![Late Cretaceous dinoflagellates diagram.](http://static.sciencelearn.org.nz/images/images/000/001/803/full/Late-Cretaceous-dinoflagellates20160826-15711-trwlzc.jpg?1674166893)
The times when dinoflagellates appeared and became extinct have been dated in deep-sea cores around the world. Their presence is used to date rocks containing dinosaur fossils at Mangahouanga.
The times when dinoflagellates appeared and became extinct have been dated in deep-sea cores around the world. Their presence is used to date rocks containing dinosaur fossils at Mangahouanga.