( A ) Chordata - Notochord at some stage and separate **** and urinary openings to the outside
( B ) Echinoderamata - Pentamerous radial symmetry and mostly internal fertilization
( C ) Mollusca - Normally oviparous and development through a trochophore or veliger larva
( D ) Arthropoda - Body divided into head, thorax and abdomen and respiration by tracheae
