<I>Paraorthograptus kimi</I> (IMAGE)

University at Buffalo

<I>Paraorthograptus kimi</I>

Caption

A microscope image of a colony of Paraorthograptus kimi, a doomed species of deep-water graptolite. Once common, this species was among those that disappeared during the end-Ordovician mass extinction. Each colony consists of a chain of tubes that make up a communal edifice, and each tube housed an individual graptolite animal.

Credit

Credit: Michael Melchin

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