Do these mean the same?
Pterymarchia barclayana is a species of the great predatory sea snails , a marine gastropod mollusk in the Muricidae family , rock snails or murex screws .
Pterymarchia barclayana is a species of large predatory sea snail , a marine gastropod mollusk in the family Muricidae , the rock snails or murex snails .

OPT: A). no. B). yes.
B).