Oldest preserved soft tissues in crinoids reveal tube feet anatomy and ecological insights
By
Cole, Selina R., Wright, David F., Ausich, William I., Cournoyer, Mario E.
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Summary
This article reports a significant paleontological discovery: the oldest evidence of soft-tissue preservation in crinoids (sea lilies), specifically tube feet from the echinoderm water vascular system. These preserved soft tissues reveal details about the anatomy, feeding mechanisms, and ecological roles of ancient crinoids that are typically lost during fossilization. The exceptional preservation provides new insights into the evolution and ecology of these marine organisms.
Key quotes
· 3 pulledThe fossil record is overwhelmingly dominated by biomineralized hard parts, but non-mineralized tissues may be preserved in rare cases.
By revealing details of soft tissues that are typically lost during the fossilization process, instances of exceptional preservation provide important windows into the anatomy, ecology and evolution of ancient organisms.
Tube feet are extensions of the echinoderm water vascular system that play essential roles in feeding and ecology in living crinoids.
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