Heliophyllum

Heliophyllum is an extinct genus of corals that existed predominantly in the Devonian. Heliophyllum is of the order Rugosa and can be referred to as horn corals.^[1][2] They were mostly solitary animals, although some were colonial.^[1] The genus had a wide distribution. Fossils of H. halli have been found in the fossil rich Floresta Formation of the Altiplano Cundiboyacense, Colombia.^[3] This genus used its nematocysts to stun prey.

Heliophyllum Temporal range: Mid Devonian ~392–376 Ma PreꞒ Ꞓ O S D C P T J K Pg N
H. halli; Centerfield Limestone Member (Middle Devonian), Bethany Center, New York
Scientific classification
Kingdom:	Animalia
Phylum:	Cnidaria
Subphylum:	Anthozoa
Class:	†Rugosa
Family:	†Zaphrentidae
Genus:	†Heliophyllum Hall 1846
Species
H. canadense H. damesianum H. dianthus H. halli H. truncatum