Holbrookia maculata, commonly known as the lesser earless lizard, is a species of lizard in the family Phrynosomatidae. The species is native to the southwestern and central United States and northern Mexico. There are eight recognized subspecies.

Mary Cynthia Dickerson was an American herpetologist and the first curator of herpetology at the American Museum of Natural History, as well as the first curator in the now defunct department of Woods and Forestry. For ten years she was the editor of The American Museum Journal, which was renamed Natural History during her editorship. She published two books: Moths and Butterflies (1901) and The Frog Book (1906) as well as numerous popular and scientific articles. She described over 20 species of reptiles and is commemorated in the scientific names of four lizards.