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The Triassic isopod Protamphisopus wianamattensis (Chilton) and comparison by extant taxa (Crustacea, Phreatoicidea)

Published online by Cambridge University Press:  20 May 2016

George D. F. Wilson  and
Gregory D. Edgecombe
George D. F. Wilson
Affiliation:
Australian Museum, 6 College Street, Sydney, NSW 2010, Australia
Gregory D. Edgecombe
Affiliation:
Australian Museum, 6 College Street, Sydney, NSW 2010, Australia
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Abstract

Protamphisopus wianamattensis (Chilton, 1918) from the Middle Triassic (Anisian) Ashfield Shale in the Sydney Basin, Australia, is the earliest-known freshwater representative of the basal isopod suborder Phreatoicidea. In contrast, the late Paleozoic Palaeophreatoicidae species, which are morphologically distinct from extant families, are found in marine or estuarine facies. Comparison of Protamphisopus wianamattensis with living Phreatoicidea permits the external morphology of the fossils to be reconstructed and the species to be coded for cladistic analysis using a revised and expanded character set developed for living phreatoicideans. In resulting parsimonious trees as well as immediately suboptimal trees, Protamphisopus is nested within clades related to the family Amphisopodidae. Although not included in the analysis, the Late Permian Protamphisopus reichelti Malzahn (in Glaessner and Malzahn, 1962) appears to be a member of the Palaeophreatoicidae, rather than among the crown group of the Phreatoicidea. Therefore, a minimum age of Middle Triassic can be assigned to the basal branches within the phreatoicid crown group. The minimum age for the colonisation of fresh water by the suborder is also established although, given the advanced position of Protamphisopus wianamattensis in the cladograms, the habitat shift may have occurred earlier. The biogeographic distribution of extant Phreatoicidea on fragments of Gondwana is consistent with early Mesozoic origins for the major clades of this isopod suborder.

Type
Research Article
Information
Journal of Paleontology , Volume 77 , Issue 3 , May 2003 , pp. 454 - 470
Copyright
Copyright © The Paleontological Society

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References

Barnard, K. H. 1927. A study of the freshwater isopodan and amphipodan Crustacea of South Africa. Transactions of the Royal Society of South Africa, 14:139–215.CrossRefGoogle Scholar
Birstein, Y. A. 1962. Palaeophreatoicus sojanensis gen. et sp. nov. and some problems of phylogeny and distribution of Isopoda. Paleontologicheskii Zhurnal, 3:65–80. (In Russian)Google Scholar
Bremer, K. 1994. Branch support and tree stability. Cladistics, 10:295–304.CrossRefGoogle Scholar
Brusca, R. C., and Wilson, G. D. F. 1991. A phylogenetic analysis of the Isopoda with some classificatory recommendations. In Davie, P. J. F. and Quinn, R. H. (eds.), Proceedings of the 1990 International Crustacea Conference. Memoirs of the Queensland Museum, 31:143–204.Google Scholar
Calman, W. T. 1918. Notice of Memoirs. A Triassic Isopod Crustacean from Australia. Geological Magazine, Decade 6, 5:277–280.Google Scholar
Chilton, C. 1918. A fossil isopod belonging to the fresh-water genus Phreatoicus . Journal of Proceedings of the Royal Society of New South Wales, 51:365–388.Google Scholar
Chopra, B., and Tiwari, K. K. 1950. On a new genus of phreatoicid isopod from wells in Banaras. Records of the Indian Museum (Calcutta), 47:277–289.Google Scholar
Glaessner, M. F., and Malzahn, E. 1962. Neue Crustaceen aus dem niederrheinischen Zechstein. Fortschritt in der Geologie von Rheinland und Westfalen, 6:245–264.Google Scholar
Glauert, F. G. S. 1924. Contributions to the fauna of Western Australia, No. 4. A freshwater isopod Phreatoicus palustris n.sp. Journal of the Royal Society of Western Australia, 10:9–57.Google Scholar
Helby, R. 1973. Review of Late Permian and Triassic palynology of New South Wales, p. 141–155. In Glover, J. E. and Playford, G. (eds.), Mesozoic and Cainozoic Palynology: Essays in Honour of Isabel Cookson. Geological Society of Australia, Special Publication 4.Google Scholar
Herbert, C. 1980. Wianamatta Group and Mittagong Formation, p. 255–272. In Herbert, C. and Helby, R. (eds.), A Guide to the Sydney Basin. Geological Survey of New South Wales, Bulletin, 26.Google Scholar
Herbert, C. 1997. Sequence stratigraphic analysis of Early and Middle Triassic alluvial and estuarine facies in the Sydney Basin, Australia. Australian Journal of Earth Sciences, 44:125–143.CrossRefGoogle Scholar
Hessler, R. R. 1969. Peracarida, p. R360–R393. In Moore, R. C. (ed.), Treatise on Invertebrate Paleontology, Pt. R, Arthropoda 4: Crustacea (except Ostracoda). Volume 1. Geological Society of America, University of Kansas Press, Boulder, Lawrence, 398 p.Google Scholar
Knott, B., and Halse, S. 1999. Pilbarophreatoicus platyarthricus n. gen., n.sp. (Isopoda: Phreatoicidea: Amphisopodidae). Records of the Australian Museum, 51:33–42.CrossRefGoogle Scholar
Latreille, P. A. 1802. Histoire naturelle générale et particulière des Crustacés et Insectes, Volume 3. F. Dufart, Paris, 467 p.Google Scholar
Lawver, L. A., Gahagan, L. M., and Coffin, M. F. 1992. The development of paleoseaways around Antarctica. Antarctic Research Series, 56:7–30.Google Scholar
Lovering, J. F., and McElroy, C. T. 1969. Wianamatta Group, p. 417–422. In Packham, G. H. (ed.), The Geology of New South Wales. Journal of the Geological Society of Australia, 16:1–654.Google Scholar
Maddison, D. R., and Maddison, W. P. 2000. MacClade. Analysis of Phylogeny and Character Evolution. Version 4. Sinauer Associates, Sunderland, Massachusetts.Google Scholar
Müller, R. D., Gaina, C., and Clarke, S. 2000. Seafloor spreading around Australia, p. 18–28. In Veevers, J. J. (ed.), Billion-year Earth History of Australia and Neighbours in Gondwanaland. GMOC Press, Sydney.Google Scholar
Nicholls, G. E. 1926. A description of two genera and species of Phreatoicidea, with a discussion of the affinities of the members of this family. Journal of the Royal Society of Western Australia, 12(19):179–210, pls. 25–28.Google Scholar
Nicholls, G. E. 1943. The Phreatoicoidea, Pt. I, The Amphisopidae. Papers and Proceedings of the Royal Society of Tasmania, 1942:1–145.Google Scholar
Nicholls, G. E. 1944. The Phreatoicoidea, Pt. II, The Phreatoicidae. Papers and Proceedings of the Royal Society of Tasmania, 1943:1–156.Google Scholar
Palmer, A. R., and Geissman, J. 1999. 1999 Geologic Time Scale. Geological Society of America.Google Scholar
Sayce, O. A. 1902. A new genus of Phreatoicidae. Proceeding of the Royal Society of Victoria 14:218–224.Google Scholar
Schlotheim, E. F. 1820. Nachträge zur Petrefactenkunde, I. Becker'schen Buchhandlung, Gotha, 41 p.Google Scholar
Schram, F. R. 1970. Isopods from the Pennsylvanian of Illinois. Science, 169:854–855.CrossRefGoogle ScholarPubMed
Schram, F. R. 1974. Paleozoic Peracarida of North America. Fieldiana Geology, 33:95–124.Google Scholar
Schram, F. R. 1979. The Mazon Creek Biotas in the Context of a Carboniferous Faunal Continuum, p. 159–190. In Nitecki, M. H. (ed.), Mazon Creek Fossils. Academic Press, New York.CrossRefGoogle Scholar
Schram, F. R. 1980. Miscellaneous late Paleozoic Malacostraca of the Soviet Union. Journal of Paleontology, 54:542–547.Google Scholar
Schram, F. R. 1986. Crustacea. Oxford University Press, New York, Oxford, 606 p.Google Scholar
Sheppard, E. M. 1927. Revision of the family Phreatoicidae (Crustacea), with a description of two new species. Proceedings of the Zoological Society of London, 1927:81–124.Google Scholar
Spencer, B., and Hall, T. S. 1897. Description of a new genus of terrestrial Isopoda, allied to the genus Phreatoicus . Proceedings of the Royal Society of Victoria, 9:12–21.Google Scholar
Stebbing, T. R. R. 1893. A History of Crustacea—Recent Malacostraca. The International Scientific Series, no. 74. Kegan Paul, Trench, Trübner & Co. Ltd., London, 466 p.CrossRefGoogle Scholar
Swofford, D. L. 2002. PAUP∗. Phylogenetic Analysis Using Parsimony (∗ and Other Methods). Version 4b10. Sinauer Associates, Sunderland, Massachusetts.Google Scholar
Tillyard, R. J. 1916. Mesozoic and Tertiary Insects of Queensland and New South Wales: Descriptions of the Fossil Insects. Queensland Geological Survey, Publication 253:11–60.Google Scholar
Veevers, J. J. 2000. Permian-Triassic Pangean basins and foldbelts along the Panthallassan margin of Gondwanaland, p. 292–308. In Veevers, J. J. (ed.), Billion-year Earth History of Australia and Neighbours in Gondwanaland. GMOC Press, Sydney.Google Scholar
Wade, R. T. 1941. Australian Triassic fishes. Journal of the Royal Society of New South Wales, 74:377–396.Google Scholar
Wägele, J.-W. 1989. Evolution und phylogenetisches System der Isopoda. Stand der Forschung und neue Erkenntnisse. Zoologica, 140:1–262.Google Scholar
Watson, D. M. S. 1958. A new labyrinthodont (Paracyclotosaurus) from the Upper Trias of New South Wales. Bulletin of the British Museum (Natural History), Geology Series, 3:233–263.Google Scholar
Wilson, G. D. F., and Johnson, R. T. 1999. Ancient endemism among freshwater isopods (Crustacea, Phreatoicidea), p. 264–268. In Ponder, W. and Lunney, D. (eds.), The Other 99%. The Conservation and Biodiversity of Invertebrates. Transactions of the Royal Society of New South Wales, Mosman.CrossRefGoogle Scholar
Wilson, G. D. F., and Keable, S. J. 1999. A new genus of phreatoicidean isopod (Crustacea) from the north Kimberley region, Western Australia. Zoological Journal of the Linnean Society, 126:51–79.CrossRefGoogle Scholar
Wilson, G. D. F., and Keable, S. J. 2001. Systematics of the Phreatoicidea, p. 175–194. In Kensley, B. F. and Brusca, R. C. (eds.), Isopod Systematics and Evolution. Crustacean Issues, 13. A.A. Balkema, Rotterdam.Google Scholar
Wilson, G. D. F., and Keable, S. J. 2002a. New genera of Phreatoicidea (Isopoda, Crustacea) from Western Australia. Records of the Australian Museum, 54:41–70.CrossRefGoogle Scholar
Wilson, G. D. F., and Keable, S. J. 2002b. New Phreatoicidea (Crustacea, Isopoda) from Grampians National Park, with revisions of Synamphisopus and Phreatoicopsis . Memoirs of Museum Victoria, 59:457–529.CrossRefGoogle Scholar
Woodward, A. S. 1908. Fossil fishes of the Hawkesbury Series at St. Peters. Memoirs of the Geological Survey of New South Wales, 10:1–22.Google Scholar