Question

How do biologist classify a pearl oyster?

Answer 1

Phylum Mollusca
 Class Bivalvia Subclass Pterimorphia (Suzuki 1985) 
Order Pterioida (Suzuki 1985) or M~tiloida (Richard 1985)
 Family Pteriidae 

Answer 2

they are classify in spcies
of named as mollusca