Cristina Banfi graduated in Natural Sciences from the University of Milan and has taught at various schools. For over 20 years, she has been working in scientific communication and teaching through play for children.

Rossella Trionfetti earned her high-school certificate in Applied Art and proceeded to specialize in the field of illustration. She currently works as a children's illustrator, also collaborating in the creation of apps and interactive games.

Nature never ceases to amaze us, especially in the animal kingdom! In this book, children will be able to follow the adventures of an intrepid explorer through his research, which has brought him face to face with some of the most bizarre extinct animals in the world. Young readers will discover that our planet was once inhabited by armadillos the size of a car, rhinoceroses without horns as tall as a giraffe, and elephants no bigger than a sheep. A fact box for each animal provides its scientific name, period in which it lived, its diet, size, when it disappeared, and why.