fucoid

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fucoid

[′fyü‚kȯid]
(geology)
A tunnellike marking on a sedimentary structure identified as a trace fossil but not referred to a described genus.
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References in periodicals archive ?
The growth and gonad production of Hemicentrotus pulcherrimus, which is commercially harvested in western Japan, were greatest in fucoid beds, lower in beds dominated by the small red algae Acrosorium polyneurum and Chondrus spp.
The intertidal zone is characterized by luxuriant canopies of fucoid algae (Fucus vesiculosus, F.
due to a lower abundance of resident fucoids there.