articulamentum

From ZooTerms (Dictionary of Invertebrate Zoology)
Jump to: navigation, search
articulamentum (noun; Latin articulare, to divide): (Mollusca: Polyplacophora) The shell layer between the tegmentum and hypostracum, that is composed of several separate components of crystalline shell structure; formerly the hard, semiporcellaneous shell layer projecting past the tegmentum forming the insertion plates and the sutural laminae.