Helopora

via iDigBio · CC0 · via iDigBio. 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
- ArthrostylidaePBDB
- Diet
- suspension feederPBDB, for Stenolaemata
- Life habit
- epifaunalPBDB, for Bryozoa
- Motility
- stationary, attachedPBDB, for Stenolaemata
- Vision
- blindPBDB, for Stenolaemata
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At least 70 million years on record.
The record covers at least 458.2 Mya to 387.95 Mya. No occurrence read is dated outside 471.3 Mya to 382.31 Mya.
114 occurrences of Helopora on record, most of them in the Silurian. 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
114 occurrences- Ordovician39%
- Silurian49%
- Devonian12%
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
34 formations
- Silica Formation · Traverse Group14
- Sodus Formation · Clinton Group13
- Furnaceville Formation · Clinton Group8
- Reynales Formation · Clinton Group6
- Holston Formation5
- Bear Creek Formation · Clinton Group4
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The named rock units Helopora has been recovered from, largest first. Drawn where the rock is now, not where it formed. 10 further formations hold fewer occurrences each and are not listed. 25 occurrences have no formation on record, which is common for older literature.
Helopora and its relatives
SilurianWhere Helopora and its relatives were recorded in the Silurian.
Found in the same rock
1,160 taxa- Phaenopora ensiformis33 sites
- Zygobolba33 sites
- Coelospira hemispherica32 sites
- Strophodonta corrugata27 sites
- Tentaculites26 sites
- Leperditia20 sites
- Pterinea19 sites
- Favosites17 sites
- Zygospira17 sites
- Ctenodonta16 sites
- Phaenopora16 sites
- Rafinesquina16 sites
- Tetradium16 sites
- Rhipidomella15 sites
- Sowerbyella15 sites
- Strophomena15 sites
- Homotrypa14 sites
- Isotelus14 sites
- Lophospira14 sites
- Encrinurus13 sites
- Pachydictya13 sites
- Rhynchotreta13 sites
- Hederella12 sites
- Mucrospirifer12 sites
The Paleobiology Database records 105 sites for Helopora, 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
30 references- The Clinton of Western and Central New York35
- Zonation of the Middle and Upper Ordovician strata in northwestern Georgia14
- Strata and megafossils of the Middle Devonian Silica Formation9
- A trilobite zonation of Middle Ordovician rocks, southwestern District of Mackenzie5
- Community paleoecological study of the Silica Shale equivalent of northeastern Indiana4
- Ordovician megafauna, Melville Peninsula, southeastern District of Franklin4
- Major Middle Ordovician reef tract in East Tennessee4
- Upper Llandovery fossil associations in the Pentland HIlls, Scotland3
- Oporniih razrez reki Moiero silura Sibirskoi platformih -The Silurian composit section of the Moiero River (Sibirian platform)3
- Ziegler, 19713
- Pre-Chattanooga stratigraphy in Central Tennessee3
- The fossil fauna of the Ordovician in the Cincinnati Region3
Each of the 114 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. 18 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 Helopora
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itArthrostylidae through timeFormations of the SilurianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Hall 1851