Distinguishing between oxygen and substrate control in fossil benthic assemblages
- 1 January 1993
- journal article
- Published by Geological Society of London in Journal of the Geological Society
- Vol. 150 (1) , 193-196
- https://doi.org/10.1144/gsjgs.150.1.0193
Abstract
Low diversity benthic shelly assemblages occur under conditions of both low oxygen and very soft substrates. It is therefore important to be able to distinguish between these two environmental parameters. A declining oxygen gradient causes benthic diversity (including epibionts on hard benthic islands) to decline to a zero point. A transition from firm to soft substrates is also associated with a decline in overall benthic faunal diversity but, importantly, this has little affect upon epibionts. Functional morphological studies may also provide information about substrates, for example, thin-shelled bivalves of the ‘paper pecten’ morphology may represent super-soft substrate strategists.This publication has 12 references indexed in Scilit:
- The Callovian-Oxfordian boundary in Oxfordshire and Wiltshire based on two new temporary sectionsPublished by Elsevier ,2008
- Faunal response to transgressive-regressive cycles: example from the Jurassic of western IndiaPalaeogeography, Palaeoclimatology, Palaeoecology, 1991
- Oxygen-related biofacies in marine strata: an overview and updateGeological Society, London, Special Publications, 1991
- The Lower Oxford Clay: production and preservation of organic matter in the Callovian (Jurassic) of central EnglandGeological Society, London, Special Publications, 1991
- Palaeoenvironments of the Nordenskjöld Formation: an Antarctic Late Jurassic—Early Cretaceous black shale-tuff sequenceGeological Society, London, Special Publications, 1991
- Carbonate Substrates of the Late Cretaceous Sea, Central Great Plains and Southern Rocky MountainsPALAIOS, 1986
- Erosion, transport and deposition of fine-grained marine sedimentsGeological Society, London, Special Publications, 1984
- Comparison of major sequences of organic-rich mud deposition in the British JurassicJournal of the Geological Society, 1980
- Functional morphology and palaeontological significance of the conchiolin layers in corbulid pelecypodsLethaia, 1979
- EVOLUTIONARY AND ECOLOGIC SIGNIFICANCE OF OXYGEN‐DEFICIENT MARINE BASINSLethaia, 1971