THE EVOLUTION LILY

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Artist's Description

Crinoids are marine animals that make up the class Crinoidea of the echinoderms. Crinoidea comes from Greek ‘krinon’ meaning “a lily” and ‘eidos’ ~ “form”.

Strictly speaking ~ ‘sea lily’ refers to crinoids which in their adult form are ‘attached’ to the sea bottom by a stalk. ‘Feather-stars’ refer to the ‘unstalked’ free-moving form. The earliest known group of ‘sealilies’ date back to the Ordovician period ~ some 443 million years ago.

Through abrupt adaptive radiation and a selective mass extinction ~ Triassic radiation resulted in forms ‘possessing flexible’ arms to become widespread ~ motility in response to fleeing predators also became more prevalent.
These changes demonstrate how well the echinoderms have adapted to continue their filter-feeding strategy.

Artwork Comments

  • Darlene Lankford Honeycutt
  • NICK COBURN PHILLIPS
desktop tablet-landscape content-width tablet-portrait workstream-4-across phone-landscape phone-portrait
desktop tablet-landscape content-width tablet-portrait workstream-4-across phone-landscape phone-portrait

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