Starfish: rare fossil helps answer the mystery of how they evolved arms

New study sheds light on how the starfish evolved.

Fossils provide unprecedented clues to the origins of the starfish

Secret life of a starfish – DW – 07/24/2017

Six Armed Starfish Fossil

Pittwater Online News

Revue du web. Agée de plus de 480 millions d'années, la plus ancienne étoile de mer découverte au Maroc

Starfish – News, Research and Analysis – The Conversation – page 1

Eons, How the Starfish Got Its Arms, Season 4, Episode 5

Secret life of starfish – Deposits Mag

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Starfish: Rare fossil helps answer the mystery of how they evolved

So Many Arms! How Octopuses Avoid Tying Themselves in Knots

Six Armed Starfish Fossil