Hallopora: Quick Facts

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Hallopora elegantula, middle Silurian in age, collected from the Rochester Shale, Lockport, N.Y.

Illustration of an early Silurian coral-stromatoporoid community showing various labeled marine organisms, including corals, bryozoans, brachiopods, crinoids, trilobites, and a nautiloid, arranged on and around a block of seafloor substrate with a scale bar indicating centimeters.

Silurian Pentamerus community

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