@article{8716794634414dc9b1430305ba1eeb9c,
title = "The Late Cretaceous Chimaeroid Fish, Ischyodus bifurcatus Case (Chondrichthyes: Holocephali), from California, USA, and Its Paleobiogeographical Significance",
abstract = "A nearly complete right mandibular tooth plate of Ischyodus bifurcatus Case (Holocephali: Chimaeroidei) is reported from the Point Loma Formation (upper Campanian) of the Upper Cretaceous Rosario Group in southern California, USA. The individual is estimated to have measured nearly 1 m in total body length. Remains of I. bifurcatus have been reported from marine rocks deposited in epicontinental seas and continental shelf paleoenvironments of temperate latitudes in the Northern Hemisphere. Previous records of the species consist of specimens from Santonian to Maastrichtian strata of the US (Delaware, New Jersey, North Carolina, Georgia, Alabama, Arkansas, Montana, and Wyoming), Sweden, and European Russia. The tooth plate described herein is the first verifiable record of I. bifurcatus from California, and, more significantly, represents the only known definite Mesozoic record of Ischyodus from the entire North Pacific region.",
keywords = "chimaeroid fish, Ischyodus, Late Cretaceous, North Pacific, tooth plate",
author = "Johnson-Ransom, {Evan D.} and Popov, {Evgeny V.} and Dem{\'e}r{\'e}, {Thomas A.} and Kenshu Shimada",
note = "Funding Information: We thank the Department of Environmental Science and Studies and the Department of Biological Sciences at DePaul University as well as DePaul{\textquoteright}s McNair Scholars and Arnold L. Mitchem Fellowship Program for providing various support especially to EDJ-R as well as to the present project. The work of EVP in particular was supported by the Russian Foundation for Basic Research (project no. 18-05-01045) and by the subsidy of the Russian Government to support the {\textquoteleft}Program of Competitive Growth of Kazan Federal University among World{\textquoteright}s Leading Academic Centers.{\textquoteright} Comments and suggestions made by D. J. Cicimurri, Y. Takakuwa, and the editor greatly improved the quality of this paper. Funding Information: We thank the Department of Environmental Science and Studies and the Department of Biological Sciences at DePaul University as well as DePaul's McNair Scholars and Arnold L. Mitchem Fellowship Program for providing various support especially to EDJ-R as well as to the present project. The work of EVP in particular was supported by the Russian Foundation for Basic Research (project no. 18-05-01045) and by the subsidy of the Russian Government to support the 'Program of Competitive Growth of Kazan Federal University among World's Leading Academic Centers.' Comments and suggestions made by D. J. Cicimurri, Y. Takakuwa, and the editor greatly improved the quality of this paper. Publisher Copyright: {\textcopyright} 2018 by the Palaeontological Society of Japan.",
year = "2018",
month = oct,
day = "1",
doi = "10.2517/2018PR004",
language = "English",
volume = "22",
pages = "364--372",
journal = "Paleontological Research",
issn = "1342-8144",
publisher = "Palaeontological Society of Japan",
number = "4",
}