Solar stars - yesterday and today. Left: the fossil Plesiosolaster moretoni, 170 million years old. Right: Heliaster helianthus, which occurs today in the Pacific Ocean.
Philipp Zinniker
Starfish - yesterday and today. Top left: Marthasterias glacialis, which lives in the Atlantic and Mediterranean. Below: The fossilisation of Argoviaster occultus.
Philipp Zinniker