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Adult male Coastal Tailed Frog (Ascaphus truei) at streamside I had only seen this species once before, many years ago, in this same location. I was looking hard for them around the edges of a stream and found two small individuals. While photographing those, this large adult male came hopping by. These frogs have the most ancient lineage of all frogs, with the possible exception of certain New Zealand species. Ascaphus truei,Coastal Tailed Frog,Geotagged,Summer,United States Click/tap to enlarge PromotedSpecies introCountry intro

Adult male Coastal Tailed Frog (Ascaphus truei) at streamside

I had only seen this species once before, many years ago, in this same location. I was looking hard for them around the edges of a stream and found two small individuals. While photographing those, this large adult male came hopping by. These frogs have the most ancient lineage of all frogs, with the possible exception of certain New Zealand species.

    comments (2)

  1. View erinmoore's profile
    erinmoore
    Grizzly Bear
    View Grizzly Bear class
    The most ancient lineage! What a beautiful individual too, so perfect in every respect. Here's to a future of fast-moving streams. Posted 4 years ago
    1. View John Sullivan's profile
      John Sullivan
      Lion
      View Lion class
      Thanks -- I'll drink to that! Posted 4 years ago

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The Coastal Tailed Frog

Ascaphus truei is one of two species of frogs in the genus Ascaphus, the only taxon in the family Ascaphidae. 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.

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Similar species: Frogs
Species identified by John Sullivan
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By John Sullivan

All rights reserved
Uploaded Sep 17, 2020. Captured Sep 8, 2020 13:09 in Gold Bluffs Beach, Orick, CA 95555, USA.
country flag of United States of America Explore United States of America 39,926 9,640 8
  • PENTAX K-3 II
  • f/10.0
  • 1/50s
  • ISO1600
  • 100mm
Captured in the summer. More summer photos.