Trochocyathus
Trochocyathus is a genus of corals in the family Caryophylliidae. Living species are found in waters near Hawai'i at depths of 64 to 1,020 meters. Fossil species are found as far back as the latest Paleocene in the Dilwyn Formation of Australia, in the late Cretaceous in the Woodbury Formation of New Jersey, and in Suffolk.

Chillibilli · CC BY-SA 4.0 · 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
- CaryophylliidaePBDB
- Diet
- microcarnivorePBDB
- Life habit
- low-level epifaunalPBDB
- Motility
- stationary, attachedPBDB
- Vision
- blindPBDB, for Anthozoa
- Environment
- marinePBDB, for Scleractinia
Time the record covers
At least 201 million years on record.
The record covers at least 201.4 Mya to 129 ka. No occurrence read is dated outside 205.7 Mya to 11.7 ka.
363 occurrences of Trochocyathus on record, most of them in the Eocene. 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
363 occurrences- Late Triassicunder 1%
- Early Jurassicunder 1%
- Middle Jurassic1%
- Late Jurassic3%
- Early Cretaceous10%
- Late Cretaceous21%
- Paleocene12%
- Eocene24%
- Oligocene7%
- Miocene17%
- Pliocene2%
- Pleistocene2%
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. More on what this infers.
Found in
98 formations
- Llajas Formation23
- Termofourà Formation12
- Grès verts helvétiques Formation7
- Kincaid Formation · Midway Group7
- Gurabo Formation6
- Wills Point Formation · Midway Group6
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The named rock units Trochocyathus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 74 further formations hold fewer occurrences each and are not listed. 158 occurrences have no formation on record, which is common for older literature.
Trochocyathus and its relatives
EoceneWhere Trochocyathus and its relatives were recorded in the Eocene.
Found in the same rock
2,593 taxa- Nemocardium (Nemocardium) linteum15 sites
- Gastropoda14 sites
- Eocernina hannibali13 sites
- Inoceramus11 sites
- Nucula11 sites
- Turritella11 sites
- Bivalvia10 sites
- Ectinochilus (Macilentos) macilentus10 sites
- Pycnodonte10 sites
- Corbula9 sites
- Dentalium9 sites
- Dentalium stentor9 sites
- Lucina9 sites
- Ostrea9 sites
- Caryophyllia8 sites
- Echinoidea8 sites
- Hemiaster8 sites
- Nuculana8 sites
- Pachycrommium clarki8 sites
- Serpula8 sites
- Cerithium7 sites
- Conus7 sites
- Cucullaea7 sites
- Desmophyllum7 sites
The Paleobiology Database records 152 sites for Trochocyathus, and this reads all 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
124 references- Recherches sur les Madreporaires et les formations recifales Miocenes de la Mediterranee occidentale [Miocene corals and reefs from the western Mediterranean]25
- Megapaleontology of the Eocene Llajas Formation, Simi Valley, California20
- Corals of the Cretaceous of the Atlantic and Gulf Coastal Plains and Western Interior of the United States18
- Magyarorszagi Oligocen korallok [Oligocene corals from Hungary]15
- Monographie des madreporaires fossiles de Madagascar [Monograph of fossil corals from Madagascar]14
- Neogene paleontology in the northern Dominican Republic, 5. The suborders Caryophylliina and Dendrophylliina (Anthozoa, Scleractinia)10
- Taxonomic opinions on Cretaceous corals8
- Tethyan Albian corals, Cerro de Cristo Rey Uplift, Chihuahua and New Mexico8
- Kuzmicheva, 19878
- Sind fossil corals and Alcyonaria8
- Les grès verts helvétiques (Aptien moyen-Albien supérieur) de Haute-Savoie, Valais et Vaud (Alpes occidentales franco-suisses)7
- The paleoecology of the Cenomanian-Turonian (Cretaceous) stage boundary extinctions at Black Mesa, Arizona7
Each of the 363 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. 112 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 content1
Picture of Trochocyathus
- Source
- Wikipedia/Commons
- Credit
- Chillibilli
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan of Trochocyathus was found in Sketchfab.
Smithsonian Open Access and MorphoSource were 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 itCaryophylliidae through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Milne-Edwards and Haime 1848