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RETRACTED—Eldonioids with associated trace fossils from the lower Cambrian Emu Bay Shale Konservat-Lagerstätte of South Australia

Published online by Cambridge University Press:  04 December 2017

Natalie I. Schroeder ,
John R. Paterson  and
Glenn A. Brock
Natalie I. Schroeder
Affiliation:
Palaeoscience Research Centre, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia 〈nschroed@myune.edu.au〉, 〈jpater20@une.edu.au〉
John R. Paterson
Affiliation:
Palaeoscience Research Centre, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia 〈nschroed@myune.edu.au〉, 〈jpater20@une.edu.au〉
Glenn A. Brock
Affiliation:
Department of Biological Sciences, Macquarie University, Sydney, NSW 2109, Australia 〈glenn.brock@mq.edu.au〉
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Abstract

Rare specimens of eldonioids recovered from the lower Cambrian (Series 2, Stage 4) Emu Bay Shale (EBS) Konservat-Lagerstätte represent the first record of the group for the Cambrian of East Gondwana. The disc-shaped body of the EBS taxon bears fine concentric corrugations on the dorsal surface and, ventrally, a series of internal lobes that have primary and secondary bifurcations, as well as a coiled sac. It appears to be most similar to Rotadiscus and Pararotadiscus of the Cambrian Chengjiang and Kaili biotas of South China, respectively. While the structure of the internal lobes would indicate that this occurrence in the EBS represents a new taxon within the Rotadiscidae, lack of detail regarding the precise number of internal lobes and the condition of the circumoral tentacles warrants a more conservative approach in leaving the genus and species under open nomenclature. The EBS specimens also host trace fossils, including the remains of a burrow, which are generally lacking in the body-fossil-bearing layers of the Konservat-Lagerstätte interval. These traces appear to have been made by small organisms and are similar to traces associated with the discs of Pararotadiscus guizhouensis Zhao and Zhu, 1994 from the Kaili Biota. The available taphonomic, paleoenvironmental, and ichnological evidence indicates that the EBS eldonioids are most likely vagrants that were transported or settled into the ‘preservational trap’ and subsequently exposed on the substrate for a brief period before burial, thereby allowing organisms to exploit their carcasses for nutrients or other purposes.

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Journal of Paleontology , First View , pp. 1 - 7
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Copyright © 2017, The Paleontological Society 

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References

Alessandrello, A., and Bracchi, G., 2003, Eldonia berbera n. sp., a new species of the enigmatic genus Eldonia Walcott, 1911 from the Rawtheyan (Upper Ordovician) of Anti-Atlas (Erfoud, Tafilalt, Morocco): Atti della Societa italiana di scienze naturali e del museo civico di storia natural di Milano, v. 144, p. 337–358.Google Scholar
Babcock, L.E., and Peel, J.S., 2007, Palaeobiology, taphonomy and stratigraphic significance of the trilobite Buenellus from the Sirius Passet Biota, Cambrian of North Greenland: Memoirs of the Association of Australasian Palaeontologists, v. 34, p. 401–418.Google Scholar
Blaker, M.R., 1988, A new genus of nevadiid trilobite from the Buen Formation (early Cambrian) of Peary Land, central North Greenland: Grønlands Geologiske Undersøgelse Rapport, v. 137, p. 33–41.Google Scholar
Carbone, C., and Narbonne, G.M., 2014, When life got smart: The evolution of behavioral complexity through the Ediacaran and early Cambrian of NW Canada: Journal of Paleontology, v. 88, p. 309–330. doi: 10.1666/13-066.Google Scholar
Caron, J.-B., 2006, Banffia constricta, a putative vetulicolid from the middle Cambrian Burgess Shale: Transactions of the Royal Society of Edinburgh: Earth Sciences, v. 96, p. 95–111.Google Scholar
Caron, J.-B., Gaines, R.R., Mángano, M.G., Streng, M., and Daley, A.C., 2010a, A new Burgess Shale-type assemblage from the “thin” Stephen Formation of the southern Canadian Rockies: Geology, v. 38, p. 811–814.Google Scholar
Caron, J.-B., Conway Morris, S., and Shu, D., 2010b, Tentaculate fossils from the Cambrian of Canada (British Columbia) and China (Yunnan) interpreted as primitive deuterostomes: PLoS ONE, v. 5, e9586.Google Scholar
Chapman, F., 1926, New or little-known fossils in the National Museum. Part 30: A Silurian jelly-fish: Proceedings of the Royal Society of Victoria, v. 39, p. 13–17.Google Scholar
Chen, J.-Y., 2009, The sudden appearance of diverse animal body plans during the Cambrian explosion: The International Journal of Developmental Biology, v. 53, p. 733–751.Google Scholar
Chen, J.-Y., 2012, Evolutionary scenario of the early history of the animal kingdom: Evidence from Precambrian (Ediacaran) Weng’an and early Cambrian Maotianshan biotas, China, in Talent, J.A., ed., Earth and Life: Dordrecht, Netherlands, Springer, p. 239–379.Google Scholar
Chen, J.-Y., Zhu, M.Y., and Zhou, G.Q., 1995, The early Cambrian medusiform metazoan Eldonia from Chengjiang Lagerstätte: Acta Palaeontologica Polonica, v. 40, p. 213–244.Google Scholar
Chen, J.-Y., Huang, D.Y., and Chuang, S.H., 2007, Reinterpretation of the lower Cambrian brachiopod Heliomedusa orienta Sun and Hou, 1987a as a discinid: Journal of Paleontology, v. 81, p. 38–47.Google Scholar
Clarke, J.M., 1900, Paropsonema cryptophya—A peculiar echinoderm from the Intumescens-zone (Portage beds) of western New York: Bulletin of the New York State Museum, v. 39, p. 172–178.Google Scholar
Conway Morris, S., 1993a, Ediacaran-like fossils in Cambrian Burgess Shale-type faunas of North America: Paleontology, v. 36, p. 593–635.Google Scholar
Conway Morris, S., 1993b, The fossil record and the early evolution of the Metazoa: Nature, v. 361, p. 219–225.Google Scholar
Conway Morris, S., and Jenkins, R.J.F., 1985, Healed injuries in early Cambrian trilobites from South Australia: Alcheringa, v. 9, p. 167–177.Google Scholar
Conway Morris, S., and Robison, R.A., 1988, More soft-bodied animals and algae from the middle Cambrian of Utah and British Columbia: University of Kansas Paleontological Contributions, v. 122, p. 1–48.Google Scholar
Conway Morris, S., Selden, P.A., Gunther, G., Jamison, P.G., and Robison, R.A., 2015, New records of Burgess Shale-type taxa from the middle Cambrian of Utah: Journal of Paleontology, v. 89, p. 411–423.Google Scholar
Daley, A.C., Paterson, J.R., Edgecombe, G.D., García‐Bellido, D.C., and Jago, J.B., 2013, New anatomical information on Anomalocaris from the Cambrian Emu Bay Shale of South Australia and a reassessment of its inferred predatory habits: Palaeontology, v. 56, p. 971–990.Google Scholar
Durham, J.W., 1974, Systematic position of Eldonia ludwigi Walcott: Journal of Paleontology, v. 48, p. 750–755.Google Scholar
Dzik, J., 1991, Is fossil evidence consistent with traditional views of the early metazoan phylogeny? in Simonetta, A.M., and Conway Morris, S., eds., The Early Evolution of Metazoa and the Significance of Problematic Taxa: Cambridge, UK, Cambridge University Press, p. 47–56.Google Scholar
Dzik, J., Zhao, Y.L., and Zhu, M.Y., 1997, Mode of life of the middle Cambrian eldonioid lophophorate Rotadiscus : Palaeontology, v. 40, p. 385–396.Google Scholar
Friend, D., Zhuravlev, A.Y., and Solov’ev, I.A., 2002, Middle Cambrian Eldonia from the Siberian Platform: Paleontological Journal, v. 36, no. 1, p. 20–24.Google Scholar
Gaines, R.R., 2014, Burgess Shale-type preservation and its distribution in space and time: The Paleontological Society Papers, v. 20, p. 123–146.Google Scholar
García‐Bellido, D.C., Paterson, J.R., Edgecombe, G.D., Jago, J.B., Gehling, J.G., and Lee, M.S.Y., 2009, The bivalved arthropods Isoxys and Tuzoia with soft‐part preservation from the lower Cambrian Emu Bay Shale Lagerstätte (Kangaroo Island, Australia): Palaeontology, v. 52, p. 1221–1241.Google Scholar
García-Bellido, D.C., Paterson, J.R., and Edgecombe, G.D., 2013, Cambrian palaeoscolecids (Cycloneuralia) from Gondwana and reappraisal of species assigned to Palaeoscolex : Gondwana Research, v. 24, p. 780–795.Google Scholar
García-Bellido, D.C., Lee, M.S.Y., Edgecombe, G.D., Jago, J.B., Gehling, J.G., and Paterson, J.R., 2014, A new vetulicolian from Australia and its bearing on the chordate affinities of an enigmatic Cambrian group: BMC Evolutionary Biology, v. 14, p. 214.Google Scholar
Gehling, J.G., Jago, J.B., Paterson, J.R., García‐Bellido, D.C., and Edgecombe, G.D., 2011, The geological context of the lower Cambrian (Series 2) Emu Bay Shale Lagerstätte and adjacent stratigraphic units, Kangaroo Island, South Australia: Australian Journal of Earth Sciences, v. 58, p. 243–257.Google Scholar
Hall, A.P., McKirdy, D.M., Halverson, G.P., Jago, J.B., and Gehling, J.G., 2011, Biomarker and isotopic signatures of an early Cambrian Lagerstätte in the Stansbury Basin, South Australia: Organic Geochemistry, v. 42, p. 1324–1330.Google Scholar
Hall, J., 1847, Palaeontology of New York, v. Volume I: Albany, New York, C. Van Benthuysen.Google Scholar
Hu, S., Steiner, M., Zhu, M., Erdtmann, B.D., Luo, H., Chen, L., and Weber, B., 2007, Diverse pelagic predators from the Chengjiang Lagerstätte and the establishment of modern-style pelagic ecosystems in the early Cambrian: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 254, p. 307–316.Google Scholar
Ivantsov, A.Y., Zhuravlev, A.Y., Leguta, A.V., Krassilov, V.A., Melnikova, L.M., and Ushatinskaya, G.T., 2005, Palaeoecology of the early Cambrian Sinsk biota from the Siberian platform: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 220, p. 69–88.Google Scholar
Jin, Y., and Wang, H., 1992, Revision of the lower Cambrian brachiopod Heliomedusa Sun & Hou, 1987: Lethaia, v. 25, p. 35–49.Google Scholar
Lin, J.P., Zhao, Y.L., Rahman, I.A., Xiao, S., and Wang, Y., 2010, Bioturbation in Burgess Shale-type Lagerstätten—Case study of trace fossil–body fossil association from the Kaili Biota (Cambrian Series 3), Guizhou, China: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 292, p. 245–256.Google Scholar
MacGabhann, B.A., and Murray, J., 2010, Non-mineralised discoidal fossils from the Ordovician Bardahessiagh Formation, Co. Tyrone, Ireland: Irish Journal of Earth Sciences, v. 28, p. 1–12.Google Scholar
Mángano, M.G., 2011, Trace-fossil assemblages in a Burgess Shale–type deposit from the Stephen Formation at Stanley Glacier, Canadian Rocky Mountains: Unraveling ecologic and evolutionary controls, in Johnston, P.A., and Johnston, K.J., eds., Proceedings of the International Conference on the Cambrian Explosion: Palaeontographica Canadiana, v. 31, p. 89–107.Google Scholar
Mángano, M.G., Bromley, R.G., Harper, D.A., Nielsen, A.T., Smith, M.P., and Vinther, J., 2012, Nonbiomineralized carapaces in Cambrian seafloor landscapes (Sirius Passet, Greenland): Opening a new window into early Phanerozoic benthic ecology: Geology, v. 40, p. 519–522.Google Scholar
Masiak, M., and Żylińska, A., 1994, Burgess Shale-type fossils in Cambrian sandstones of the Holy Cross Mountains: Acta Palaeontologica Polonica, v. 39, p. 329–340.Google Scholar
McKirdy, D.M., Hall, P.A., Nedin, C., Halverson, G.P., Michaelsen, B.H., Jago, J.B., Gehling, J.G., and Jenkins, R.J.F., 2011, Paleoredox status and thermal alteration of the lower Cambrian (Series 2) Emu Bay Shale Lagerstatte, South Australia: Australian Journal of Earth Sciences, v. 58, p. 259–272.Google Scholar
Mikuláš, R., Fatka, O., and Szabad, M., 2012, Paleoecologic implications of ichnofossils associated with slightly skeletonized body fossils, middle Cambrian of the Barrandian area, Czech Republic: Ichnos, v. 19, p. 199–210.Google Scholar
Nedin, C., 1999, Anomalocaris predation on nonmineralized and mineralized trilobites: Geology, v. 27, p. 987–990.Google Scholar
Novozhilov, N.I., 1960, in Orlov, Yu. A. (ed.). Osnovy Paleontologii, Arthropoda, Trilobitomorpha and Crustacea: Moscow, Nedra, p. 515.Google Scholar
Paterson, J.R., García-Bellido, D.C., Jago, J.B., Gehling, J.G., Lee, M.S.Y., and Edgecombe, G.D., 2016, The Emu Bay Shale Konservat-Lagerstätte: A view of Cambrian life from East Gondwana: Journal of the Geological Society, v. 173, p. 1–11.Google Scholar
Resser, C.E., 1929, New lower and middle Cambrian Crustacea: Proceedings of the US National Museum, v. 76, p. 1–18.Google Scholar
Stasińska, A., 1960, Velumbrella czarnockii n. gen., n. sp.—medusa du Cambrien inférieur des Monts de Sainte-Croix: Acta Palaeontologica Polonica, v. 5, p. 337–344.Google Scholar
Stein, M., Budd, G.E., Peel, J.S., and Harper, D.A.T., 2013, Arthroaspis n. gen., a common element of the Sirius Passet Lagerstätte (Cambrian, North Greenland), sheds light on trilobite ancestry: BMC Evolutionary Biology, v. 13, p. 99.Google Scholar
Sun, W.G., and Hou, X.G., 1987, Early Cambrian medusae from Chengjiang, Yunnan, China: Acta Palaeontologica Sinica, v. 26, p. 257–271.Google Scholar
Walcott, C.D., 1890, The fauna of the lower Cambrian or Olenellus Zone: Reports of the U.S. Geological Survey, v. 10, p. 509–763.Google Scholar
Walcott, C.D., 1911a, Middle Cambrian holothurians and medusa: Smithsonian Miscellaneous Collections, v. 57, p. 41–68.Google Scholar
Walcott, C.D., 1911b, Cambrian Geology and Paleontology 2. No. 5. Middle Cambrian annelids: Smithsonian Miscellaneous Collections, v. 57, p. 109–145.Google Scholar
Walcott, C.D., 1912, Cambrian Geology and Paleontology 2. No. 6. Middle Cambrian Branchiopoda, Malacostraca, Trilobita, and Merostomata: Smithsonian Miscellaneous Collections, v. 57, p. 145–228.Google Scholar
Walcott, C.D., 1931, Addenda to descriptions of Burgess Shale fossils: Smithsonian Miscellaneous Collections, v. 85, p. 1–46.Google Scholar
Wang, Y., Lin, J.P., Zhao, Y.L., and Orr, P.J., 2009, Palaeoecology of the trace fossil Gordia and its interaction with nonmineralizing taxa from the early middle Cambrian Kaili Biota, Guizhou Province, South China: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 277, p. 141–148.Google Scholar
Zhang, X.G., Bergström, J., Bromley, R.G., and Hou, X.G., 2007, Diminutive trace fossils in the Chengjiang Lagerstätte: Terra Nova, v. 19, p. 407–412.Google Scholar
Zhang, Z., Li, G., Emig, C.C., Han, J., Holmer, L.E., and Shu, D., 2009, Architecture and function of the lophophore in the problematic brachiopod Heliomedusa orienta (early Cambrian, South China): Geobios, v. 42, p. 649–661.Google Scholar
Zhang, Z., et al., 2013, A sclerite-bearing stem group entoproct from the early Cambrian and its implications: Scientific Reports, v. 3, p. 1066.Google Scholar
Zhao, F., Caron, J.-B., Bottjer, D.J., Hu, S., Yin, Z., and Zhu, M., 2014, Diversity and species abundance patterns of the early Cambrian (Series 2, Stage 3) Chengjiang Biota from China: Paleobiology, v. 40, p. 50–69.Google Scholar
Zhao, Y.L., and Zhu, M.Y., 1994, Medusiform fossils of Kaili fauna from Taijiang, Guizhou: Acta Palaeontologica Sinica, v. 33, p. 272–280.Google Scholar
Zhu, M.-Y., Zhao, Y.-L., and Chen, J.-Y., 2002, Revision of the Cambrian discoidal animals Stellostomites eumorphus and Pararotadiscus guizhouensis from South China: Geobios, v. 35, p. 165–185.Google Scholar