There are no plant fossils. We can only find animal fossils. (X) - The text mentions finding fossils of trees and plants.
A fossil can be a print of a plant or an animal body. (✓) - The text states: "The bodies of these animals and plants, or prints of their bodies, are preserved in rocks."
Trilobites were sea animals that lived many, many years ago. (✓) - The text states: "I've also got lots of trilobites and ammonites - two kinds of sea animals that lived millions of years ago...".
Millions of years ago, Alnif was under the sea. (✓) - The text states: "...when this part of Morocco was under the sea."
Rachid has a fossil of a dinosaur in his collection. (X) - Rachid states: "One day I want to find a fossil of a dinosaur," implying he hasn't found one yet.