This easy reader for children reading at the fluency level recounts the story of a girl named Mary Ann Anning and her dog, Tray. They lived on the coast of England in the early 1800s, although the time frame is given only as “a long, long time ago.” Mary Ann and Tray became famous for their discoveries of fossils, including dinosaur bones. They discovered the first pterodactyl found in England, and the name was assigned to their fossil. The story focuses a little too much on the dog, and the title misses a great opportunity to completely acknowledge a girl accomplishing something important in the scientific world, especially in a much earlier era and without formal training or education. Despite this drawback, both Mary Ann and Tray are appealing characters and the discovery of the fossils and subsequent notice from scientists, collectors, and even royalty is appealing and well written. Sullivan’s illustrations provide intriguing period details in costumes, tools, and buildings, as well as a clever front endpaper of fossil-strewn ground covered with muddy paw prints. (Easy reader. 6-8)