Evidence that inoceramid bivalves were benthic and harbored chemosynthetic symbionts

Abstract

Research Article| February 01, 1992 Evidence that inoceramid bivalves were benthic and harbored chemosynthetic symbionts Kenneth G. MacLeod; Kenneth G. MacLeod 1Department of Geological Sciences, AJ-20, University of Washington, Seattle, Washington 98195 Search for other works by this author on: GSW Google Scholar Kathryn A. Hoppe Kathryn A. Hoppe 1Department of Geological Sciences, AJ-20, University of Washington, Seattle, Washington 98195 Search for other works by this author on: GSW Google Scholar Author and Article Information Kenneth G. MacLeod 1Department of Geological Sciences, AJ-20, University of Washington, Seattle, Washington 98195 Kathryn A. Hoppe 1Department of Geological Sciences, AJ-20, University of Washington, Seattle, Washington 98195 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1992) 20 (2): 117–120. https://doi.org/10.1130/0091-7613(1992)020<0117:ETIBWB>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Kenneth G. MacLeod, Kathryn A. Hoppe; Evidence that inoceramid bivalves were benthic and harbored chemosynthetic symbionts. Geology 1992;; 20 (2): 117–120. doi: https://doi.org/10.1130/0091-7613(1992)020<0117:ETIBWB>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Inoceramid bivalves have been interpreted as both benthic and pseudoplanktonic. The comparison of 18O/16O and 13C/12C signatures of inoceramid shells with surface-dwelling and bottom-dwelling organisms should provide a simple means of resolving the controversy; however, we have found that the stable- isotope pattern is ambiguous. The bivalves have oxygen values similar to their contemporary benthic foraminifera but have carbon values similar to their contemporary planktonic foraminifera. We attempt to resolve this paradox by interpreting those inoceramids analyzed as benthic organisms that harbored chemosynthetic symbionts. A similar pattern of heavy oxygen and heavy carbon values is found in shell carbonate of some modern bivalves with chemosynthetic symbionts living around cold seeps off the coast of Oregon. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.