Calceola sandalina, Linnaeus (1771)
Specimen of ± 4 x 3 cm, complete.
- Calceola sandalina is a type of horn coral, sometimes called slipper coral. Horn corals are an extinct order of corals called Rugosa. Rough means wrinkled. The fossil is the skeleton of the coral animal or polyp. When alive, horn corals had a flower-like appearance. They belong to the phylum called cnidaria and are related to jellyfish.
Middle Devonian, Silica Formation
Sylvani, Lucas County-Ohio, USA
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