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A new Tolypelepidid (Agnatha, Heterostraci) from the Late Silurian of Poland

Published online by Cambridge University Press:  09 November 2015

Marek Dec
Marek Dec*
Affiliation:
Institute of Paleobiology, Polish Academy of Sciences, Twarda 51/55, 00-818, Warsaw, Poland 〈mdec@twarda.pan.pl〉
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Abstract

Tolypelepis mielnikensis n. sp. from a core sample of the Late Silurian (Pridoli) succession in Mielnik, Poland shares tolypelepidid features such as a subdivision of the dorsal shield into epitega, and ornamentation of short dentine ridges grouped into scale-like units with a coarser, higher median ridge encircled by narrower and lower ridges. A constriction of the dorsal shield anterior to the orbit level with the orbital notches significantly deeper than in other tolypelepidids discriminates it from other Tolypelepis species.

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Articles
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Journal of Paleontology , Volume 89 , Issue 4 , July 2015 , pp. 637 - 644
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Copyright © 2015, The Paleontological Society 

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References

Berg, L.S., 1937, A classification of fish-like vertebrates: Bulletin of the Academy of Sciences of URSS: Biology Series, v. 4, p. 1277–1280.Google Scholar
Blieck, A., Elliott, D.K., and Gagnier, P.Y., 1991, Some questions concerning the phylogenetic relationships of heterostracans, Ordovician to Devonian jawless vertebrates, in Chang, M.M., Liu, Y.H., and Zhang, G.R., eds., Early Vertebrates and Related Problems of Evolutionary Biology: Beijing, Science Press, p. 1–17.Google Scholar
Denison, R.H., 1964, The Cyathaspididae: a family of Silurian and Devonian jawless vertebrates: Fieldiana Geology, v. 13, p. 30–473.Google Scholar
Dineley, D.L., and Loeffler, E.J., 1976, Ostracoderm faunas of the Delorme and associated Siluro-Devonian formations, North West Territories, Canada: Special Papers in Palaeontology, v. 18, p. 1–214.Google Scholar
Elliott, D.K., and Blieck, A., 2010, A new Ctenaspis (Agnatha, Heterostraci) from the Early Devonian of Nevada, with comments on paleobiology and biogeographic significance, in Elliott, D.K., Maisey, J.G., Yu, X., and Miao, D., eds., Morphology, Phylogeny, and Paleobiology of Fossil Fishes: Munchen, Verlag Dr. F. Pfeil, p. 25–38.Google Scholar
Elliott, D.K., and Swift, S., 2010, A New species of Ariaspis (Agnatha, Heterostraci) from the Late Silurian of the Canadian Arctic: Journal of Vertebrate Paleontology, v. 30, p. 1874–1878.CrossRefGoogle Scholar
Goodrich, E.S., 1909, Vertebrata craniata. First fascicle: cyclostomes and fisches, in A Treatese on Zoology, London, v. 9.CrossRefGoogle Scholar
Greeniaus, J.W., and Wilson, M.V.H., 2003, Fossil juvenile Cyathaspididae (Heterostraci) reveal rapid cyclomorial development of the dermal skeleton: Journal of Vertebrate Paleontology, v. 23, p. 483–487.CrossRefGoogle Scholar
Hoppe, K.H., 1931, Die Coelolepiden und Acanthodier des Obersilurs der Indel Ösel: Palaeontographia, v. 76, p. 35–94.Google Scholar
Janvier, P., 1996. Early Vertebrates: Oxford, Oxford Science Publications, Clarendon Press, 393 pp.CrossRefGoogle Scholar
Kiaer, J., 1932, The Downtonian and Devonian vertebrates of Spitsbergen. IV: Suborder Cyathaspida: Skrifter Svalbard Ishavet, v. 52, p. 7–26.Google Scholar
Kozłowski, W., and Sobień, K., 2012, Mid-Ludfordian coeval carbon isotope, natural gamma ray and magnetic susceptibility excursions in the Mielnik IG-1 borehole (Eastern Poland)—Dustiness as a possible link between global climate and the Silurian carbon isotope record: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 339–341, p. 74–97.CrossRefGoogle Scholar
Lankester, E.R., 1868, A monograph of the fishes of the Old Red Sandsone o Britain. Part I. The Cephalaspidiae: Monograph of the Palaeontographical Society, London, p. 1–62.Google Scholar
Loeffler, E.J., and Jones, B., 1977, Additional Late Silurian Ostracoderms from the Leopold Formation of Somerset Island North West Territories, Canada: Palaeontology, v. 20, p. 661–674.Google Scholar
Mark-Kurik, E., 1969, Distribution of vertebrates in the Silurian of Etonia: Lethaia, v. 2, p. 145–152.CrossRefGoogle Scholar
Mark-Kurik, E., and Noppel, T., 1970, Additional notes on the distribution of vertebrates in the Silurian of Estonia, ENSV TA Toimetised. Keemia: Geoloogia, v. 19, p. 171–173.Google Scholar
Märss, T., 1977, Structure of Tolypelepis from the Baltic Upper Silurian: Eesti NSV Teaduste Akadeemia Toimetised, Keemia: Geoloogia, v. 26, p. 57–69.CrossRefGoogle Scholar
Märss, T., 1997, Vertebrates of the Přidoli and Silurian-Devonian boundary beds in Europe: Modern Geology, v. 21, p. 17–42.Google Scholar
Nestor, H., 1990, Locality 7: 4 Ohesaare cliff; pp. 175–178 in Kaljo, D., and Nestor, H., eds., Field meeting, Estonia 1990, an Excursion Guidebook: Tallinn, Institute of Geology, Estonian Academy of Sciences, p. 175–178.Google Scholar
Pander, C.H., 1856. Monographie der fossilen Fische des silurischen Systems der russisch-baltischen Gouvernements: St. Petersburg, 91 p.Google Scholar
Rohon, J.V., 1893, Die obersilurischen Fische von Oesel. II Theil: Selachii, Dipnoi, Ganoidei, Pteraspidae und Cephalaspidae, Mémoires de l'Académie Impériale des Sciences de St.-Petersbourg, v. 41, p. 1–124.Google Scholar
Scotese, C.R., 2001, Atlas of Earth History, vol 1, Paleogeography, Paleomap Project, Arlington, Texas, 52 pp. Available at www.scotese.com.Google Scholar
Schmidt 1893, Ueber neue silurische Fischfunde auf Oesel: Neues Jahrbuch für Mineralogie, Geologie und Paläontologie, v. 1, p. 99–101.Google Scholar
Soehn, K.L., and Wilson, M.H.V., 1990, A complete, articulated heterostracan from Wenlockian (Silurian) beds of the Delorme Group, Mackenzie Mountains, Northwest Territories, Canada: Journal of Vertebrate Paleontology, v. 10, p. 405–419.CrossRefGoogle Scholar
Stensiö, E.A., 1958, Les cyclostomes fossiles ou ostracodermes, in Grassé, P., Traite de Zoologie: Paris, Masson, p. 173–425.Google Scholar
Urbanek, A., 1997, Late Ludfordian and early Přidolí monograptids from the Polish Lowland: Palaeontologica Polonica, v. 56, p. 87–232.Google Scholar