GRANT-MACKIE, J.A. & YAMAKITA, S. & MATSUMOTO, T. & HORI, R.S. & TAKEMURA, A. & AITA, Y. & TAKAHASHI, S. & CAMPBELL, H.J. (2014)
A probable shark dorsal fin spine fragment from the Early Triassic of the Arrow Rocks sequence, Whangaroa, northern New Zealand. New Zealand Journal of Geology and Geophysics, 57 (3): 295–299
DOI: 10.1080/00288306.2014.889722