The Rock horned lizard, or Ditmar's horned lizard, is a phrynosoma found in Sonora in northern Mexico, south of the Arizona border. Bearing the shortest horns of all the horned lizards, it lives in thorn-scrub and deciduous Sinaloan woodlands. The Rock horned lizard was "lost" to science for about 65 years. It has a unique habitat preference and limited distribution. It also has a very imprecise holotype locality record which made it difficult to locate. An...
