Heterotrypa
Searched as Heterotrypa praenuntia simplex. The Paleobiology Database treats Heterotrypa as the accepted name.

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 most 7.7 million years on record.
Every occurrence read is dated to somewhere between 457.3 Mya and 449.6 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
2 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
2 occurrences- Ordovician100%
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
1 formation
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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.
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
1 referenceEach of the 2 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. Each entry links to the Paleobiology Database's own record for the work.
Media and terms
Media content1

Picture of Heterotrypa
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Heterotrypa 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 itHeterotrypidae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Nicholson 1879