bolinus brandaris造句

• A talus of crushed shells of " murex " shells ( correctly, specimens of " Bolinus brandaris " and " Hexaplex trunculus " ) along the western slope can still be seen.
• Although not as widely utilised as other murex species, such as " Bolinus brandaris ", " Bolinus cornutus " is one of the sea snail species from which a rich purple dye, generally referred to as Tyrian purple, can be extracted.
• Its extraction was variable and complicated, and dependent on the availability of the very specific type of shell ( actually two types, now known the one as Bolinus brandaris, and the other as Hexaplex trunculus, nowadays classified within two different genders ) from which it was extracted.