Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-20T05:08:44.436Z Has data issue: false hasContentIssue false
  • English
  • Français

New edrioasterine and astrocystitid (Echinodermata: Edrioasteroidea) from the Ninemile Shale (Lower Ordovician), central Nevada

Published online by Cambridge University Press:  28 April 2015

James Sprinkle  and
Colin D. Sumrall
James Sprinkle
Affiliation:
Department of Geological Sciences, Jackson School of Geosciences, University of Texas, 1 University Station C1100, Austin, TX 78712-0254, USA, 〈[email protected]〉
Colin D. Sumrall
Affiliation:
Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TX 37996-1410, USA, 〈[email protected]〉
Get access Rights & Permissions [Opens in a new window]

Abstract

The new edrioasterine Pseudedriophus guensburgi n. gen. n. sp., is described from the Lower Ordovician Ninemile Shale of central Nevada based on three complete to partial small specimens, a well-preserved large ambulacrum, and an isolated ambulacral floor plate. The weathered-out holotype of this edrioasterine exposes the bottom surface of the theca that bears an aboral collar, peduncular stalk, and attachment disk, features that are poorly known in this clade. These specimens were found with a single specimen of a new edrioblastoid, Porosublastus inexpectus n. gen. n. sp., only the second edrioblastoid ever found in the Early Ordovician. Some of the ambulacral cover plates are stripped off one of the ambulacal grooves, revealing new information about how the ambulacra are built in this rare group of bud-shaped edrioasteroids.

Type
Articles
Information
Journal of Paleontology , Volume 89 , Issue 2 , March 2015 , pp. 346 - 352
Copyright
Copyright © 2015, The Paleontological Society 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bassler, R.S., 1935, The classification of the Edrioasteroidea: Smithsonian Miscellaneous Collections, v. 93, p. 1–11.Google Scholar
Bassler, R.S., 1936, New species of American Edrioasteroidea: Smithsonian Miscellaneous Collections, v. 95, p. 1–33.Google Scholar
Bather, F.A., 1898, IV. Studies in Edrioasteroidea, I. Dinocystis barroisi, n. g. et sp., psammites du condroz: Geology Magazine (new series), v. 4, p. 543–548.Google Scholar
Bather, F.A., 1899, A phylogenetic classification of the Pelmatozoa: British Association for the Advancement of Science, Report for 1898, v. 68, p. 916–923.Google Scholar
Bell, B.M., 1976, A study of North American Edrioasteroidea: New York State Museum Memoir, v. 21, 446 p.Google Scholar
Bell, B.M., 1977, Respiratory schemes in the class Edrioasteroidea: Journal of Paleontology, v. 50, p. 1001–1019.Google Scholar
Bell, B.M., 1979, Edrioasteroids (Echinodermata), in Pojeta, J., ed., Contributions to the Ordovician Paleontology of Kentucky and Nearby States: U.S. Geological Survey Professional Paper 1066E, p. E1–E7.Google Scholar
Bell, B.M., 1982, Edrioasteroids, in Sprinkle, J., ed. Echinoderm Faunas from the Bromide Formation (Middle Ordovician) of Oklahoma. University of Kansas Paleontological Contributions, Monograph 1, p. 297–306.Google Scholar
Bell, B.M., and Sprinkle, J., 1978, Totiglobus, an unusual new edrioasteroid from the Middle Cambrian of Nevada: Journal of Paleontology, v. 52, p. 243–266.Google Scholar
Billings, E., 1858, On the Asteriadae of the Lower Silurian rocks of Canada: Geological Survey of Canada, Figures and Descriptions of Canadian Organic Remains, Decade 3, p. 75–85.Google Scholar
Bockelie, J.F., and Paul, C.R.C., 1983, Cyathotheca suecica and its bearing on the evolution of Edrioasteroidea: Lethaia, v. 16, p. 257–264.Google Scholar
Fay, R.O., 1962, Edrioblastoidea, a new class of Echinodermata: Journal of Paleontology, v. 36, p. 201–205.Google Scholar
Guensburg, T.E., and Sprinkle, J., 1994, Revised phylogeny and functional interpretation of the Edrioasteroidea based on new taxa from the Early and Middle Ordovician of western Utah: Fieldiana (Geology), n. s. 29, p. 1–43.Google Scholar
Holloway, D.J., and Jell, P.A., 1983, Silurian and Devonian edrioasteroids from Australian: Journal of Paleontology, v. 57, p. 1001–1016.Google Scholar
Kammer, T.W., Sumrall, C.D., Ausich, W.I., Deline, B., and Zamora, S., 2013, Oral region homologies in Paleozoic crinoids and other plesiomorphic pentaradial echinoderms: PLoS ONE, v. 8, no. 11, p. 1–16.Google Scholar
Kesling, R.V., 1967, Edrioasteroid with unique shape from Mississippian strata of Alberta: Journal of Paleontology, v. 41, p. 197–202.Google Scholar
Mintz, L.W., 1970, The Edrioblastoidea: re-evaluation based on a new specimen of Astrocystites from the Middle Ordovician of Ontario: Journal of Paleontology, v. 44, p. 872–880.Google Scholar
Regnéll, G., 1966, Edrioasteroids, in Moore, R.C., ed., Treatise on Invertebrate Paleontology, Part U (Echinodermata 3): New York and Lawrence, Kansas, Geological Society of America and University of Kansas, p. U135–U173.Google Scholar
Smith, A.B., and Jell, P.A., 1990, Cambrian edrioasteroids from Australia and the origin of starfishes: Memoirs of the Queensland Museum, v. 28, p. 715–778.Google Scholar
Sumrall, C.D., 1993, Thecal designs in isorophinid edrioasteroids: Lethaia, v. 26, p. 289–302.Google Scholar
Sumrall, C.D., 1996, Late Paleozoic edrioasteroids from the North American mid-continent: Journal of Paleontology, v. 70, p. 969–985.Google Scholar
Sumrall, C.D., 2001, Taphonomy and paleoecology of two new edrioasteroids from a Mississippian hardground in Kentucky: Journal of Paleontology, v. 75, p. 136–146.Google Scholar
Sumrall, C.D., 2010, A model for elemental homology for the peristome and ambulacra in blastozoan echinoderms, in Harris, L.G., Böttger, S.A., Walker, C.W., and Lesser, M.P., eds., Echinoderms: Durham: London, CRC Press, p. 269–276.Google Scholar
Sumrall, C.D., and Bowsher, A.L., 1996, Giganticlavus, a new genus of Pennsylvanian edrioasteroid from North America: Journal of Paleontology, v. 70, p. 986–993.Google Scholar
Sumrall, C.D., and Deline, B., 2009, A new species of the dual-mouthed paracrinoid Bistomiacystis and a redescription of the edrioasteroid Edrioaster priscus from the Middle Ordovician Curdsville Member of the Lexington Limestone: Journal of Paleontology, v. 83, p. 135–139.Google Scholar
Sumrall, C.D., and Parsley, R.L., 2003, Morphology and biomechanical implications of isolated discocystinid plates (Edrioasteroidea, Echinodermata) from the Carboniferous of North America: Palaeontology, v. 46, p. 113–138.Google Scholar
Sumrall, C.D., and Waters, J.A., 2012, Universal elemental homology in glyptocystitoids, hemicosmitoids, coronoids and blastoids: steps toward echinoderm phylogenetic reconstruction in derived blastozoa: Journal of Paleontology, v. 86, p. 956–972.CrossRefGoogle Scholar
Sumrall, C.D., and Zamora, S., 2011, Ordovician edrioasteroids from Morocco: faunal exchanges across the Rheic Ocean: Journal of Systematic Palaeontology, v. 9, p. 425–454.Google Scholar
Sumrall, C.D., Heredia, S., Rodriguez, C.M., and Mestre, A.I., 2013, The first report of South American edrioasteroids and the paleoecology and ontogeny of rhenopyrgid echinoderms: Acta Palaeontologica Polonica, v. 58, p. 763–776.Google Scholar
Webby, B.D., 1968, Astrocystites distans sp. nov., an edrioblastoid from the Ordovician of eastern Australia: Palaeontology, v. 11, p. 513–525.Google Scholar
Whiteaves, J.T., 1897, Descriptions of a new genus and species of cystideans from the Trenton Limestone of Ottawa: Canadian Record of Science, v. 6, p. 287–292.Google Scholar
Zamora, S., Sumrall, C.D., and Vizcaïno, D., 2013, Morphology and ontogeny of the Cambrian edrioasteroid (Echinodermata) Cambraster cannati Miquel from western Gondwana: Acta Palaeontologica Polonica, v. 58, p. 545–559.Google Scholar
Zhao, Y.L., Sumrall, C.D., Parsley, R.L., and Peng, J., 2010, Kailidiscus, a new plesiomorphic edrioasteroid from the basal middle Cambrian Kaili Biota of Guizhou Province, China: Journal of Paleontology, v. 84, p. 668–680.Google Scholar
Zhu, X., Zamora, S., and Lefebvre, B., 2014, Morphology and palaeoecology of a new edrioblastoid from the Furongian of China. Acta Palaeontologica Polonica, v. 59, p. 921–926.Google Scholar