Polished Agatized Paleozoic Horn Corals from Utah

Tetracoralla or Horn Coral

Phylum Cnidaria, Class Anthozoa, Subclass Zoantharia, Order Rugosa

Geological Time: Carboniferous

Size: The polished surfaces range from 1 3/16 to 1 ¼ in diameter.

Fossil Site: Northern Utah

Fossil Code: PFO418

Price: $55.00

Description: The Rugosa, also called the Tetracoralla, are an extinct order of coral that were abundant in Middle Ordovician to Late Permian oceans. Much like petrified wood, these polished horn coral from Utah are beautifully colored and show the cellular structure in minute detail.

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