Hexacorallia
Hexacorallia is a class of Anthozoa.

Nhobgood Nick Hobgood · CC BY-SA 3.0 · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Sits inside
- AnthozoaPBDB
- Diet
- microcarnivorePBDB, for Anthozoa
- Life habit
- intermediate-level epifaunalPBDB, for Anthozoa
- Motility
- stationary, attachedPBDB, for Anthozoa
- Vision
- blindPBDB, for Anthozoa
Time the record covers
At least 458 million years on record.
The record covers at least 458.2 Mya to 129 ka. No occurrence read is dated outside 486.85 Mya to 0 Mya.
12,000+ occurrences of Hexacorallia on record. The Paleobiology Database records this as a living group. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
12,000 occurrences read- Ordovician5%
- Silurian12%
- Devonian20%
- Carboniferous11%
- Permian2%
- Middle Triassicunder 1%
- Late Triassic8%
- Early Jurassic2%
- Middle Jurassic4%
- Late Jurassic13%
- Early Cretaceous3%
- Late Cretaceous5%
- Paleocene1%
- Eocene3%
- Oligocene2%
- Miocene5%
- Pliocene1%
- Pleistocene1%
- Holoceneunder 1%
These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. The read hit its cap, so every figure above is a floor and the shares are of the occurrences read. More on what this infers.
Found in
at least 845 formations
- Korallenoolith Formation180
- Cassian Formation161
- Onondaga Formation159
- Zlambach Formation143
- High Tor Limestone Formation125
- Stramberk Limestone Formation125
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The named rock units Hexacorallia has been recovered from, largest first. Drawn where the rock is now, not where it formed. The read hit its cap, so each count is a floor. 821 further formations hold fewer occurrences each and are not listed. 3,134 occurrences have no formation on record, which is common for older literature.
Found in the same rock
2,114 taxa- Crinoidea88 sites
- Bryozoa50 sites
- Rugosa50 sites
- Leptaena40 sites
- Atrypa37 sites
- Fenestella36 sites
- Rhombopora35 sites
- Rhipidomella34 sites
- Punctospirifer32 sites
- Favosites31 sites
- Brachiopoda30 sites
- Gastropoda30 sites
- Platyceras30 sites
- Spirifer28 sites
- Ostracoda26 sites
- Bivalvia25 sites
- Schuchertella25 sites
- Archaeogastropoda24 sites
- Platystrophia23 sites
- Crurithyris22 sites
- Lophophyllidium22 sites
- Tabulata22 sites
- Cheilotrypa21 sites
- Echinoidea21 sites
The Paleobiology Database records at least 906 sites for Hexacorallia, and this reads 240 of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
at least 719 references- The distribution of rugose corals in Frasnian outcrop sequences of North America267
- Correlation of the Silurian rocks of China198
- Les scléractiniaires du Jurassique supérieur de la Dobrogea centrale, Roumanie181
- Triassic Corals of the Zlambach Beds, Northern Calcareous Alps, Austria177
- Beiträge zur Korallenfauna des Stramberger Tithon174
- Coraux crétacés de Bohême (Cénomanien supérieur; Turonien inférieur - Coniacien inférieur), République tchèque159
- Carbonate deposition in accretionary prism settings: Early Miocene coral limestones and corals of the Makran Mountain Range in southern Iran150
- Silurian and Devonian Corals of the Falls of the Ohio150
- Die oberjurassische Korallenfauna von Württemberg139
- Zooxanthellate scleractinian corals of the Bowden shell bed, Southeast Jamaica132
- Fossil associations in the High Tor Limestone (Lower Carboniferous) of South Wales125
- pers. comm.123
Each of the 12,000 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. That read hit its cap, so each count is a floor. 707 further references are not listed. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content2
Picture of Hexacorallia
- Source
- Wikipedia/Commons
- Credit
- Nhobgood Nick Hobgood
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
3D model
- Source
- Sketchfab
- Licence
- CC Attribution-NonCommercial-ShareAlike
- Commercial use
- the licence does not allow it
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itAnthozoa through timeThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Haeckel 1866)