Redescription of the gastropod Euomphalus undiferus Schmidt, 1858 from the Upper Llandovery Rumba Formation of Estonia requires reinvestigation of the hitherto monotypic genus Kiaeromphalus Peel & Yochelson, 1976, originally described from the Rytteråker Formation of the Oslo Region. The Estonian K. undiferus and the Norwegian type species occur in similar depositional facies of Early Silurian age within the sedgwickii Graptolite Zone. The redescribed type specimen of Horologium kokeni Perner, 1907 from the late Silurian (Ludlow) of Bohemia shows strong morphological convergence with the two Baltic species, but Kiaeromphalus is distinguished by its lower rate of whorl expansion and less oblique aperture. Both genera were adapted to a sessile life, possibly on a soft substratum.
Homeomorphic gastropods from the Silurian of Norway, Estonia and Bohemia
Reprints and Corporate Permissions
Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?
To request a reprint or corporate permissions for this article, please click on the relevant link below:
Academic Permissions
Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?
Obtain permissions instantly via Rightslink by clicking on the button below:
If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.
Related research
People also read lists articles that other readers of this article have read.
Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.
Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.