The mantle, a thin membrane surrounding the body, secretes the shell valves, ligament and hinge teeth.
The type of fairing which separates into two halves upon jettisoning is called a clamshell fairing by way of analogy to the bifurcating shell of a clam.
Numerous clamshell beads, a major currency among the Indians of Central California, were also found, indicating a vast trade network.
Royal Dutch Shell | Shell | Shell Oil Company | Secure Shell | shell | Ghost in the Shell: Stand Alone Complex | Ghost in the Shell | Shell-Mex and BP | Shell Canada | Shrapnel shell | Shell (projectile) | gastropod shell | National Shell Filling Factory, Chilwell | Unix shell | Shell Rock River | Shell Nigeria | Shell Australia | Röchling Shell | Röchling shell | Nuclear shell model | Karl Shell | Bivalve shell | Shotgun shell | shell shock | Shell Point | shell model | Shell Mera | Shell Dockley | Shell Beach | Mollusc shell |
In compiling this, the authors used a variety of phylogenetic information including molecular analysis, anatomical analysis, shell morphology and shell microstructure as well as bio-geographic, paleobiogeographic and stratigraphic information.