uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Teller's operculum: revising a rare operculate gastropod from the Silurian of Wisconsin (Laurentia)
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
2018 (English)In: Bulletin of Geosciences, ISSN 1214-1119, E-ISSN 1802-8225, Vol. 93, no 4, p. 499-511Article in journal (Refereed) Published
Abstract [en]

The unique Silurian gastropod with the operculum in place which Edgar E. Teller in 1910 assigned to Murchisonia conradi Hall is redescribed. The date of authorship of Murchisonia conradi Hall, now transferred to Lophospira Whitfield, and originally described from the Racine Formation of Wisconsin (Laurentia), is established as 1865 and not 1867, 1868 or 1870 as variously claimed. With a focus on the operculum, previous studies of Teller's specimen have neglected the form of the shell itself. Latex casts drawn from the external mould motivate its description as a new species, Lophospira telleri sp. nov., and demonstrate that the operculum was positioned deep within the shell aperture. Although being the only proven lophospiroidean operculum, the paucispiral sinistral (in external view) operculum is typical for dextral gastropods of moderate height in which the parietal wall is well developed and the umbilicus narrow. The development of opercula of this type, and the depth of emplacement of the operculum in L. telleri, may reflect increasing predation pressure on gastropods in the Lower Palaeozoic. Suggestions that the operculum of L. telleri may represent the inner surface of an operculum similar to that in the common Silurian euomphaloidean Oriostoma are rejected. In addition to the original record from Wisconsin, isolated opercula of L. telleri are now reported from Thomton Quarry, Illinois.

Place, publisher, year, edition, pages
2018. Vol. 93, no 4, p. 499-511
Keywords [en]
Silurian, operculate gastropod, Lophospiroidea, Laurentia
National Category
Other Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-373221DOI: 10.3140/bull.geosci.1725ISI: 000454215400006OAI: oai:DiVA.org:uu-373221DiVA, id: diva2:1278013
Available from: 2019-01-11 Created: 2019-01-11 Last updated: 2019-01-11Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Authority records BETA

Peel, John Stuart

Search in DiVA

By author/editor
Peel, John Stuart
By organisation
Palaeobiology
In the same journal
Bulletin of Geosciences
Other Earth and Related Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 2 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf