Pipidae
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annotated classification
- In frog and toad: Annotated classification
Family Pipidae (tongueless frogs) Cretaceous (145.5 million–65.5 million years ago) to present; 6 to 8 presacral vertebrae; ribs present and free in larvae, but fused to transverse processes of vertebrae in adults; coccyx fused to sacrum or free and monocondylar (i.e., with 1 articulation); tongue absent;…
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habitat
- In frog and toad: Size range and diversity of structure
…seen in the aquatic family Pipidae. Members of that family normally never leave the water. In regions of the Earth subjected to long dry periods, frogs must seek cover to avoid desiccation; they have behavioral and structural adaptations to conserve water.
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propulsion
- In amphibian: Anurans
The pipids, specialized for their aquatic environment, have little flexibility in their axial skeletons and instead propel their flat, fused bodies through the water with powerful hind limbs and large, fully webbed feet.
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