Oklahomacystis tribrachiatus

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
- OklahomacystisPBDB
- Diet
- suspension feederPBDB, for Paracrinoidea
- Life habit
- epifaunalPBDB, for Paracrinoidea
- Motility
- stationaryPBDB, for Paracrinoidea
- Vision
- blindPBDB, for Paracrinoidea
- 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.
4 occurrences of Oklahomacystis tribrachiatus 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
4 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
Loading coastlines…
The named rock units Oklahomacystis tribrachiatus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Oklahomacystis tribrachiatus and its relatives
OrdovicianWhere Oklahomacystis tribrachiatus and its relatives were recorded in the Ordovician.
Found in the same rock
32 taxa- Anatiferocystis papillata2 sites
- Archaeocrinus2 sites
- Carabocrinus2 sites
- Echinosphaerites aurantium2 sites
- Glyptocystites regnelli2 sites
- Sinclairocystis praedicta2 sites
- Amygdalocystites1 site
- Amygdalocystites florealis1 site
- Anthracocrinus primitivus1 site
- Anulocrinus1 site
- Archaeocrinus lacunosus1 site
- Calceocrinus1 site
- Cheirocrinus1 site
- Cyathocystis1 site
- Dendrocrinus1 site
- Diabolocrinus1 site
- Globulocystites infundus1 site
- Glyptocystella loeblichi1 site
- Glyptocystites1 site
- Hybocrinus1 site
- Hybocrinus conicus1 site
- Myeinocystites natus1 site
- Oklahomacystis spissus1 site
- Pararchaeocrinus decoratus1 site
The Paleobiology Database records 3 sites for Oklahomacystis tribrachiatus, 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
2 referencesEach 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 Oklahomacystis tribrachiatus
- Source
- GBIF
- Credit
- Sprinkle, James
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Oklahomacystis tribrachiatus 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 itOklahomacystis through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Bassler 1943)