(en) Richard N. Holdaway et Trevor H. Worthy, « A reappraisal of the late Quaternary fossil vertebrates of Pyramid Valley Swamp, North Canterbury, New Zealand », New Zealand Journal of Zoology, vol. 24, no 1, , p. 69–121 (DOI10.1080/03014223.1997.9518107, lire en ligne)
rsnz.org
(en) Richard N. Holdaway et Trevor H. Worthy, « A reappraisal of the late Quaternary fossil vertebrates of Pyramid Valley Swamp, North Canterbury, New Zealand », New Zealand Journal of Zoology, vol. 24, no 1, , p. 69–121 (DOI10.1080/03014223.1997.9518107, lire en ligne)