Hesperocystis

Sprinkle, James · 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
- GlyptocystitidaePBDB
- Diet
- suspension feederPBDB, for Rhombifera
- Life habit
- intermediate-level epifaunalPBDB, for Rhombifera
- Motility
- stationary, attachedPBDB, for Rhombifera
- Vision
- blindPBDB, for Rhombifera
- Environment
- marinePBDB, for Echinodermata
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.
3 occurrences of Hesperocystis 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
3 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 Hesperocystis has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Hesperocystis and its relatives
OrdovicianWhere Hesperocystis and its relatives were recorded in the Ordovician.
Found in the same rock
56 taxa- Apodasmocrinus2 sites
- Archaeocrinus2 sites
- Bromidocrinus nodosus2 sites
- Carabocrinus2 sites
- Cyathocystis2 sites
- Dendrocrinus2 sites
- Glyptocystella2 sites
- Hybocrinus2 sites
- Palaeocrinus2 sites
- Paracremacrinus2 sites
- Platycystites2 sites
- Amygdalocystites florealis1 site
- Ancistrorhyncha1 site
- Archaeocrinus lacunosus1 site
- Astrocystites1 site
- Bistomiacystis1 site
- Bromidocrinus1 site
- Bromidocystis bassleri1 site
- Camerate sp.1 site
- Carabocrinus treadwelli1 site
- Cheirocrinus logani1 site
- Cheirocystis ardmorensis1 site
- Cleiocrinus1 site
- Cleiocrinus regius1 site
The Paleobiology Database records 3 sites for Hesperocystis, 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
3 references- Previous studies of Bromide echinoderms1
- Echinoderm zones and faunas1
- Cylindrical and globular rhombiferans1
Each of the 3 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 Hesperocystis
- Source
- GBIF
- Credit
- Sprinkle, James
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Hesperocystis 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 itGlyptocystitidae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Sinclair 1945