Tetracystis
via iDigBio · 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
- CallocystitidaePBDB
- 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 least 4 million years on record.
The record covers at least 426.7 Mya to 422.7 Mya. No occurrence read is dated outside 430.6 Mya to 419.62 Mya.
2 occurrences of Tetracystis on record, most of them in the Silurian. 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- Silurian100%
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
2 formations
Loading coastlines…
The named rock units Tetracystis has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Tetracystis and its relatives
SilurianWhere Tetracystis and its relatives were recorded in the Silurian.
Found in the same rock
30 taxa- Pseudocrinites2 sites
- Apiocystites1 site
- Arisaigaster1 site
- Atrypa reticularis1 site
- Bryozoa1 site
- Clidochirus1 site
- Eucalyptocrinites1 site
- Fistuliporidae1 site
- Glansicystis1 site
- Hapalocrinus1 site
- Jaeckelocystis spp.1 site
- Lepidactis wenlocki1 site
- Lepidaster grayi1 site
- Lepidocentrus1 site
- Lepocrinites1 site
- Myelodactylus1 site
- Naticonema1 site
- Palasterina antiqua1 site
- Periechocrinus1 site
- Placocystites1 site
- Protaxocrinus1 site
- Prunocystis fletcheri1 site
- Pycnosaccus1 site
- Schuchertella1 site
The Paleobiology Database records 2 sites for Tetracystis, 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- A field guide to the Silurian Echinodermata of the British Isles: Part 1 - Eleutherozoa and Rhombifera1
- Caradocian-Gedinnian echinoderm associations of Central and Eastern North America1
Each 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 Tetracystis
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Tetracystis 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 itCallocystitidae through timeFormations of the SilurianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Schuchert 1904