Lund, R. & Garton, E.R. & Weishampel, D.B. (1979)
Fossil vertebrates of the Pennsylvanian system of West Virginia. In 9th Int. Congr. Carboniferous Stratigr. and Geol., Field Trip No. 1, AGI Selected Guidebook Series No.1, 105–107

Masson, A.G. & Rust, B.R. (1984)
Freshwater shark teeth as paleoenvironmental indicators in the Upper Pennsylvanian Morien Group of the Sydney Basin, Nova Scotia. Canadian Journal of Earth Sciences, 21(10), 1151–1155
DOI: 10.1139/e84-120

Schultze, H.-P. (1985)
Marine to onshore vertebrates in the Lower Permian of Kansas and their paleoenvironmental implications. The University of Kansas Paleontological Contributions, 113, 1–18

Zajíc, J. & Štamberg, S. (1986)
Summary of the Permocarboniferous freshwater fauna of the limnic basins of Bohemia and Moravia. Acta Musei Reginaehradecensis, Ser. A, Scientiae Naturales, 20, 61–82

Zajíc, J. (1988)
Vertebrates from boreholes in Permo-Carboniferous limnic basins of the Bohemian Massif [Abstract]. Rotliegendes Lacustrine Basins Workshop, Ksiaz Castle: 1–2

Zajíc, J. (1988)
Recent results of the study of Permo-Carboniferous Vertebrates from boreholes in Bohemian limnic basins [Abstract]. Symosium on Results of the Research on the Permocarboniferous Fauna, Hradec Králové: 11–12

Poplin, C. & Heyler, D. (1989)
Evolution et phylogénie des Xenacanthifonnes (=Pleuracanthiformes) (Pisces: Chondrichthyes). Annales de Paléontologie, 75(4), 187–222

Cunningham, C.R. (1993)
Hamilton Fossil-Lagerstätte (Upper Pennsylvanian, Greenwood County, Kansas): Internal Stratigraphy and Addition to the Microfossil Assemblage. Transactions of the Kansas Academy of Science, 96(1/2), 131–139

Soler-Gijón, R. (1995)
Evidence of predator-prey relationship in xenacanth sharks of the Upper Carboniferous (Stephanian C) from Puertollano, Spain. Geobios, 28(Supplement 2), 151–156
DOI: 10.1016/S0016-6995(95)80104-9

Schindler, T. (1997)
Neue lithostratigraphische Leithorizonte im unteren Rotliegend des Saar-Nahe-Beckens (U.Perm, SW-Deutschland). 1. Leithorizonte der lithostratigraphischen Einheit Lauterecken- bis Odernheim-Schichten L-O5 (Boy & Fichter). Mainzer geowissenschaftliche Mitteilungen, 26, 37–44

Soler-Gijón, R. (1999)
Occipital spine of Orthacanthus (Xenacanthidae, Elasmobranchii): structure and growth. Journal of Morphology, 242(1), 1–45
DOI: 10.1002/(SICI)1097-4687(199910)242:1<1::AID-JMOR2>3.0.CO;2-9

Goto, M. & Kaneko, N. & Suzuki, Y. & Okura, M. (2000)
First record of a xenacanth shark tooth from the Palaeozoic of Japan. Journal of the Geological Society of Japan, 106(11), 737–742

Zajíc, J. (2000)
Vertebrate zonation of the non-marine Upper Carboniferous - Lower Permian basins of the Czech Republic. Courier Forschungsinstitut Senckenberg, 223, 563–575

Zidek, J. & Johnson, G.D. & May, W. & Claborn, A. (2003)
New specimens of xenacanth and hybodont sharks (Elasmobranchii: Xenacanthida and Hybodontoidea) from the Lower Permian of southwestern Oklahoma. Oklahoma Geology Notes, 63(4), 136–147

Ginter, M. (2004)
Devonian sharks and the origin of Xenacanthiformes. In ARRATIA, G., WILSON, M. V. H. and CLOUTIER, R. (Eds.), Recent advances in the origin and early radiation of vertebrates. Honoring Hans–Peter Schultze: 473–486

Johnson, G.D. (2005)
Underdeveloped and unusual xenacanth shark teeth from the Lower Permian of Texas. Proceedings of the South Dakota Academy of Science, 84, 215– 223

Gillis, J.A. & Donoghue, P.C.J. (2007)
The Homology and Phylogeny of Chondrichthyan Tooth Enameloid. Journal of Morphology, 268(1), 33–49
DOI: 10.1002/jmor.10501

Maisey, J.G. (2008)
The Postorbital Palatoquadrate Articulation in Elasmobranchs. Journal of Morphology, 269(8), 1022–1040
DOI: 10.1002/jmor.10642

Niedźwiedzki, R. (2008)
Triassic selachians in Poland, a review. Ichthyolith Issues, Special Publication, 11, 38–42

Šimůnek, Z. & Zajíc, J. & Drábková, J. (2008)
Biota of the Líně Formation (Stephanian C), mode of preservation and its palaeoecological interpretation [Abstract]. 11th Coal Geology Conference Prague 2004, Volume of Abstracts: 35–36

Štamberg, S. & Zajíc, J. (2008)
Carboniferous and Permian faunas and their occurence in the limnic basins of the Czech Republic. Muzeum vychodních Cech v Hradci Králové, 2008

Johnson, G.D. & Thayer, D.W. (2009)
Early Pennsylvanian xenacanth chondrichthyans from the Swisshelm Mountains, Arizona, U.S.A. Acta Palaeontologica Polonica, 54(4), 649–668
DOI: 10.4202/app.2008.0051

Lerner, A.J. & Lucas, S.G. & Spielmann, J.A. & Krainer, K. & Dimichele, W.A. & Chaney, D.S. & Schneider, J.W. & Nelson, W.J. & Ivanov, A.B. (2009)
The Biota and Paleoecology of the Upper Pennsylvanian (Missourian) Tinajas Locality, Socorro County, New Mexico. New Mexico, New Mexico Geological Society 60th Field Conference Guidebook: 267–280

Lojka, R. & Drábková, J. & Zajíc, J. & Sýkorová, I. & Franců, J. & Bláhová, A. & Grygar, T. (2009)
Climate variability in the Stephanian B based on environmental record of the Mšec Lake deposits (Kladno-Rakovník Basin, Czech Republic). Palaeogeography, Palaeoclimatology, Palaeoecology, 280(1–2), 78–93
DOI: 10.1016/j.palaeo.2009.06.001

Fischer, J. & Schneider, J.W. & Ronchi, A. (2010)
New hybondontoid shark from the Permocarboniferous (Gzhelian-Asselian) of Guardia Pisano (Sardinia, Italy). Acta Palaeontologica Polonica, 55(2), 241–264
DOI: 10.4202/app.2009.0019

Zajíc, J. & Vašíček, Z. (2010)
Chapter 7.2.1. Upper Carboniferous, Pennsylvanian In Cháb J., Breiter K., Fatka O., Hladil J., Kalvoda J., Šimůnek Z., Štorch P., Vašíček Z., Zajíc J. & Zapletal J.(2010): Outline of the Geology of the Bohemian Massif: the Basement Rocks and their Carboniferous and Permian Cover: 183–185

Johnson, G.D. (2012)
Sharks from the geraldine bonebed, lower permian of Texas [Abstract]. Journal of Vertebrate Paleontology, 32(Suppl. 1), 118
DOI: 10.1080/02724634.2012.10635175

Khonsari, R.H. & Seppala, M. & Pradel, A. & Dutel, H. & Clément, G. & Lebedev, O. & Ghafoor, S. & Rothova, M. & Tucker, A. & Maisey, J.G. & Fan, C.-M. & Kawasaki, M. & Ohazama, A. & Tafforeau, P. & Franco, B. & Helms, J. & Haycraft, C.J. & David, A. & Janvier, P. & Cobourne, M.T. & Sharpe, P.T. (2013)
The buccohypophyseal canal is an ancestral vertebrate trait maintained by modulation in sonic hedgehog signaling. BMC Biology, 11, Article 27
DOI: 10.1186/1741-7007-11-27

Opluštil, S. & Šimůnek, Z. & Zajíc, J. & Mencl, V. (2013)
Climatic and biotic changes around the Carboniferous/Permian boundary recorded in the continental basins of the Czech Republic. International Journal of Coal Geology, 119, 114–151
DOI: 10.1016/j.coal.2013.07.014

Davis, K. (2014)
Lower Permian Freshwater Sharks and Fishes of Texas and Oklahoma. published by the author himself, 118pp

Hodnett, J.-P.M. & Lucas, S.G. (2015)
Paleozoic fishes of New Mexico: a review. New Mexico Museum of Natural History and Science, Bulletin, 68, 51–64

Cuny, G. & Guinot, G. & Enault, S. (2017)
2 - Paleozoic Sharks In Evolution of Dental Tissues and Paleobiology in Selachians, ISTE Press Ltd. Published by Elsevier Ltd.: 19-32
DOI: 10.1016/B978-1-78548-139-0.50002-X

Hodnett, J.-P.M. & Lucas, S.G. (2017)
Paleoichthyological assemblages of the Upper Carboniferous-Lower Permian of Socorro County, New Mexico. New Mexico Museum of Natural History and Science, Bulletin, 77, 133–138

Maisey, J.G. & Denton, J.S.S. & Burrow, C. & Pradel, A. (2020)
Architectural and ultrastructural features of tessellated calcified cartilage in modern and extinct chondrichthyan fishes. Journal of Fish Biology, 98(4), 919–941
DOI: 10.1111/jfb.14376

Hodnett, J.-P.M. & Lucas, S.G. (2021)
Review of the Late Pennsylvanian Fish Assemblage from the Kinney Brick Quarry, New Mexico. New Mexico Museum of Natural History and Science, Bulletin, 84, 359–390

Luccisano, V. & Cuny, G. & Pradel, A. & Fourel, F. & Lécuyer, C. & Pouillon, J.-M. & Lachat, K. & Amiot, R. (2023)
Palaeoenvironmental and palaeoecological reconstructions based on oxygen, carbon and sulfur isotopes of Early Permian shark spines from the French Massif central. Palaeogeography, Palaeoclimatology, Palaeoecology, 628, Article 111760
DOI: 10.1016/j.palaeo.2023.111760

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, in press
DOI: 10.1017/pab.2024.1