Hybocystites problematicus

Brett, Kevin · CC BY 4.0 · 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
- HybocystitesPBDB
- Diet
- suspension feederPBDB, for Hybocrinida
- Life habit
- epifaunalPBDB, for Hybocrinida
- Motility
- stationaryPBDB, for Hybocrinida
- Vision
- blindPBDB, for Crinoidea
- Environment
- marinePBDB, for Echinodermata
Time the record covers
At least 1 million years on record.
The record covers at least 453.8 Mya to 452.8 Mya. No occurrence read is dated outside 457.3 Mya to 445.2 Mya.
7 occurrences of Hybocystites problematicus 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
7 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
3 formations
- Lexington Limestone Formation5
- Bobcaygeon-Verulam Formation · Simcoe Group1
- Bobcaygeon Formation · Simcoe Group1
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The named rock units Hybocystites problematicus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Hybocystites problematicus and its relatives
OrdovicianWhere Hybocystites problematicus and its relatives were recorded in the Ordovician.
Found in the same rock
57 taxa- Hybocrinus tumidus3 sites
- Rhynchotrema increbescens3 sites
- Sowerbyella curdsvillensis3 sites
- Tetraphalerella musculosa3 sites
- Carabocrinus2 sites
- Carinaropsis minima2 sites
- Cincinnaticrinus varibrachialus2 sites
- Cremacrinus guttenbergensis2 sites
- Cremacrinus inaequalis2 sites
- Salpingostoma kentuckyense2 sites
- Sinuites obesa2 sites
- Alaskadiscus subacutus1 site
- Amecystis laevis1 site
- Anomalocrinus astrictus1 site
- Anthroosasterias huxleyi1 site
- Archaeocrinus maraensis1 site
- Archaeocrinus sundayae1 site
- Archinacella simulatrix1 site
- Bucania subangulata1 site
- Camerella immatura1 site
- Cleiocrinus lepidotus1 site
- Cleiocrinus regius1 site
- Cupulocrinus humilis1 site
- Cupulocrinus jewetti1 site
The Paleobiology Database records 7 sites for Hybocystites problematicus, 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 references- Echinoderms from Middle and Upper Ordovician rocks of Kentucky5
- Disparid and hybocrinid crinoids (Echinodermata) from the Upper Ordovician (lower Katian) Brechin Lagerstätte of Ontario2
Each of the 7 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 doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1

Picture of Hybocystites problematicus
- Source
- GBIF
- Credit
- Brett, Kevin
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
No 3D scan of Hybocystites problematicus 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 itHybocystites through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Wetherby 1880