anterior adductor muscle造句

• Unlike most bivalves, oysters do not have a foot in adulthood; they also lack an anterior adductor muscle and do not secrete byssal threads, like mussels do.
• However the placement of the umbo and anterior adductor muscle plus tooth size in the solitary fossil do not match " H . minuta " and thus S醤chez did not place the specimen into " H . minuta ".
• The position of this line is often quite clearly visible on the inside of each valve of a bivalve shell, as a shiny line, the pallial line, which runs along a small distance in from the outer edge of each valve, usually joining the anterior adductor muscle scar to the posterior adductor muscle scar.