top-shell

top-shell

n
(Animals) any marine gastropod mollusc of the mainly tropical Old World family Trochidae, having a typically brightly coloured top-shaped or conical shell
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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References in periodicals archive ?
A new species of top-shells (Trochidae) was discovered around the Leiyu Township in Taiwan's Kinmen County - Kinmen Top-shell, the first to be named after the outlying islands.
The Kinmen Top-shell sports a pyramid shell comprised of circles of colorful beads featuring hues from gold and pink to purple.
The forearm is slim and decorated with 22 line-per-inch checkering you would see on a top-shell field gun, which the Maxus is.