Heterotrypa

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
- HeterotrypidaePBDB
- Diet
- suspension feederPBDB
- Life habit
- intermediate-level epifaunalPBDB
- Motility
- stationary, attachedPBDB
- Vision
- blindPBDB, for Stenolaemata
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At least 44 million years on record.
The record covers at least 457.3 Mya to 413.02 Mya. No occurrence read is dated outside 471.3 Mya to 410.62 Mya.
111 occurrences of Heterotrypa on record, most of them in the Ordovician. 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
111 occurrences- Ordovician93%
- Silurian6%
- Devonianunder 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. More on what this infers.
Found in
40 formations
- Hermitage Formation15
- Waynesville Formation10
- Catheys Formation8
- Lexington Limestone Formation7
- Leipers Formation5
- Decorah Shale Formation5
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The named rock units Heterotrypa has been recovered from, largest first. Drawn where the rock is now, not where it formed. 16 further formations hold fewer occurrences each and are not listed. 18 occurrences have no formation on record, which is common for older literature.
Heterotrypa and its relatives
OrdovicianWhere Heterotrypa and its relatives were recorded in the Ordovician.
Found in the same rock
767 taxa- Homotrypa37 sites
- Hallopora35 sites
- Eridotrypa27 sites
- Prasopora26 sites
- Amplexopora24 sites
- Peronopora24 sites
- Constellaria22 sites
- Escharopora21 sites
- Platystrophia21 sites
- Zygospira19 sites
- Atactoporella15 sites
- Batostoma15 sites
- Hebertella frankfortensis15 sites
- Ambonychia14 sites
- Anazyga recurvirostra14 sites
- Bythopora14 sites
- Flexicalymene14 sites
- Rafinesquina14 sites
- Ceramoporella13 sites
- Eridotrypa mutabilis13 sites
- Rafinesquina alternata13 sites
- Graptodictya12 sites
- Hebertella sinuata12 sites
- Monticulipora12 sites
The Paleobiology Database records 74 sites for Heterotrypa, 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
33 references- Pre-Chattanooga stratigraphy in Central Tennessee18
- Bryozoa from Rocklandian (Middle Ordovician) rocks of the Upper Mississippi Valley region15
- Systematic paleontology, biostratigraphy, and paleoecology of Middle Ordovician Bryozoa (Trepostomata) from the Hermitage Formation of east-central Tennessee13
- Zonation of the Middle and Upper Ordovician strata in northwestern Georgia12
- Lithostratigraphy and depositional environments of the Lexington Limestone (Ordovician) of central Kentucky9
- Some Waynesville and Liberty Bryozoa from Versailles, Ripley County, Indiana9
- The fossil fauna of the Ordovician in the Cincinnati Region4
- Upper Ordovician bryozoa from the Montagne de Noire, Southern France2
- Silurian and Lower Devonian brachiopod and bryozoan communities of southwestern Byelorussia2
- The paleoecology of a Late Ordovician shale unit from southwest Ohio and southeastern Indiana2
- Stromatoporaty i biostratigrafiya nizhnego paleozoya Mongolii [Stromatoporata and biostratigraphy of the Lower Paleozoic of Mongolia]2
- Geology of the Bristol and Wallace quadrangles, Virginia2
Each of the 111 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. 21 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 Heterotrypa
- 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 itHeterotrypidae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Nicholson 1879