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First fossils of the isopod genus Aega Leach, 1815

Published online by Cambridge University Press:  14 July 2015

Thomas Hansen  and
Jesper Hansen
Thomas Hansen
Affiliation:
Department of Geography and Geology, University of Copenhagen, ⊘ster Voldgade 10, DK–1350 K⊘benhavn K, Denmark,
Jesper Hansen
Affiliation:
Department of Natural Sciences, Troms⊘ University Museum, NO-9037 Troms⊘, Norway,
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Abstract

Two abdominal molts representing a small cymothoid isopod are described from the marine late Miocene Gram Formation of southern Denmark. Abdominal molts are generally regarded as being difficult or even impossible to assign to genus or family due to overlap of morphological characters. A preliminary study supported by statistical and multivariate analysis of the genera most closely resembling the specimens reveals that although some overlap in characters do occur, the genera can to a large extent be defined by a diagnostic set of features. The Danish Miocene taxon described herein is assigned to Aega Leach, 1815 as the only known fossil of this important cosmopolitan genus.

Type
Paleontological Notes
Information
Journal of Paleontology , Volume 84 , Issue 1 , January 2010 , pp. 141 - 147
Copyright
Copyright © The Paleontological Society 

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References

Barnard, K. H. 1940. Contributions to the crustacean fauna of South Africa. 12. Further additions to the Tanaidacea, Isopoda and Amphipoda, together with keys for the identification of hitherto recorded marine and fresh-water species. Annals of the South African Museum, 32:381–543.Google Scholar
Barnard, K. H. 1955. Additions to the fauna list of South African Crustacea and Pycnogonida. Annals of the South African Museum, 43(1):1–107.Google Scholar
Bleeker, P. 1857. Recherches sur les Crustaces de l'Inde Archipelagique II. Sur les Isopodes cymothoadiens del Archipel Indien. Batavia, Verhandelingen van het Natuurkunde Vereeniging, 2(5):20–40.Google Scholar
Brandt, A. and Andres, H. G. 2008. Description of Aega sarsae sp. nov. and redescription of Syscenus atlanticus Kononenko, 1988 (Crustacea, Isopoda, Aegidae) from the Mid-Atlantic Ridge. Marine Biology Research, 4:61–75.Google Scholar
Brandt, A. and Poore, G. C. B. 2003. Higher classification of flabelliferan and related Isopoda based on a reappraisal of relationships. Invertebrate Systematics, 17:893–923.Google Scholar
Bruce, N. L. 1980. The Cirolanidae (Crustacea: Isopoda) of Australia: the Coral Sea. Cahiers de l'Indo-Pacifique, 2:155–173.Google Scholar
Bruce, N. L. 1981. The Cirolanidae (Crustacea: Isopoda) of Australia: new species and a new genus from southeastern Australia. Records of the Australian Museum, 33(13):644–672.Google Scholar
Bruce, N. L. 1986. Cirolanidae (Crustacea: Isopoda) of Australia. Records of the Australian Museum, Supplement 6:1–239.Google Scholar
Bruce, N. L. 1987. Australian species of Nerocila Leach, 1818, and Creniola n. gen. (Isopoda: Cymothoidae), crustacean parasites of marine fishes. Record of the Australian Museum, 39:355–412.Google Scholar
Bruce, N. L. 1996. Aega komai, a new species of marine isopod crustacean (Aegidae: Flabellifera) from Japan. Crustacean Research, 25:129–136.Google Scholar
Bruce, N. L. 2004. Reassessment of the isopod crustacean Aega deshaysiana (Milne Edwards, 1840) (Cymothoida: Aegidae): a worldwide complex of 21 species. Zoological Journal of the Linnean Society, 142(2):135–232.Google Scholar
Brusca, R. C. 1983. A monograph on the Isopod Family Aegidae in the Tropical Eastern Pacific - I. The Genus Aega. Allan Hancock Monographs in Marine Biology No. 12. Allan Hancock Foundation, California. 39 p.Google Scholar
Brusca, R. C. and Iverson, E. W. 1985. A Guide to the Marine Isopod Crustacea of Pacific Costa Rica. Revista de Biologia Tropical 33, Supplement 1:1–77.Google Scholar
Bunkley-Williams, L. and Williams, E. H. 1999. Nerocila benrosei n. sp. (Isopoda: Cymothoidae), an external parasite of hogfishes from Northern Bahamas. Journal of Parasitology, 85(6):1036–1040.Google Scholar
Dana, J. D. 1853. Crustacea. Part II. In Wilkes, C., United States Exploring Expedition, 1838–1842 under the command of Charles Wilkes, 14. Philadelphia. 1618 p.Google Scholar
Edwards, H. M. 1840. Histoire Naturelle des Crustaces, comprenant l'anatomie, la physiologie et la classification de ces animaux, vol 3. Roret, Paris.Google Scholar
Feldmann, R. M. and Rust, S. 2006. Palaega kakatahi n. sp.: the first record of a marine fossil isopod from the Pliocene of New Zealand. New Zealand Journal of Geology and Geophysics, 49:411–415.Google Scholar
Feldmann, R. M., Schweitzer, C. E., Maxwell, P. A., and Kelley, B. M. 2008. Fossil isopod and decapod crustaceans from the Kowai Formation (Pliocene) near Makikihi, South Canterbury, New Zealand. New Zealand Journal of Geology and Geophysics, 51:43–58.Google Scholar
Grant-Mackie, J. A., Buckeridge, J. S., and Johns, P. M. 1996. Two new Upper Jurassic arthropods from New Zealand. Alcheringa, 20:31–39.Google Scholar
Guerin-Meneville, F. E. 1832. Crustaces. In Expedition scientifique de Moree (sous la direction de M. Bory de Saint-Vincent). Volume 3. Paris.Google Scholar
Hale, H. M. 1924. The flora and fauna of Nuyts Archipelago and the Investigator Group. No. 16. The Crustacea. Transactions of the Royal Society of South Australia, 48:67–73.Google Scholar
Hale, H. M. 1925. Review of Australian isopods of the cymothoid group. Part 1. Transactions of the Royal Society of South Australia, 49:128–185.Google Scholar
Hale, H. M. 1940. Report on the cymothoid Isopoda obtained by F.I.S. Endeavor on the coasts of Queensland, New South Wales, Victoria, Tasmania, and South Australia. Transactions of the Royal Society of South Australia, 64:288–304.Google Scholar
Hammer, Ø. and Harper, D. A. T. 2006. Paleontological Data Analysis. Blackwell Publishing, Malden, MA. 351 p.Google Scholar
Hammer, Ø., Harper, D. A. T., and Ryan, P. D. 2001. PAST: Paleontological Statistics Software Package for Education and Data Analysis. Palaeontologia Electronica 4(1). 9 p.Google Scholar
Hansen, H. J. 1895. Ordnung: Isopoda. In Isopoden, Cumaceen und Stomatopoden der Plankton Expedition. Ergebnisse der Plankton-Expedition der Humboldt-Stiftung, 2:1–48.Google Scholar
Hansen, H. J. 1897. Reports on the dredging operations off the west coast of Central America to the Galapagos, to the west coast of Mexico, and in the Gulf of California, in charge of Alexander Agassiz, carried on by the U.S. Fish Commission Steamer Albatross, during 1891, Lt. Commander Z. L. Tanner, U.S.N., commanding. Bulletin of the Museum of Comparative Zoology, Harvard, 31(5):95–129.Google Scholar
Hansen, H. J. 1905. Revision of the European forms of the Cirolaninae, a subfamily of Crustacea, Isopoda. Journal of the Linnean Society, Zoology, 29:337–373.Google Scholar
Hansen, J. and Hansen, T. 2003. Stratigraphy and sea-level fluctuations in the Upper Miocene Gram Formation, southwestern Denmark. Bulletin of the Geological Society of Denmark, 50:157–169.Google Scholar
Harger, O. 1873. [ Erichsonia attenuata , Page 276] In Verrill, A. E., Smith, S. I., and Harger, O., Catalogue of the Marine Invertebrate animals of the southern coast of New England, and adjacent waters. In Verrill, A. E. and Smith, S. I. (eds), Report upon the invertebrate animals of Vineyard Sound and adjacent waters, with an account of the physical features of the region. In Baird, S. F., Report of Professor S. F. Baird, Commissioner of Fish and Fisheries, on the condition of the sea-fisheries of the south coast of New England in 1871 and 1872. Washington, D.C.; Government Printing Office.Google Scholar
Harger, O. 1883. Reports on the results of dredging, under the supervision of Alexander Agassiz, on the east coast of the United States, during the summer of 1880, by the U.S. Coast Survey Steamer Blake, Commander J. R. Bartlett, U.S.N., commanding. Bulletin of the Museum of Comparative Zoology at Harvard College, 11(4):91–104.Google Scholar
Hessler, R. 1969. Peracarida. p. R360–R393. In Moore, R. C. (ed.) Treatise on Invertebrate Paleontology, Pt. R, Arthropoda 4. Geological Society of America and University Kansas Press.Google Scholar
Hoek, P. P. C. 1882. Die Crustaceen gesammelt waehrend der Fahrten des ‘Willem Barents’. Niederlandisches Archiv für Zoologie Supplement, 1(3):1–75.Google Scholar
Holdich, D. M., Harrison, K., and Bruce, N. L. 1981. Cirolanid isopod crustaceans from the Townsville region of Queensland, Australia, with descriptions of six new species. Journal of Natural History 15(4):555–605.Google Scholar
Johnston, G. 1834. Illustrations in British Zoology. Magazine of Natural History, 7:230–235.Google Scholar
Keable, S. J. 2006. Taxonomic revision of Natatolana (Crustacea: Isopoda: Cirolanidae). Records of the Australian Museum 58(2):133–244.Google Scholar
Kensley, B. and Chan, T.-Y. 2001. Two species of deep-sea flabelliferan isopods from Taiwan (Crustacea: Peracarida: Aegidae, Anuropidae). Journal of Natural History, 35(4):481–496.Google Scholar
Kussakin, O. G. and Malyutina, M. V. 1979. Marine and brackish water isopod Crustacea. Suborder Flabellifera. Academy of Science, Leningrad, U.S.S.R., 470 p.Google Scholar
Latreille, P. A. 1817. Les crustacés, les arachnids et les insects, p. 1–653. In Cuvier, G., Le règne animal distribué d'apres son organization, pour server de base à l'histoire naturelle et l'introduction à l'anatomie compare (first edition). Vol. 3. D'éterville, Paris.Google Scholar
Leach, W. E. 1814. Crustaceology, p. 383–439. In Brewster, D. (ed.), Brewster's Edinburgh Encyclopedia. Vol. 7. Sir Brewster, Edinburgh.Google Scholar
Leach, W. E. 1815. A tabular view of the external characters of four classes of animals which Linné arranged under Insecta with the distribution of the genera composing three of these classes into Orders, and description of several new genera and species. Transactions of the Linnean Society of London, 11:306–400.Google Scholar
Leach, W. E. 1818. Cymothoadées. In Cuvier, F. (ed.), Dictionnaire des sciences naturelles, 12:338–354. Paris and Strasbourg.Google Scholar
Liljeborg, W. 1851. Norger Crustaceer. Öfversigt af Kongliga Vetenskapsakademiens Förhandligar, Stockholm, 8:19–25.Google Scholar
Linné, C. 1758. Systema Naturae per Regna Tria Naturae, Secundum Classes, Ordines, Genera, Species, cum characteribus differentiis, Synonymis, Locis. 10th Edition, 1, iii + 824 p. Holmiae.Google Scholar
Lockington, W. N. 1877. Description of seventeen new species of Crustacea. Proceedings of the California Academy of Sciences, 7:44–46.Google Scholar
Lütken, C. F. 1859. Nogle bemærkninger om de Nordiske Aega-arter samt om Aega-slægtens rette Begrændsning. Videnskabelige Meddelelser fra den Naturhistoriske Forening i Kj⊘benhavn, 65–78.Google Scholar
Menzies, R. J. 1962. The zoogeography, ecology, and systematics of the Chilean marine isopods. Lunds Universitets Årsskrift. Ny f⊘ljd, 57(11), 162 pp., 51 figs. Google Scholar
Miers, E. J. 1876. Descriptions of some new species of Crustacea, chiefly from New Zealand. Annals and Magazine of Natural History, 4(17):218–229.Google Scholar
Miers, E. J. 1880. On a collection of Crustacea from the Malaysian Region – Part IV. Penaeidea, Stomatopoda, Isopoda, Suctoria and Xiphosura. Annals and Magazine of Natural History, 5(5):457–467.Google Scholar
Miers, E. J. 1884. Crustacea, p. 178–322, pls 18–34. In Report on the zoological collections made in the Indo-Pacific during the voyage of H.M.S. Alert, 1881–1882. British Museum (Natural History), London.Google Scholar
Milne-Edwards, H. 1840. Histoire Naturelle des Crustacés, Comprenant l'Anatomie, la Physiologie et la Classification de ces Animaux. Librairie Encyclopédique de Roret, 3 (Atlas 32 pp., 42 pls):605. Paris.Google Scholar
Münster, G. 1840. Ueber einige Isopoden in den Kalkschiefern von Bayern. Beiträge zur Petrefactenkunde, 3:19–23.Google Scholar
Piasecki, S. 2005. Dinoflagellate cysts of the Middle – Upper Miocene Gram Formation, Denmark. In Roth, F. and Hoedemakers, K. (eds.), The marine Gram Formation at Gram, Denmark: Late Miocene Geology and Palaeontology. Palaeontos, 7:29–45.Google Scholar
Polz, H. 2005. Zwei neue Asselarten (Crustacea: Isopoda: Scutocoxifera) aus den Plattenkalken von Brunn (Oberkimmeridgium, Mittlere Frankenalb). Archaeopteryx, 23:67–81.Google Scholar
Popov, A. M. 1933. Contribution to the ichthyofauna of the Sea of Japan. Issledovaniia Morei SSSR, 19:139–155, Figs 1–5 [In Russian].Google Scholar
Poulsen, N. E., Laursen, G. V., and Rasmussen, L. B. 1995. Neogene and Quarternary dinoflagellate cyst, foraminiferal, and molluscan biostratigraphy and paleoclimatology and paleoenvironment of the Lille T⊘nde borehole, southern Jylland, Denmark. EFP–92 project: Basin development of the Tertiary of the Central Trough with emphasis on possible hydrocarbon reservoirs. Report No. 24. Department of Earth Sciences, Aarhus University and Geological Survey of Denmark, 34 p.Google Scholar
Rasmussen, E. S. 2005. The geology of the upper Middle–Upper Miocene Gram Formation in the Danish area. In Roth, F. and Hoedemakers, K. (eds.), The marine Gram Formation at Gram, Denmark: Late Miocene Geology and Palaeontology. Palaeontos, 7:5–18.Google Scholar
Rasmussen, E. S. and Larsen, O. H. 1989. Mineralogi og geokemi af det Øvre Miocæne Gram ler. Danmarks Geologiske Unders⊘gelse serie D (7):1–81.Google Scholar
Rasmussen, L. B. 1956. The Marine Upper Miocene of South Jutland and its Molluscan Fauna. Danmarks Geologiske Unders⊘gelse, II series, 81, 166 p., 10 pls.Google Scholar
Rasmussen, L. B. 1961. De miocæne formationer i Danmark. Danmarks Geologiske Unders⊘gelse, IV series, 4, 5, 45 p.Google Scholar
Rasmussen, L. B. 1963. Fiskerester, bryozoer og diverse andre organismer fra det yngre miocæn i Danmark. Palæontologisk Klubs m⊘der i året 1962. 19. marts. Meddelelser fra Dansk Geologisk Forening i K⊘benhavn, 15:273.Google Scholar
Rasmussen, L. B. 1966. Biostratigraphical studies on the marine younger Miocene of Denmark. Based on the molluscan faunas. Danmarks Geologiske Unders⊘gelse, II series, 88, 358 p.Google Scholar
Richardson, H. 1905. Isopods from the Alaska Salmon Investigation. Bulletin of the Bureau of Fisheries, 211–221.Google Scholar
Richardson, H. 1909. Isopods collected in the northwest Pacific by the U.S. Bureau of Fisheries steamer Albatross in 1906. Proceedings of the U.S. Natural Museum, 37:75–129, Figs 1–50.Google Scholar
Richardson, H. 1910. Marine isopods collected in the Philippines by the U.S. Fisheries steamer Albatross in 1907–08. Bureau of Fisheries Document, 736:1–44.Google Scholar
Richardson, H. 1914. Reports. Tropical Pacific Albatross 1899–1900, 17. Reports Eastern Tropical Pacific Albatross 1904–1905, 28. Isopoda. Bulletin of Museum of Comparative Zoology, Harvard College, 58:361–372.Google Scholar
Risso, A. 1816. Histoire naturelle des Crustacés des environs de Nice. Paris. 175 p.Google Scholar
Sars, G. O. 1899. An account of the Crustacea of Norway, with short descriptions and figures of all the species. Volumen 2, Isopoda. X + 270 p., 100 pls. Bergen Museum. Bergen.Google Scholar
Sars, M. 1859. Oversigt over de i den norsk-arctiske region forekommende Krebsdyr. Videnskabs-selskabet i Christiania, Forhandlinger år 1859, 122–163.Google Scholar
Schioedte, J. C. and Meinert, F. W. 1879. Symbolae ad Monographiam Cymothoarum Crustaceorum Isopodum Familiae 1. Aegidae. Naturhistorisk Tidsskrift, 3(12):321–414.Google Scholar
Schioedte, J. C. and Meinert, F. W. 1881. Symbolae ad Monographiam Cymothoarum Crustaceorum Isopodum Familiae 2. Anilocridae. Naturhistorisk Tidsskrift, 3(13):1–166.Google Scholar
Stebbing, T. R. R. 1900. On Crustacea brought by Dr. Willey from the South Seas. In Willey, A. (ed.), Zoological Results based on material from New Britain, New Guinea, Loyalty Islands and elsewhere collected during the years 1895, 1896, and 1897. Willey's Zoological Results, 5:605–690, pls 64–74.Google Scholar
Stephensen, K. 1948. Storkrebs IV. Ringkrebs, 3. Tanglus (Marine isopoder) og tanaider. Danmarks Fauna, 53:1–187. G.E.C. Gads Forlag, K⊘benhavn.Google Scholar
Stimpson, W. 1853. Synopsis of the marine Invertebrata of Grand Manan. Smithsonian Contributions to Knowledge, 6.1–66.Google Scholar
Tattersall, W. M. 1921. Crustacea. Pt. VI. Tanaidacea and Isopoda. British Antarctic (Terra Nova) Expedition, 1910. Natural History Report (Zoology) 3(8):191–258.Google Scholar
Yu, H. 2007. A new species of Aegidae (Isopod, Cymothoida) from the South China Sea. Crustaceana, 80(8):909–915.Google Scholar
Van Straelen, V. 1930. Présentation d'un Isopode de l'Yprésien du Jutland. Bulletin de la Sociéte Belge de Géologie de Paléontologie et d'Hydrologie, 39(1), 1929:86.Google Scholar
Waegele, J. W. 1989. Evolution und phylogenetisches System der Isopoda. Stand der Forschung und neue Erkenntnisse. Zoologica 140:1–262.Google Scholar
Wetzer, R. 1990. A new species of isopod, Aega (Rhamphion) francoisae (Flabellifera: Aegidae), from the cloaca of an ascidian from the Galápagos Islands. Proceedings of the Biological Society of Washington 103(3):655–662.Google Scholar
White, A. 1850. List of the Specimens of British Animals in the Collections of the British Museum. Part 2. Crustacea. British Museum: London.Google Scholar
Whitelegge, T. 1901. Scientific results of the trawling expedition of H.M.C.S. Thetis, off the coast of New South Wales. Crustacea, Pt. II. Isopoda. Part I. Memoirs of the Australian Museum, 4(3):201–246.Google Scholar
Wieder, R. W. and Feldmann, R. M. 1992. Mesozoic and Cenozoic fossil isopods of North America. Journal of Paleontology 66(6):958–972.Google Scholar
Yu, H.-Y. 2007. A new species of Aegidae (Isopoda, Cymothoida) from the South China Sea. Crustaceana 80(8):909–915.Google Scholar