The oldest fossil record of the megamouth shark from the late Eocene of Denmark and comments on the enigmatic megachasmid origin

• Języki publikacji: EN

Abstrakty

EN

The megamouth shark (Lamniformes: Megachasmidae) has sporadic occurrences both in the present-day oceans and in the fossil record. In this paper, we describe a new megachasmid, Megachasma alisonae sp. nov., on the basis of a morphologically distinct tooth collected from the Pyt Member of the late Eocene Søvind Marl Formation at Moesgård Strand in Denmark, that represents the geologically oldest known Megachasma. The tooth likely came from an individual that measured somewhere between 1.3 and 3.5 m long, and its morphology and chipped cusp tips suggest that it possibly fed on macro-zooplankton and small fishes that had hard skeletal components. Its occurrence in the mid-Priabonian Pyt Member at least suggests that the shark inhabited a relatively deep, open marine environment about 36 Ma ago. This Eocene specimen is significant because it illustrates the dental condition of early megachasmids, which is distinctively odontaspidid-like morphologically.

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 2016
• Tom: 61
• Numer: 4
• Opis fizyczny: p.839–845,fig.,ref.

Twórcy

Bibliografia

• Adnet, S., Cappetta, H., and Reynders, J. 2008. Contribution of Eocene sharks and rays from southern France to the history of deep-sea selachians. Acta Geologica Polonica 58: 261–264.
• Berg, L.S. 1958. System der Rezenten und Fossilen Fischartigen und Fische. 310 pp. Hochschulbücher für Biologie, Berlin.
• Berra, T.M. 1997. Some 20th century fish discoveries. Environmental Biology of Fishes 50: 1–12.
• Bonaparte, C.L. 1838. Selachorum tabula analytica. Nuovi Annali della Scienze Naturali, Bologna 1 (2): 195–214.
• Cappetta, H. 2012. Chondrichthyes. Mesozoic and Cenozoic Elasmobranchii: Teeth. In: H.-P. Schultze (ed.), Handbook of Paleoichthyology, Volume 3E, 1–512. Verlag Dr. Friedrich Pfeil, Munich.
• Castillo-Géniz, J.L., Torres-Ocampo, A.I., Shimada, K., Rigsby, C.K., and Nicholas, A.C. 2012. Juvenile megamouth shark, Megachasma pelagios, from off the Pacific coast of Mexico, and its significance to chondrichthyan biodiversity in Mexico. Ciencias Marinas 38: 467–474.
• Cohen, J.E., Pimm, S.L., Yodzis, P., and Saldana, J. 1993. Body sizes of animal predators and animal prey in food webs. Journal of Animal Ecology 62: 67–78.
• Compagno, L.J.V. 1977. Phyletic relationships of living sharks and rays. American Zoologist 17: 303–322.
• Compagno, L.J.V. 1990. Relationships of the megamouth shark, Megachasma pelagios (Lamniformes: Megachasmidae), with comments on its feeding habits. National Oceanic and Atmospheric Administration Technical Report, National Marine Fisheries Service 90: 357–379.
• Compagno, L.J.V. 2001. Sharks of the world: an annotated and illustrated catalogue of shark species known to date. Volume 2: Bullhead, mackerel and carpet sharks (Heterodontiformes, Lamniformes and Orectolobiformes). Food and Agriculture Organization Species Catalogue for Fishery Purposes 1 (2): 1–269.
• De Schutter, P. 2009. The presence of Megachasma (Chondrichthyes: Lamniformes) in the Neogene of Belgium, first occurrence in Europe. Geologica Belgica 12: 179–203.
• Gonzalez-Barba, G. and Thies, D. 2000. Asociaciones faunisticas de condrictios en el Cenozoico de la Peninsula de Baja California, Mexico. Profil 18: 1–4.
• Hay, O.P. 1902. Bibliography and catalogue of the fossil vertebrata of North America. Bulletin of the United States Geological Survey 179: 1–868.
• Heilmann-Clausen, C. and Van Simaeys, S. 2005. Dinoflagellate cysts from the Middle Eocene to ?lowermost Oligocene succession in the Kysing Research Borehole, Central Danish Basin. Palynology 29: 143–204.
• Heinicke, M.P., Naylor, G.J.P., and Hedges, S.B. 2009. Cartilaginous fishes (Chondrichthyes). In: S.B. Bedges and S. Kumar (eds.), The Timetree of Life, 320–327. Oxford University Press, Oxford.
• Huxley, T.H. 1880. On the application of the laws of evolution to the arrangement of the Vertebrata, and more particularly of the Mammalia. Proceedings of the Zoological Society of London 43: 649–661.
• Keupp, H. and Bellas, S. 2002. Miozan-Fossilien aus NW-Kreta. III. Die Beckenfazies. Fossilien 19: 34–40.
• King, C. 2016. A revised correlation of Tertiary rocks in the British Isles and adjacent areas of NW Europe (edited by A.S. Gale and T.L. Barry). Geological Society of London Special Report 27: 1–724.
• Lavenberg, R.J. and Seigel, J.A. 1985. The Pacific’s megamystery—megamouth. Terra 23 (4): 29–31.
• Maisey, J.G. 2012. What is an “elasmobranch”? The impact of palaeontology in understanding elasmobranch phylogeny and evolution. Journal of Fish Biology 80: 918–951.
• Martin, A.P., Pardini, A.T., Noble, L.R., and Jones, C.S. 2002. Conservation of a dinucleotide simple sequence repeat locus in sharks. Molecular Phylogenetics and Evolution 23:205–213.
• Naylor, G.J.P., Martin, A.P., Mattison, E.G., and Brown, W.M. 1997. Interrelationships of lamniform sharks: testing phylogenetic hypotheses with sequence data. In: T.D. Kocher and C.A. Stepien (eds.), Molecular Systematics of Fishes, 199–218. Academic Press, San Diego.
• Nelson, D.R., McKibben, J.N., Strong, W.R., Lowe, C.G., Sisneros, J.A., Schroeder, D.M., and Lavenberg, R.J. 1997. An acoustic tracking of a megamouth shark, Megachasma pelagios: a crepuscular vertical migrator. Environmental Biology of Fishes 49: 389–399.
• Purdy, R.W., Schneider, V.P., Applegate, S.P., McLellan, J.H., Meyer, R.L., and Slaughter, B.H. 2001. The Neogene sharks, rays, and bony fishes from Lee Creek Mine, Aurora, North Carolina. Smithsonian Contributions to Paleobiology 90: 71–202.
• Schwarzhans, W. 2007. Otoliths from casts from the Eocene Lillebælt Clay Formation of Trelde Næs near Fredericia (Denmark), with remarks on the diet of stomatopods. Neues Jahrbuch für Geologie und Paläontologie Abhandlungen 246: 69–81.
• Shimada, K. 2007. Mesozoic origin for megamouth shark (Lamniformes: Megachasmidae). Journal of Vertebrate Paleontology 27: 512–516.
• Shimada, K., Popov, E.V., Siversson, M., Welton, B.J., and Long, D.J. 2015. A new clade of putative plankton-feeding sharks from the Upper Cretaceous of Russia and the United States. Journal of Vertebrate Paleontology 35 (5): e981335.
• Shimada, K., Welton, B.J., and Long, D.J. 2014. A new fossil megamouth shark (Lamniformes: Megachasmidae) from the Oligocene–Miocene of the western United States. Journal of Vertebrate Paleontology 34: 281–290.
• Shirai, S. 1996. Phylogenetic interrelationships of neoselachians (Chondrichthyes: Euselachii). In: M.L.J. Stiassny, L.R. Parenti, and G.D. Johnson (eds.), Interrelationships of Fishes, 9–34. Academic Press, San Diego.
• Smith, A.G., Smith, D.G., and Funnell, B.M. 1994. Atlas of Mesozoic and Cenozoic Coastlines. 99 pp. Cambridge University Press, Cambridge.
• Spadini, V. and Manganelli, G. 2015. A megachasmid shark tooth (Chondrichthyes, Lamniformes) from the Zanclean (early Pliocene) of San Quirico d’Orcia, central Italy. Bollettino della Società Paleontologica Italiana 54: 67–70.
• Taylor, L.R., Compagno, L.J.V., and Struhsaker, P.J. 1983. Megamouth—a new species, genus, and family of lamnoid shark (Megachasma pelagios, Family Megachasmidae) from the Hawaiian Islands. Proceedings of the California Academy of Science 43: 87–110.
• Thomsen, E., Abrahamsen, N., Heilmann-Clausen, C., King, C., and Nielsen, O.B. 2012. Middle Eocene to earliest Oligocene development in the eastern North Sea Basin: biostratigraphy, magnetostratigraphy and palaeoenvironment of the Kysing-4 borehole, Denmark. Palaeogeography, Palaeoclimatology, Palaeoecology 350–352: 212–235.
• Tomita, T. and Yokoyama, K. 2015. The first Cenozoic record of a fossil megamouth shark (Lamniformes, Megachasmidae) from Asia. Paleontological Research 19: 204–207.
• Ward, D.J. 1981. A simple machine for bulk processing of clays and silts. Tertiary Research 3: 121–124.
• Whitenack, L.B. and Motta P.J. 2010. Performance of shark teeth during puncture and draw: implications for the mechanics of cutting. Biological Journal of the Linnean Society 100: 271–286.
• Yabumoto, Y., Goto, M., and Uyeno, T. 1997. Dentition of a female megamouth, Megachasma pelagios, collected from Hakata Bay, Japan. In: K. Yano, J.F. Morrissey, Y. Yabumoto, and K. Nakaya (eds.), Biology of Megamouth Shark, 63–75. Tokai University Press, Tokyo.

Identyfikatory

DOI

10.4202/app.00248.2016