New discoveries of the oldest trilobites Profallotaspis and Nevadella in the northeastern Siberian Platform, Russia

 

Authors: Bushuev E, Goryaeva I, Pereladov V

Published in: Bulletin of Geosciences, volume 89, issue 2; pages: 347 - 364; Received 25 January 2013; Accepted in revised form 3 March 2014; Online 24 March 2014

Keywords: Fallotaspididae, Profallotaspis, Nevadella, Paranevadella, trilobites, Cambrian Stage 3, Siberian Platform,

full text (PDF, 4.64 MB)

Export to RIS

 

Abstract

Possibly the most ancient trilobites on the Siberian platform, belonging to the the Superfamily Fallotaspidoidea, were collected 36 m above the base of the middle Tyusser Formation, traditional lower Cambrian (Global Stage 3), in the Ulakhan-Aldyarkhai Creek section on the northern edge of the Cambrian Yudoma-Olenek sedimentary basin. These trilobite remains are probably slightly older that the first occurence of Profallotaspis jakutensis Repina, 1965 at other localities. Profallotaspis tyusserica sp. nov., although an olenellid, is characterised, among other features, by the “facial lines” that are possible incipient facial sutures, present anteriorly of ocular lobes and crossing the anterior margin of the cephalon. The occurrence of Profallotaspis tyusserica sp. nov. in the section is referred to the Profallotaspis Zone. The trilobites from the Pagetiellus anabarus-Nevadella Zone of the Cambrian Stage 3 were found 14.2 m above the FAD of Profallotaspis

References

Anonymous 1983. Resheniya Vsesoyuznogo stratigraficheskogo soveshchaniya po dokembriyu, paleozoyu i chetvertichnoy sisteme Sredney Sibiri [Resolution of All-Union Stratigraphic Meeting on the Precambrian, Palaeozoic and Quarternary System of Middle Siberia]. Part I (Upper Precambrian and Lower Palaeozoic). 216 pp. Siberian Research Institute of Geology, Geophysics and Mineral Resources Press, Novosibirsk. [in Russian]

Astashkin, V.A., Pegel, T.V., Repina, L.N., Rozanov, A.Y., Shabanov, Y.Y., Zhuravlev, A.Y., Sukhov, S.S. & Sundukov, V.M. 1991. The Cambrian System on the Siberian Platform. Correlation chart and explanatory notes. International Union of Geological Sciences Publication 27, 1-133.

Bengtson, S., Conway Morris, S., Cooper, B.J., Jell, P.A. & Runnegar, B.N. 1990. Early Cambrian fossils from South Australia. Memoirs of the Association of Australasian Palaeontologists 9, 1-364.

Cobbold, E.S. 1935. A new genus of the Trilobita and a new species of the Conchostraca from the Cambrian of the Carteret region, N.W. France. Annals and Magazine of Natural History, Series 10(15), 381-392.

Egorova, L.I., Repina, L.N. & Suvorova, N.P. 1983. Lower Cambrian stage subdivision of the Siberia. Atlas of fossils. Akademiya nauk SSSR, Sibirskoe otdelenie, Trudy Instituta geologii i geofiziki 558, 1-216. [in Russian]

Fritz, W.H. 1972. Lower Cambrian trilobites from the Sekwi Formation type section, Mackenzie Mountains, northwestern Canada. Geological Survey of Canada Bulletin 212, 1-90.

Geyer, G. 1996. The Moroccan fallotaspidid trilobites revisited. Beringeria 18, 89-199.

Harrington, H.J. 1959. Morphological terms applied to Trilobita, 117-126. InMoore, R.C. (ed.) Treatise on Invertebrate Palaeontology, Part O, Arthropoda 1. Geological Society of America & University of Kansas Press, New York & Lawrence.

Hollingsworth, J.S. 2007. Fallotaspidoid trilobite assemblage from the Esmeralda Basin (western Nevada, U.S.A.). Memoirs of the Australasian Association of Palaeontologists 32, 123-140.

Hollingsworth, J.S. 2011. Lithostratigraphy and biostratigraphy of Cambrian Stage 3 in western Nevada and eastern California. Museum of Northern Arizona Bulletin 67, 26-42.

Hupé, P. 1953. Contribution a l’étude du Cambrien inférieur et du Précambrien III de l’Anti-Atlas marocain. Service géologique du Maroc, Notes et Mémoires 103, 1-402.

Jell, P.A. 2003. Phylogeny of Early Cambrian trilobites, 45-57. In Lane, P.D., Siveter, D.J. & Fortey, R.A. (eds) Trilobites and their relatives, contributions from the Third International Conference, Oxford, 2001. Special Papers in Palaeontology 70.

Khomentovskiy, V.V. & Repina, L.N. 1965. The Lower Cambrian stratotype section of Siberia. 199 pp. Akademiya nauk SSSR, Moscow. [in Russian]

Lazarenko, N.P. 1962. New Lower Cambrian trilobites of the Soviet Arctic, 29-78. In Shvedov, N.A. (ed.) Trudy Nauchno-issledovateľskogo instituta geologii Arktiki SSSR (NIIGA) 29. 92 pp. Leningrad. [in Russian]

Palmer, A.R. & Repina, L.N. 1993. Through a glass darkly: taxonomy, phylogeny and biostratigraphy of the Olenellina. University of Kansas Paleontological Contributions, New Series 3, 1-35.

Palmer, A.R. & Repina, L.N. 1997. Introduction to Suborder Olenellina, 405-428. In Moore, R.C. & Kaesler, R.L. (eds) Treatise on Invertebrate Paleontology, Part O, Arthropoda 1, Trilobita, Revised. Geological Society of America & University of Kansas Press, Boulder & Lawrence.

Pillola, G.L. 1993. The Lower Cambrian trilobite Bigotina and allied genera. Palaeontology 36, 855-881.

Raw, F. 1936. Mesonacidae of Comley in Shropshire, with a discussion of classification within the family. Quarterly Journal of the Geological Society of London 92, 236-293.View article

Repina, L.N., Lazarenko, N.P., Meshkova, N.P., Korshunov, V.I., Nikiforov, N.I. & Aksarina, N.A. 1974. Biostratigraphy and fauna of the Lower Cambrian of Kharaulakh (Tuora-Sis ridge), 1-299. In Sokolov, B.S. & Repina, L.N. (eds) Akademiya nauk SSSR, Sibirskoe otdelenie, Trudy Instituta geologii i geofiziki 235. [in Russian]

Repina, L.N. 1979. Dependence of morphologic features on habitat conditions in trilobites and evaluation of their significance for the systematics of the Superfamily Olenelloidea. Akademiya nauk SSSR, Sibirskoe otdelenie, Trudy Instituta geologii i geofiziki 431, 11-30. [in Russian]

Repina, L.N. 1982. Ecotypes of trilobites Olenelloides, 46-60. In Betechtina, O.A. & Zhuravleva, I.T. (eds) Sreda i zhizn’ v geologicheskom proshlom. Paleolandshafty i biofacii. Nauka, Novosibirsk. [in Russian]

Repina, L.N. & Lutchinina, V.A. 1981. To the biostratigraphy of the lower part of the Cambrian in the northwestern Prianabarye (Fomich R.). Akademiya nauk SSSR, Sibirskoe otdelenie, Trudy Instituta geologii i geofiziki 475, 3-19. [in Russian]

Sdzuy, K. 1978. The Precambrian-Cambrian boundary beds in Morocco (preliminary Report). Geological Magazine 115(2), 83-94.View article

Suvorova, N.P. 1960. Cambrian trilobites from the eastern Siberian Platform. Part 2: Olenellida-Granulariida. Trudy Paleontologicheskogo instituta, Akademiya nauk SSSR 84, 1-238. [in Russian]

Walcott, C.D. 1890. The fauna of the Lower Cambrian or Olenellus Zone. U.S. Geological Survey, 10th Annual Report 1, 509-760.

Walcott, C.D. 1913. Cambrian Geology and Paleontology, No. 11. New Lower Cambrian subfauna. Smithsonian Miscellaneous Collections 57, 309-326.

Yuan, J.L., Zhu, X.J., Lin, J.P. & Zhu, M.Y. 2011. Tentative correlation of Cambrian Series 2 between South China and other continents. Bulletin of Geosciences 86(3), 397-404.View article

Zhang, W.T. 1966. On the classification of Redlichiacea, with description of new families and genera. Acta Palaeontologica Sinica 14, 135-184.