dorsal closeup on an adult of the rare californian scott barr salamander plethodon asupak

amphibia amphibian chordata caudata hightonia nature north american plethodon asupak plethodontidae salamander scott bar river drainage siskiyou county usa animal biology california closeup endangered endemic herpetology lungless macro newt outdoors predator single tailed urodela vertebrate wild wildlife wood zoology dorsal adult rare californian barr laying rock