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Chirality (shell-coiling direction)

The directional bias in the spiral growth of foraminifera shells, either left-handed (*sinistral*) or right-handed (*dextral*), which can dominate entire species populations and flip suddenly in the fossil record.

Catégorie : Sciences

Articles liés (1)

Why Do These Fossil Shells Flip Their Spirals Every Few Millennia?

The mystery of the flipping foraminifera may conceal a rarely observed evolutionary process playing out across the planet. The post Why Do These Fossil Shells Flip Their Spirals Every Few Millennia? first appeared on Quanta Magazine

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