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1 April 2015 TRYPANITES-TYPE ICHNOFACIES AT THE BAY OF FUNDY, NOVA SCOTIA, CANADA
CAROLYN M. FURLONG, MURRAY K. GINGRAS, JOHN-PAUL ZONNEVELD
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Abstract

The Trypanites ichnofacies is frequently associated with low biotic and trace diversity, and erosional or nondepositional conditions. However, analysis of an extensively exposed, modern, siliciclastic, intertidal hardground community near Thomas Cove, located at Economy Point, Nova Scotia, within the Bay of Fundy, reveals a diverse community of boring, encrusting, and squatting/clinging organisms and a diverse assemblage of sedimentary structures. A high diversity of biota and low diversity, but high abundance, of borings is present along this modern Trypanites-type ichnofacies. Species richness reaches 37 organisms within the study area, and two boring bivalves (Petricola pholadiformis and Zirfaea pilsbryi), which produce Gastrochaenolites-like traces, are present. Eleven distinct depositional subenvironments are identified and are categorized as being either Trypanites-bearing or Trypanites-barren. Analysis of this modern analogue suggests that ancient Trypanites ichnofacies may have been more dynamic and diverse environments than is sometimes interpreted from the rock record.

SEPM (Society for Sedimentary Geology)
CAROLYN M. FURLONG, MURRAY K. GINGRAS, and JOHN-PAUL ZONNEVELD "TRYPANITES-TYPE ICHNOFACIES AT THE BAY OF FUNDY, NOVA SCOTIA, CANADA," PALAIOS 30(4), 258-271, (1 April 2015). https://doi.org/10.2110/palo.2014.056
Received: 3 July 2014; Accepted: 1 January 2015; Published: 1 April 2015
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