Trans. and Proc. R. Soc. Victoria, xxiii. 1887, p. 187, and Tr. R. Soc. Victoria, iv. 1895, p. 1.
Tr. Zool. Soc. xiii. 1895, p. 223.
Zittel, Text Book of Palaeontology (Eng. Trans.), 1900, p. 257 (Bryozoa, by E. O. Ulrich).
Paléontologie Française. Terrains Crétacés, tome v., Bryozoaires, 8vo. Paris, 1850-1851. This great work refers, however, to recent as well as to fossil species.
Heteropora, of which recent species exist, is placed by Dr. Gregory in the Trepostomata.