After Ketchum & Benson, 2010
<==o †Leptocleididae White, 1940 |-- †Kaiwhekea katiki Cruickshank & Fordyce, 2002 `--+--+-- †Nichollssaura borealis (Druckenmiller & Russell, 2008) Druckenmiller & Russell, 2009 [Nichollsia borealis Druckenmiller & Russell, 2008 (preoccupied)] | `-- †Thililua longicollis Bardet, Suberbiola & Jalil, 2003 `--+-- †Brancasaurus brancai Wegner, 1914 `--+-- †Umoonasaurus demoscyllus Kear, Schroeder & Lee, 2006 `--o †Leptocleidus Andrews, 1922 [Peyerus Stromer, 1935] [Leptocleidinae] |-- †L. superstes Andrews, 1922 |-- †L. capensis (Andrews, 1911) Andrews, 1922 [Plesiosaurus capensis Andrews, 1911; Peyerus capensis (Andrews, 1911) Stromer, 1935] |-- †L. clemai Cruickshank & Long, 1997 `-- †L. sp. [South Australia, “Eric”]
Reference(s):
- Bardet, N., Suberbiola, X. P. & Jalil, N.-E., 2003: A new polycotylid plesiosaur from the Late Cretaceous (Turonian) of Morocco.
–Comptes Rendus de l'Académie des Sciencies, Paris: Palevol: Vol. 2, #5, pp. 307-315 [doi: http://dx.doi.org/10.1016/S1631-0683(03)00063-0] - Cruickshank, A. R. I. & Fordyce, R. E., 2002: A New Marine Reptile (Sauropterygia) from New Zealand: Further Evidence for A Late Cretaceous Austral Radiation of Cryptoclidid Plesiosaurs.
–Palaeontology: Vol. 45, #3, pp. 557-575 [doi: 10.1111/1475-4983.00249] - Kear, B. P., Schroeder, N. I. & Lee, M. S. Y., 2006: An archaic crested plesiosaur in opal from the Lower Cretaceous high-latitude deposits of Australia.
–Biology Letters: FirstCite Early Online Publishing (DOI: 10.1098/rsbl.2006.0504) [abstract only] - Ketchum, H. F. & Benson, R. B. J., 2010: Global interrelationships of Plesiosauria (Reptilia, Sauropterygia) and the pivotal role of taxon sampling in determining the outcome of phylogenetic analyses.
–Biological Reviews: Vol. 85, #2, pp. 361-392 [doi: 10.1111/j.1469-185X.2009.00107.x]