A school of small-bodied ipsipterygians ("fish lizards") of the species Grippia longirostris hunt squid-like ammonoids (top left). The marine amphibian Aphaneramma captures the bony fish Bobastrania (foreground). The giant ichthyosaur Cymbospondylus lurks in the depths (bottom right). Credit: Robert Back

A school of small-bodied ipsipterygians ("fish lizards") of the species Grippia longirostris hunt squid-like ammonoids (top left). The marine amphibian Aphaneramma captures the bony fish Bobastrania (foreground). The giant ichthyosaur Cymbospondylus lurks in the depths (bottom right). Credit: Robert Back

A school of small-bodied ipsipterygians ("fish lizards") of the species Grippia longirostris hunt squid-like ammonoids (top left). The marine amphibian Aphaneramma captures the bony fish Bobastrania (foreground). The giant ichthyosaur Cymbospondylus lurks in the depths (bottom right). Credit: Robert Back