A lancet is a medical instrument, similar to a Scalpel but with a double-edged Blade .
A lancet, also called '''Amphioxus''', is a primitive member of the PhylumChordata in SubphylumCephalochordata . It superficially resembles a small fish in the shape of the medical instrument (above). They are frequently found buried in sand in warm, tropical waters and reach the size of five centimeters. See Lancelet .
