revealing opabinia: its anatomy and ecological niche in the cambrian sea

adaptations anatomical anatomy ancient aquatic arthropods biodiversity biological biology body cambrian complex creatures cutaway design details early ecosystem ecosystems education educational engaging environment evolution evolutionary exploration explosion eyes fascinating features feeding five forms fossil fossilized graphics history illustrative infographic informational learning life marine mechanisms natural ocean opabinia paleontology period predator prehistoric proboscis remains role scientific segmented significance studies study tool unique view visual visuals