Introduce paleontology to young children with 12 beautiful picture cards and matching x-rays! Lay the x-rays over the picture cards to see the bodies from the inside out! The guide describes where and when the animals lived, what they ate and how big they grew. This product promotes.  Exploration, Concentration, Creativity. This set features: 12 picture cards, 19 x 23 cm, 12 x-rays up to 19.5 x 25 cm and guide.