The early fossil record of amphibians and their ancestors is largely fragmentary, which makes it difficult to understand how frogs ... of the amphibian family tree.

The skull, described in a new study ... The latest finding, researchers say, fleshes out the amphibian family tree and helps narrow down how frogs, salamanders, and their relatives originated.

Note: Fossil skull of Kermitops; USNM PAL 407585, Department of Paleobiology, Smithsonian Institution. Note: Kermit the Frog puppet; 1994.0037.01, Gift of Jim Henson Productions. From the ...

It belongs to a lineage believed to have given rise to the three living branches of amphibians – frogs, salamanders and limbless caecilians. While only the skull – measuring around 1.2 inches ...