Paleoecology and Taphonomy of an Edrioasteroid-Dominated Hardground Association from Tentaculitid Limestones in the Early Devonian of New York: A Paleozoic Rocky Peritidal Community

Abstract

Other| June 01, 2003 Paleoecology and Taphonomy of an Edrioasteroid-Dominated Hardground Association from Tentaculitid Limestones in the Early Devonian of New York: A Paleozoic Rocky Peritidal Community SEAN R. CORNELL; SEAN R. CORNELL 1Department of Geology, University of Cincinnati, Cincinnati, OH 45221, cornelsl@email.uc.edu Search for other works by this author on: GSW Google Scholar CARLTON E. BRETT; CARLTON E. BRETT 1Department of Geology, University of Cincinnati, Cincinnati, OH 45221, cornelsl@email.uc.edu Search for other works by this author on: GSW Google Scholar COLIN D. SUMRALL COLIN D. SUMRALL 2Department of Geological Sciences, The University of Tennessee, Knoxville, TN 37996 Search for other works by this author on: GSW Google Scholar Author and Article Information SEAN R. CORNELL 1Department of Geology, University of Cincinnati, Cincinnati, OH 45221, cornelsl@email.uc.edu CARLTON E. BRETT 1Department of Geology, University of Cincinnati, Cincinnati, OH 45221, cornelsl@email.uc.edu COLIN D. SUMRALL 2Department of Geological Sciences, The University of Tennessee, Knoxville, TN 37996 Publisher: SEPM Society for Sedimentary Geology Accepted: 27 Nov 2002 First Online: 03 Mar 2017 Online ISSN: 1938-5323 Print ISSN: 0883-1351 Society for Sedimentary Geology PALAIOS (2003) 18 (3): 212–224. https://doi.org/10.1669/0883-1351(2003)018<0212:PATOAE>2.0.CO;2 Article history Accepted: 27 Nov 2002 First Online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Get Permissions Search Site Citation SEAN R. CORNELL, CARLTON E. BRETT, COLIN D. SUMRALL; Paleoecology and Taphonomy of an Edrioasteroid-Dominated Hardground Association from Tentaculitid Limestones in the Early Devonian of New York: A Paleozoic Rocky Peritidal Community. PALAIOS 2003;; 18 (3): 212–224. doi: https://doi.org/10.1669/0883-1351(2003)018<0212:PATOAE>2.0.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 SocietyPALAIOS Search Advanced Search Abstract The taphonomy, sedimentology, and paleoecology of a rare peritidal hardground in the Lower Devonian (Lochkovian) Thacher Limestone Member of the Manlius Formation in east-central New York State provides insights into sediment dynamics and modes of life of ancient hard substrate-inhabiting organisms. The hardground occurs near the top of a shallowing-upward carbonate cycle, slightly below desiccation-cracked micritic ribbon limestones. The hard surface developed on a partially exhumed tentaculitid pavement and overlying pelletal calcisiltite; the hardground has a relief of about 2–3 cm and is overlain by a thin siliciclastic mud layer. Tentative correlation of the hardground across a lateral distance of about 35 km perpendicular to depositional strike suggests a very subdued topographic profile for this region and development of an extensive peritidal hardground pavement. Tentaculites gyracanthus occurs in a dense pavement of strongly bimodally aligned shells with an ENE to WSW orientation, parallel to the inferred paleoshoreline. Some specimens also occur vertically embedded, suggesting possible life orientations within firm substrates. The presence of pits around the apertures of these shells suggests scouring effects around the shells burrowed into the substrate. Upper portions of the irregular hardground surface were preferentially colonized by an undescribed small postibulinid edrioasteroid, which may have lived somewhat like acorn barnacles on wave-swept rock platforms. The latter shows a population structure with few juveniles. Although fauna within the Thacher limestone includes leperditian ostracodes, ramose and encrusting bryozoans, Howellella vanuxemi brachiopods, and rare pterioid bivalves, the hardground community is rather limited. This low-diversity assemblage represents an unusual edrioasteroid-dominated hardground community type that persisted from at least Early Ordovician to Late Devonian in peritidal hardgrounds and rockgrounds. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.