoda and correlation of the Severn Formation (Navarroan; Maestrichtian) of Maryland. S.E.P.M. Pal. Mon. 1: 1-52.

CAPPETTA, H. & CASE, G.R., 1975. - Contribution à l'étude des sélaciens du Groupe Monmouth (Campanien-Maestrichtien) du New-Jersey. Palaeontographica, Stuttgart, (A), 151: 1-46.

CASE, G.R., 1978. - Ischyodus bifurcatus, a new species of chimaeroid fish from the Upper Cretaceous of New Jersey. Géobios, Lyon, 11 (1): 21-29. https://doi.org/10.1016/S0016-6995(78)80016-3

CASE, G.R., 1987. - Borodinopristis schwimmeri, a new ganopristine sawfish from the Upper Blufftown Formation (Campanian) of the Upper Cretaceous of Georgia. Bull. N.J. Acad. Sci., 32 (1): 25-33.

CASE, G.R., 1989. - Paleocarcharodon orientalis (Sinzow) (Neoselachii: Cretoxyrhinidae), from the Paleocene of Maryland, USA. Palaeovertebrata, Montpellier, 19 (1): 1-6. https://doi.org/10.18563/pv.19.1.1-6

CASE, G.R. & HERMAN, J., 1973. - Une épine dorsale du chiméroïde Edaphodon cf. bucklandi (Agassiz) dans l'Yprésien du Maroc. Bull. Soc. belge Geol. Paleont. Hydrol., Bruxelles, 82 (3): 445-449.

CASE, G.R. & SCHWIMMER, D.R., 1988. - Late Cretaceous fish from the Blufftown Formation (Campanian) in Western Georgia. J. Paleont., 62 (2): 290-301. https://doi.org/10.1017/S0022336000029942

GURR, P.R., 1963. - A new fish fauna from the Woolrich Bottom Bed (Sparnacian) of Herne Bay, Kent. Proc. Geol. Assn., 73: 419-447. https://doi.org/10.1016/S0016-7878(62)80032-7

PICTET, F.J. & CAMPICHE, G., 1858. - Description des fossiles du terrain crétacé des environs de Sainte-Croix. Mém. Paléont. Suisse, (2), 2: 1-380, 46 pl. 
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