Hostname: page-component-8448b6f56d-wq2xx Total loading time: 0 Render date: 2024-04-24T22:46:20.112Z Has data issue: false hasContentIssue false
  • English
  • Français

Phylogenetic relationships of the Middle Ordovician trepostome bryozoans Sonninopora and Bimuropora

Published online by Cambridge University Press:  20 May 2016

Marcus M. Key Jr.  and
Andrew B. Judd
Marcus M. Key Jr.
Affiliation:
Department of Geology, Dickinson College, P.O. Box 1773, Carlisle, Pennsylvania 17013-2896
Andrew B. Judd
Affiliation:
Department of Geology, Dickinson College, P.O. Box 1773, Carlisle, Pennsylvania 17013-2896
Get access Rights & Permissions [Opens in a new window]

Abstract

Bimuropora dendroidea, previously assigned to other genera, is described from Tennessee and B. winchelli is reported from Nevada. The occurrence of B. winchelli in Nevada extends the geographic range of the Middle Ordovician trepostome genus Bimuropora in North America. These two species share many derived characteristics with the halloporids, including a similar growth pattern and fluted zooecial walls in the endozone. This strengthens the hypothesis that the bimuroporids are a sister group to the halloporids. Sonninopora, a monospecific genus, contains these same features, and because of the presence of acanthostyles it is removed from the family Halloporidae and assigned to the family Bimuroporidae.

Type
Research Article
Information
Journal of Paleontology , Volume 68 , Issue 2 , March 1994 , pp. 233 - 241
Copyright
Copyright © 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. 1911. The early Paleozoic Bryozoa of the Baltic provinces. U.S. National Museum, Bulletin U.S. National Museum, Bulletin, 382 p.Google Scholar
Bassler, R. S. 1935. Bryozoa, p. 1–229. In Quenstedt, W. (ed.), Fossilium Catalogus, 1: Animalia, Pt. 67. W. Junk's, Gravenhage.Google Scholar
Bassler, R. S. 1953. Bryozoa, p. G1–G253. In Moore, R. C. (ed.), Treatise on Invertebrate Paleontology, Part G, Bryozoa. Geological Society of America and University of Kansas Press, Lawrence.Google Scholar
Borg, F. 1926. Studies on recent cyclostomatous Bryozoa. Zoologiska Bidrag fran Uppsala, 10:181–507.Google Scholar
Bork, K. B., and Perry, T. G. 1967. Bryozoa (Ectoprocta) of Champlainian age (Middle Ordovician) from northwestern Illinois and adjacent parts of Iowa and Wisconsin. Part I. Amplexopora, Monotrypella, Hallopora, and Batostoma. Journal o. Paleontology, 41:1365–1392.Google Scholar
Brown, G. D. Jr. 1965. Trepostomatous bryozoa from the Logana and Jessamine Limestones (Middle Ordovician) of the Kentucky Bluegrass region. Journal of Paleontology, 39:974–1006.Google Scholar
Conti, S., and Serpagli, E. 1987. Functional morphology of the cap-like apparatus in autozooids of a Palaeozoic trepostome bryozoan. Lethaia, 20:1–20.Google Scholar
Coryell, H. N. 1921. Bryozoan faunas of the Stones River Group of central Tennessee. Proceedings of the Indiana Academy of Sciences, 1919:261–340.Google Scholar
Ehrenberg, C. G. 1831. Symbolae Physicae, seu Icones et Descriptiones Mammalium, Avium, Insectorum et Animalium Evertebratorum. Pars Zoologica, Volume 4, Berlin.Google Scholar
Fritz, M. A. 1957. Bryozoa (mainly Trepostomata) from the Ottawa Formation (Middle Ordovician) of the Ottawa-St. Lawrence Lowland. Geological Survey of Canada Bulletin, 42:1–75.Google Scholar
Harland, W. B., Cox, A. V., Llewellyn, P. G., Pickton, C. A. G., Smith, A. G., and Walters, R. 1982. A Geologic Time Scale. Cambridge University Press, Cambridge, 131 p.Google Scholar
Karklins, O. L. 1985. Bryozoans from the Murfreesboro and Pierce Limestones (Early Black Riveran, Middle Ordovician), Stones River Group, of Central Tennessee. Journal of Paleontology, 59, Paleontological Society Memoir 15, 42 p.CrossRefGoogle Scholar
Key, M. M. Jr. 1990. A new family of trepostome bryozoans from the Ordovician Simpson group of Oklahoma. Journal of Paleontology, 64:700–724.Google Scholar
Key, M. M. Jr. 1991. The halloporid trepostome bryozoans from the Ordovician Simpson Group of Oklahoma. Journal of Paleontology, 65:200–212.Google Scholar
Loeblich, A. R. Jr. 1942. Bryozoa from the Ordovician Bromide Formation, Oklahoma. Journal of Paleontology, 16:413–436.Google Scholar
McKinney, F. K. 1971. Trepostomatous Ectoprocta (Bryozoa) from the Lower Chickamauga Group (Middle Ordovician), Wills Valley, Alabama. Bulletins of American Paleontology, 60:195–337.Google Scholar
McKinney, F. K. 1977. Autozooecial budding patterns in dendroid Paleozoic bryozoans. Journal of Paleontology, 51:303–329.Google Scholar
Merida, J. E., and Boardman, R. S. 1967. The use of Paleozoic Bryozoa from well cuttings. Journal of Paleontology, 41:763–765.Google Scholar
Perry, T. G. 1962. Sprechts Ferry (Middle Ordovician) bryozoan fauna from Illinois, Wisconsin, and Iowa. Illinois State Geological Survey, Circular No. 326, 36 p.Google Scholar
Ross, J. P. 1969. Champlainian (Ordovician) Ectoprocta (Bryozoa), New York State, Part II. Journal of Paleontology, 43:257–284.Google Scholar
Ross, R. J. Jr., et al. 1982. The Ordovician system in the United States. International Union of Geological Societies, Publication 12, 73 p.Google Scholar
Ulrich, E. O. 1882. American Paleozoic Bryozoa. Journal of the Cincinnati Society of Natural History, 5:121–175, 232-257.Google Scholar
Ulrich, E. O. 1886. Report on the Lower Silurian Bryozoa with preliminary descriptions of some of the new species. Geological and Natural History Survey of Minnesota, Annual report, 14:58–103.Google Scholar
Ulrich, E. O. 1893. The Bryozoa of the Lower Silurian in Minnesota. Geological and Natural History Survey of Minnesota, Final report, 3:96–332.CrossRefGoogle Scholar
Vinassa de Regny, P. E. 1921. On the classification of the trepostomes. Atti della Societa Italiana di Scienze Naturali e del Museo Civico di Storia Naturale de Milano, 59:212–231.Google Scholar
Williams, A., et al. 1972. A correlation of Ordovician rocks in the British Isles. Geological Society of London, Special Report 3, 74 p.Google Scholar
Wilson, A. E. 1921. The range of certain Lower Ordovician faunas of the Ottawa Valley with descriptions of some new species. Canada Geological Survey Bulletin, 33:19–57.Google Scholar