Mollusc and brachiopod skeletal hard parts: Intricate archives of their marine environment
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چکیده
منابع مشابه
Possible co-option of engrailed during brachiopod and mollusc shell development.
In molluscs, two homeobox genes, engrailed (en) and distal-less (dlx), are transcription factors that are expressed in correlation with shell development. They are expressed in the regions between shell-forming and non-shell-forming cells, likely defining the boundaries of shell-forming fields. Here we investigate the expression of two transcription factors in the brachiopod Lingula anatina We ...
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15 صفحه اولCellulases of a marine mollusc, Dolabella sp.
1. A crude cellulase extract was prepared from the hepatopancreas of a marine mollusc, Dolabella sp., and partially purified by ammonium sulphate fractionation. 2. The optimum pH values of the partially purified preparation were 6.5 and 8.0 for Walseth cellulose and CM-cellulose respectively. It was most stable at pH6.0 and showed moderate thermostability. 3. The partially purified preparation ...
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Influence of Mollusc Species on Marine Δr Determinations
C ages were measured on replicate samples of burnt grain and five mollusc species collected from a single, sealed layer at an archaeological site (Hornish Point) on the west coast of South Uist, Scotland. The aim was to examine the impact of using different mollusc species on ΔR determinations that are calculated using the paired terrestrial/marine sample approach. The mollusc species examined ...
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ژورنال
عنوان ژورنال: Sedimentology
سال: 2015
ISSN: 0037-0746,1365-3091
DOI: 10.1111/sed.12231