Hexagonellidae

Not Hexagonellidae. This is Coscinotrypa cribriformis (Prout, 1859), a relative — both are Hexagonellidae.
Yale Peabody Museum · CC0 · via GBIF. 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
- HexagonellinaPBDB
- 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 210 million years on record.
The record covers at least 464.3 Mya to 254.14 Mya. No occurrence read is dated outside 471.3 Mya to 251.902 Mya.
342 occurrences of Hexagonellidae on record, most of them in the Permian. 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
342 occurrences- Ordovicianunder 1%
- Devonianunder 1%
- Carboniferous36%
- Permian63%
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
106 formations
- Bangor Limestone Formation29
- Edwardsville Formation18
- Wargal Formation · Zaluch Group15
- Chandalaz Formation12
- Copacabana Formation10
- Nerminskaya Formation8
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The named rock units Hexagonellidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 82 further formations hold fewer occurrences each and are not listed. 47 occurrences have no formation on record, which is common for older literature.
Hexagonellidae and its relatives
PermianWhere Hexagonellidae and its relatives were recorded in the Permian.
Found in the same rock
1,661 taxa- Fistulipora61 sites
- Fenestella51 sites
- Polypora50 sites
- Cleiothyridina40 sites
- Prismopora39 sites
- Rhabdomeson35 sites
- Rhombopora34 sites
- Echinoidea33 sites
- Eumetria31 sites
- Archimedes30 sites
- Meekopora30 sites
- Tabulipora30 sites
- Composita27 sites
- Pentremites27 sites
- Punctospirifer26 sites
- Torynifer26 sites
- Anthracospirifer leidyi25 sites
- Dichocrinus25 sites
- Meekopora prosseri25 sites
- Orthotetes23 sites
- Reticulariina23 sites
- Streblotrypa23 sites
- Thamniscus23 sites
- Crinoidea21 sites
The Paleobiology Database records 284 sites for Hexagonellidae, 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
102 references- The Paleontology and Paleoecology of the Lower Bangor Limestone (Chesterian, Mississippian)in northwestern Alabama29
- Morozova and Kruchinina, 198622
- Bryozoa16
- Community Organization, Paleontology, and Sedimentology of the Lower Mississippian Borden Delta Platform (Edwardsville Formation, Southern Indiana)15
- Productus Limestone Fossils, Part VI15
- Kiseleva, 198212
- Permian bryozoans from the Lihuirco-Quisuar Route near Abancay, Peru10
- Mshanki Pozdnei Permi9
- The geology of the Yarrol Region. Part 1. Biostratigraphy9
- Permian bryozoans from the exotic formations in Oman8
- Bryozoan fossils from the Mount Qomolangma Region7
- Upper Paleozoic bryozoans from the Lake Titicaca region, Bolivia, Part 1. Introductory remarks, stratigraphy and systematic paleontology6
Each of the 342 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. 90 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 Coscinotrypa cribriformis (Prout, 1859)
- Source
- GBIF
- Credit
- Yale Peabody Museum
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Hexagonellidae 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itHexagonellina through timeFormations of the PermianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Crockford 1947