Halysites — Halysites
Halysites Wilson44691, Wikimedia Commons, Public domain (US)

Coral

Halysites

Chain coral

Halysites is the Silurian tabulate 'chain coral' whose corallites link in wavy chains that look like a chain-link fence in cross-section; it is found in the Niagaran reefs of Indiana, Wisconsin, Ontario and the Wenlock of England. Polished sections make attractive displays. It disappeared at the end of the Silurian.

PhylumCnidaria
ClassAnthozoa
OrderHalysitida
FamilyHalysitidae
GroupCoral
Rank (PBDB)genus· Paleobiology Database
Authorvon Waldheim 1813· Paleobiology Database
Classification (PBDB)Cnidaria › Anthozoa › Halysitida › Halysitidae· Paleobiology Database
Range (PBDB)471–413 Ma· Paleobiology Database
PBDB occurrences352· Paleobiology Database

Elsewhere

Cite this article

Stratum Study. "Halysites" (Taxon). Stratum Study pack 2026.09, as of 2026-09-19. https://stratum.black/study/taxa/halysites. Accessed 2026-09-20.

@misc{stratum-halysites,
  title        = {Halysites},
  author       = {{Stratum Study}},
  howpublished = {\url{https://stratum.black/study/taxa/halysites}},
  year         = {2026},
  note         = {Taxon article, Stratum Study pack 2026.09, as of 2026-09-19; sources: stratum, pbdb, wikidata, commons. Accessed 2026-09-20.}
}

Citations carry the pack version and the article's as-of date so they resolve to the same text later. The facts themselves belong to the sources listed below; cite those for the science.