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CT scan of the skull of a Gastrotheca guentheri frog
A computerized tomography scan of the skull of the large marsupial frog Gastrotheca guentheri revealed (and was later confirmed through dissection) what appear to be identical rows of teeth on both the upper and lower jaws. This confirmation makes G. guentheri the only species of frog, out of the more than 7,000 living today, with true teeth on its lower jaw.
[Research supported by U.S. National Science Foundation grants DGE 1315138, DGE 1842473 and DBI 1701714.]
Learn more in the Florida Museum news story Underbite regained: Species feared extinct is the only frog with true teeth on its lower jaw. (Date of image: 2021; date originally posted to NSF Multimedia Gallery: Nov. 12, 2022)
Credit: Daniel Paluh, Florida Museum of Natural History
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