Anne Stokes, special to the Placer Herald
Colin Stark of Roseville, 8, examines Camarasaurus bones at Sierra College's fossil prep laboratory during the Natural History Museum's open house on Saturday.
Anne Stokes, special to the Placer Herald
Hannah Austin, 8, left, and Alia Brown, 9, of Rocklin get hands-on with a model dinosaur at the Sierra College Natural History Museum open house on Saturday.
Anne Stokes, special to the Placer Herald
Logan Swanson of Sacramento, 6, and Grandfather Sergio Argan get an up-close look at a massive pine cone at the Sierra College Natural History Museum open house on Saturday.
Anne Stokes, special to the Placer Herald
Museum docent Anastazia McCarthy educates visitors at the touch table at Sierra College Natural History Museum open house on Saturday.
Anne Stokes, special to the Placer Herald
Cesar Carabez of Natomas, and son Diego, 3, take a tour of the Sierra College Natural History Museum during its open house on Saturday. Above them is Art the grey whale, one of the many specimens on display.
Anne Stokes, special to the Placer Herald
Noelle Cate of Sacramento, 7, takes an up-close look at sequoia tree needles at Sierra College Natural History Museum's open house on Saturday.
Anne Stokes, special to the Placer Herald
Cesar Carabez of Natomas, and son Diego, 3, examine the difference between human and chimpanzee skeletons at the Sierra College Natural History Museum's open house on Saturday.
Anne Stokes, special to the Placer Herald
Botany professor Shawna Martinez leads a nature trail tour on the Sierra College campus during the school's Natural History Museum's open house.
Courtesy/Rick Pappas
Docent Alexandra Stubblefield spent her day Saturday hosting mini-tours of the Sierra College Natural Museum Open House.