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Life association of shell and operculum of Middle Ordovician gastropod Maclurites

Published online by Cambridge University Press:  20 May 2016

David M. Rohr  and
Ellis L. Yochelson
David M. Rohr
Affiliation:
Sul Ross State University, Alpine, TX 79832,
Ellis L. Yochelson
Affiliation:
Department of Paleobiology, National Museum of Natural History, Washington, D.C. 20560
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Abstract

The only two known life associations of the shell and operculum of Maclurites Le Sueur, 1818, are described for the first time. Maclurites cf. magnus Le Sueur, 1818, from the Middle Ordovician of Alaska demonstrates that the operculum fits slightly inside the aperture, and when closed, the operculum extends down below the base of the shell and may have acted as an anchor. The operculum of Maclurites bigsbyi (Hall, 1861), from the Middle Ordovician of Wisconsin, is illustrated for the first time and is confirmed to be distinct from Maclurina logani (Salter, 1859).

Type
Research Article
Information
Journal of Paleontology , Volume 73 , Issue 6 , November 1999 , pp. 1078 - 1080
Copyright
Copyright © The Paleontological Society 

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References

Dutro, J. T., and Patton, W. W. Jr. 1982. New Paleozoic formations in the northern Kuskokwim Mountains, west-central Alaska. U.S. Geological Survey Bulletin, 1529-H:H13–H22.Google Scholar
Fischer, P. 1885. Manuel de conchyliologie et de paléontologie conchyliologie, ou histoire naturelle des mollusques vivants et fossiles, fasc. 8. F. Savy, Paris, p. 689–784.Google Scholar
Hall, J. 1861. Descriptions of new species of fossils from the investigations of the Survey. Report to the Superintendent of the Geological Survey, 1861, p. 11–52.Google Scholar
Knight, J. B. 1944. Paleozoic Gastropoda, p. 457–479. In Shimer, H. W. and Shrock, R. R. (eds.), Index Fossils of North America. M.I.T. Press, Cambridge.Google Scholar
Le Sueur, C. A. 1818. Observations on a new genus of fossil shells. Journal of the Academy of Natural Sciences of Philadelphia, 1:310–313.Google Scholar
Measures, E. A., Blodgett, R. B., and Rohr, D. M. 1992. Depositional environments and some aspects of the fauna of Middle Ordovician rocks of the Telsitna Formation, northern Kuskokwim Mountains, Alaska. U.S. Geological Survey Bulletin, 2041:186–201.Google Scholar
Rohr, D. M. 1994. Middle Ordovician (Whiterockian) gastropods from the Great Basin. Journal of Paleontology, 68:473–486.Google Scholar
Rohr, D. M., Blodgett, R. B., and Furnish, W. M. 1992. Maclurina manitobensis (Whiteaves), largest Paleozoic gastropod? Journal of Paleontology, 66:880–884.Google Scholar
Salter, J. W. 1859. Figures and descriptions of Canadian organic remains, Decade 1. Geological Survey of Canada, Montreal, 47 p.CrossRefGoogle Scholar
Sloan, R. E., and Webers, G. F. 1987. Stratigraphic ranges of Middle and Late Ordovician Gastropoda and Monoplacophora of Minnesota, p. 183–186. In Sloan, R. E. (ed.), Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley. University of Minnesota Report of Investigations, 35.Google Scholar
Ulrich, E. O. 1911. Revision of the Paleozoic Systems. Geological Society of America Bulletin, 22:281–680.CrossRefGoogle Scholar
Ulrich, E. O., and Scofield, W. H. 1897. The Lower Silurian Gastropoda of Minnesota, p. 813–1081. In The Geology of Minnesota, Volume 3, Pt. 2, Paleontology. Harrison and Smith, Minneapolis.Google Scholar
Whitfield, R. P. 1882. Palaeontology, Pt. III, p. 163–363. In Geology of Wisconsin, Survey of 1873-1879, Volume 4, Madison.Google Scholar
Whitfield, R. P. 1895. Republication of descriptions of fossils from the Hall collections in the American Museum of Natural History, from the Report of Progress for 1861 of the Geological Survey of Wisconsin by James Hall, with illustrations from the original type specimens not heretofore figured. Memoir of the American Museum of Natural History, Volume 1, Pt. 2, p. 39–74.Google Scholar
Yochelson, E. L. 1990. Billings' second operculum: a late Early Ordovician Maclurites (Gastropoda) from western Newfoundland and the Canadian Arctic. Canadian Journal of Earth Sciences, 27:669–676.CrossRefGoogle Scholar
Yochelson, E. L., and Jones, C. R. 1968. Teiichispira, a new Early Ordovician genus. U.S. Geological Survey Professional Paper 613-B, 13 p.Google Scholar
Yochelson, E. L., and Wise, O. A. 1972. A life association of shell and operculum in the Early Ordovician gastropod Ceratopea unguis . Journal of Paleontology, 46:681–684.Google Scholar