The recommended age is - probably because of the number of parts - in 6 years. I appear but many puzzles with fewer parts more difficult - for example, if the entire the background is kept in a shade or just a subject is displayed in a color.
The puzzle pieces are quite large (> 4 cm), very accurately (without any "demolition points") and act indestructible. I highly recommend this puzzle. However, the T-Rex looks a bit frightening. The child should be like "realistic" pictures of Dinos ...