pedicle sheath
From ZooTerms (Dictionary of Invertebrate Zoology)
Revision as of 12:17, 10 September 2013 by Andreas Plank (Talk | contribs)
Brachiopoda) A tube projecting posteroventrally from the ventral umbo; probably enclosing the pedicle in the young stages of shell development with a supra-apical pedicle foramen.
pedicle sheath: (