Placotrema cretaceum
No picture of Placotrema cretaceum was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Placotrema cretaceum, or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- PlacotremaPBDB
- Diet
- suspension feederPBDB, for Hexactinosa
- Life habit
- epifaunalPBDB, for Hexactinosa
- Motility
- stationary, attachedPBDB, for Hexactinosa
- Vision
- blindPBDB, for Hexactinellida
- Environment
- marinePBDB, for Hexactinellida
Time the record covers
At most 4.1 million years on record.
The one occurrence read is dated to somewhere between 93.9 Mya and 89.8 Mya, which is a dating window rather than a span.
1 occurrence of Placotrema cretaceum on record, most of them in the Late Cretaceous. 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
1 occurrences- Late Cretaceous100%
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
- Lewes Nodular Chalk Formation · Chalk Group1
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The named rock units Placotrema cretaceum has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Placotrema cretaceum and its relatives
Late CretaceousWhere Placotrema cretaceum and its relatives were recorded in the Late Cretaceous.
Found in the same rock
19 taxa- Allocrioceras angustum1 site
- Allocrioceras billinghursti1 site
- Allocrioceras nodiger1 site
- Anisoceras reidi1 site
- Eurete formosum1 site
- Eurete periphragelloides1 site
- Farrea oakleyi1 site
- Guettardiscyphia (Hillendia) polymorpha1 site
- Lewesiceras mantelli1 site
- Lewesiceras woodi1 site
- Metaptychoceras smithi1 site
- Nostoceras (Eubostrychoceras) saxonicum1 site
- Scaphites (Scaphites) meslei1 site
- Scaphites diana1 site
- Scaphites kieslingswaldensis1 site
- Sciponoceras bohemicum1 site
- Subprionocyclus branneri1 site
- Subprionocyclus hitchinensis1 site
- Subprionocyclus neptuni1 site
The Paleobiology Database records 1 site for Placotrema cretaceum, and this reads all of them. The number is how many of those sites it was catalogued from too.
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 1 occurrence 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 content0
No picture of Placotrema cretaceum was found. Wikipedia, Wikidata and iDigBio were searched and had none.
Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.
GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Placotrema cretaceum, or no answer at all. This entry cannot say which.
No 3D scan of Placotrema cretaceum 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 itPlacotrema through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Hinde 1883