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A diverse Holocene molluscan fauna including Anadara trapezia from Royal Park, Launceston, Tasmania

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Goede, A and Murray-Wallace, C and Turner, E (1993) A diverse Holocene molluscan fauna including Anadara trapezia from Royal Park, Launceston, Tasmania. Papers and Proceedings of the Royal Society of Tasmania, 127. pp. 17-22. ISSN 0080-4703

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Abstract

Estuarine sediments exposed during road construction at Royal Park in the city of Launceston, northern Tasmania, were found to contain
a diverse molluscan fauna with some 40 species identified. An unusual occurrence was the presence of six specimens of Anadara trapezia,
a species not previously encountered in situ in Quaternary marine or estuarine deposits in Tasmania. Amino acid racemisation and
electron spin resonance, calibrated against radiocarbon dating, point to a late Holocene age for this estuarine sequence. A numeric age of
2600 ±400 yrs BP was derived for a specimen of A. trapezia, based on the extent of leucine and valine racemisation. Electron spin resonance
data are consistent with this age assessment. The presence of A. trapezia in late Holocene sediments at Launceston may imply slightly warmer
water temperatures during the late Holocene.

Item Type: Article
Keywords: Royal Society of Tasmania, RST, Van Diemens Land, natural history, science, ecology, taxonomy, botany, zoology, geology, geography, papers & proceedings, Australia, UTAS Library
Journal or Publication Title: Papers and Proceedings of the Royal Society of Tasmania
Page Range: pp. 17-22
ISSN: 0080-4703
Collections: Royal Society Collection > Papers & Proceedings of the Royal Society of Tasmania
Additional Information:

Copyright Royal Society of Tasmania

Date Deposited: 23 May 2012 01:41
Last Modified: 15 Sep 2017 01:06
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