A division of Invertebrata which includes the classes
Brachiopoda and
Bryozoa; -- called also
Anthoid Mollusca. [
1913 Webster]
" Originally the Tunicata were included under Molluscoidea, from which they are known to differ widely in structure and embryology. Molluscoidea were formerly considered a subdivision of Mollusca, but they are now known to have more relationship with Annelida than with Mollusca."
[1913 Webster]