Summary ²

The tailed frogs are two species of frogs in the genus Ascaphus, the only taxon in the family Ascaphidae /æˈskæfɪdiː/. The "tail" in the name is actually an extension of the male cloaca. The tail is one of two distinctive anatomical features adapting the species to life in fast-flowing streams. These are the only North American frog species that reproduce by internal fertilization.

Sources and Credits

1. (c) Tony Iwane, some rights reserved (CC BY-NC), uploaded by Tony Iwane
2. (c) Wikipedia, some rights reserved (CC BY-SA), https://en.wikipedia.org/wiki/Ascaphus_truei

More Info

• iNat taxon page
• AMNH Amphibian Species of the World
• AmphibiaWeb
• Animal Diversity Web
• Biodiversity Heritage Library
• BOLD Systems BIN search
• CalPhotos
• Global Biodiversity Information Facility (GBIF)
• HerpMapper
• NatureServe Explorer 2.0
• VertNet

iNat Map