Protochelydra zangerli is an extinct species of chelydid in the extinct genus Protochelydra of Chelydridae.[1][2]
References
- ^ Erickson, B. R. (1973). "A new chelydrid turtle Protochelydra zangerli from the late Paleocene of North America". Sci. Publ. Sci. Mus. Minn. N.S. 2 (2): 1–16.
- ^ Danilov, G.; Parham, J. F. (2008). "A reassessment of some poorly known turtles from the Middle Jurassic of China, with comments on the antiquity of extant turtles" (PDF). Journal of Vertebrate Paleontology. 28 (2): 306–318. doi:10.1671/0272-4634(2008)28[306:AROSPK]2.0.CO;2.
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