''Heliolites'' is a large and heterogenous
genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of extinct
tabulate corals in the family
Heliolitidae.
Specimens have been found in
Ordovician
The Ordovician ( ) is a geologic period and System (geology), system, the second of six periods of the Paleozoic Era (geology), Era, and the second of twelve periods of the Phanerozoic Eon (geology), Eon. The Ordovician spans 41.6 million years f ...
to
Devonian
The Devonian ( ) is a period (geology), geologic period and system (stratigraphy), system of the Paleozoic era (geology), era during the Phanerozoic eon (geology), eon, spanning 60.3 million years from the end of the preceding Silurian per ...
beds in North America,
Europe,
Africa,
Asia,
and Australia.
The genus is particularly abundant in the Wellin Member of the
Hanonet Formation of Belgium.
Members of the genus are distinguished by a prominent tubular
coenenchyme (the tissue linking neighboring polyps) with 14–17 tubules around each
corallite
A corallite is the skeletal cup, formed by an individual stony coral polyp, in which the polyp sits and into which it can retract. The cup is composed of aragonite, a crystalline form of calcium carbonate, and is secreted by the polyp. Corallit ...
(the stony cup in which each polyp sits.)
References
Silurian cnidarians
Tabulata
Prehistoric cnidarian genera
Fossil taxa described in 1846
Paleozoic invertebrates of Europe
Paleozoic invertebrates of Oceania
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