Dipleurula, definition, [605];

forms of, [605]-[608]

Diplocyathus, [277]

Diplodal, [210]

Diplodemia, [223]

Diploëpora, [346]

Diplograptus, [281], [282]

Diplomita, [111]

Diplopore, [597], [599]

Diploporita, [598], [599]