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Plegiocidaris coronata

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description Plegiocidaris coronata Overview

Plegiocidaris coronata is an extinct species of cidaroid sea urchin known from Jurassic fossils. It belongs to the genus Plegiocidaris within the echinoid order Cidaroida, a group characterized by robust test plates and large primary spines. Museum and paleontological databases place the species in the Mesozoic fossil record, with records including the Middle to Upper Jurassic. It is studied as a fossil echinoderm rather than as a living marine species.

help Plegiocidaris coronata FAQ

What is Plegiocidaris coronata?

Plegiocidaris coronata is an extinct species of cidaroid sea urchin known from Jurassic fossils. It belongs to the genus Plegiocidaris and the echinoid order Cidaroida.

When did Plegiocidaris coronata live?

The species is known from the Jurassic Period. Its age is established through fossil deposits rather than observations of living animals.

What are cidaroid sea urchins known for?

Cidaroids are characterized by robust test plates and large primary spines. These features distinguish the group from many other echinoid sea urchins.

Can Plegiocidaris coronata be found alive today?

No. Plegiocidaris coronata is an extinct fossil species. Modern cidaroid sea urchins belong to the same broader order, Cidaroida, but are not this species.

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