Protochelydra Explained

Protochelydra zangerli is an extinct species of chelydid in the extinct genus Protochelydra of Chelydridae.^{[1] [2]}

Notes and References

1. 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 .
2. Danilov . G. . J. F. . Parham . 2008 . A reassessment of some poorly known turtles from the Middle Jurassic of China, with comments on the antiquity of extant turtles . Journal of Vertebrate Paleontology . 28 . 2 . 306–318 . 10.1671/0272-4634(2008)28[306:AROSPK]2.0.CO;2 .