Hemiptychina
Searched as Hemiptychina warchensis pyriformis. The Paleobiology Database treats Hemiptychina as the accepted name.

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
- HemiptychininaePBDB
- Diet
- suspension feederPBDB, for Terebratulida
- Life habit
- low-level epifaunalPBDB, for Terebratulida
- Motility
- stationaryPBDB, for Terebratulida
- Vision
- blindPBDB, for Rhynchonellata
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At most 5.8 million years on record.
Every occurrence read is dated to somewhere between 259.857 Mya and 254.14 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
4 occurrences of Hemiptychina 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
4 occurrences- Permian100%
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 Hemiptychina has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.
Hemiptychina and its relatives
PermianWhere Hemiptychina and its relatives were recorded in the Permian.
Found in the same rock
1,646 taxa- Spirigerella derbyi83 sites
- Cleiothyridina subexpansa71 sites
- Betaneospirifer moosakhailensis68 sites
- Costiferina indica66 sites
- Kiangsiella pectiniformis60 sites
- Stenoscisma purdoni60 sites
- Linoproductus lineatus58 sites
- Chonetella nasuta54 sites
- Richthofenia lawrenciana54 sites
- Transennatia gratiosa52 sites
- Cleiothyridina capillata50 sites
- Athyris48 sites
- Terebratuloidea davidsoni48 sites
- Spirigerella grandis47 sites
- Notothyris subvesicularis46 sites
- Marginifera (Marginifera) typica45 sites
- Athyrella hybrida44 sites
- Hustedia grandicosta44 sites
- Spirigerella praelonga44 sites
- Spirigerella ovoidalis41 sites
- Notothyris warthi40 sites
- Spirigerella proxima40 sites
- Callispirina ornata39 sites
- Spirigerella derbyi acuteplicata39 sites
The Paleobiology Database records 209 sites for Hemiptychina, 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 4 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 Hemiptychina
- Source
- GBIF
- Credit
- Yale Peabody Museum
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Hemiptychina was found in MorphoSource and Sketchfab.
Smithsonian Open Access was 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 itHemiptychininae through timeFormations of the PermianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Waagen 1882)