This is a series of speed-paintings of sauropod herds. From top to bottom:

Alamosaurus sanjuanensis, and large titanosaur from the Late Cretaceous of North America

Amargasaurus cazaui, from the Early Cretaceous of South America

The dwarf sauropod Europasaurus holgeri from the Late Jurassic of Germany

Camarasaurus lentus from the Late Jurassic of North America

Euhelopus zdanskyi from the Early Cretaceous of China

Barosaurus lentus from the Late Jurassic of Africa

Mamenchisaurus hochuanensis from the Late Jurassic of China

Haplocanthosaurus delfsi from the Late Jurassic of North America

Nigersaurus taqueti from the Early Cretaceous of Africa.