Trace fossils in the Ecca of northern Natal and their palaeoenviromental significance

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dc.contributor.authorHobday, D K
dc.contributor.authorTavener-Smith, R
dc.date.accessioned2015-01-09T07:26:16Z
dc.date.available2015-01-09T07:26:16Z
dc.date.issued1975
dc.description.abstractBecause of the rarity of body fossils in the Ecca Group fossil burrows, tracks and trails are of potential value in supplementing primary sedimentary evidence concerning the palaeoenvironmental factors of bathymetry, energy level and food supply. The three most important ichnogenera are Skolithos, Corophioides and Scolicia. The first two are restricted to the upper portions or Middle Ecca upward-coarsening regressive cycles attributed to delta progradation. They arc representatives of Seilacher's (1967) Skolithos and Glossijungites communities, indicating shallow water conditions with diastems. Scolicia occurs at lower levels in the cycles and corresponds to Seilacher's deeper water Cruziana community. Meandering trails Helminthopsis and Taphrhelminthopsis in the Lower Ecca belong to Seilacher's deep water Nereites community. Less common ichnogenera include the U-burrows Diplocraterion and Rhizocorallium. It has proved impossible positivelv to identify many trace fossils such as short ramifying burrows, chevron trails, dumbbell-shaped surface impressions, digitate tracks and problematic elliptical casts. Trace fossils have not been recognised with certainty in the fluviatile deposits which comprise the bulk or the coal-bearing strata of northern Natal.en_ZA
dc.description.sponsorshipCSIRen_ZA
dc.identifier.issn0078-8554
dc.identifier.urihttp://hdl.handle.net/10539/16291
dc.language.isoenen_ZA
dc.publisherBernard Price Institute for Palaeontological Researchen_ZA
dc.subjectichnotaxonen_ZA
dc.subjectsedimentologyen_ZA
dc.subjectmarine animalen_ZA
dc.titleTrace fossils in the Ecca of northern Natal and their palaeoenviromental significanceen_ZA
dc.typeArticleen_ZA
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Volume 18 1975