J. D. Dana. 1847. Descriptions of fossil shells of the collections of the exploring expedition under the command of Charles Wilkes, USN, obtained in Australia, from the lower layers of the coal formation in Illawarra, and from a deposit probably of nearly the same age at Harper's Hill, Valley of the Hunter. American Journal of Science and Arts, Second Series 4:151-160 [G. Webster/G. Webster/M. Clapham]