Quadrum intermedium

No picture of Quadrum intermedium 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 Quadrum intermedium, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
QuadrumPBDB
Diet
"photoautotroph"PBDB, for Haptophyta
Life habit
planktonic, depth=surfacePBDB, for Haptophyta
Motility
passively mobilePBDB, for Haptophyta
Environment
oceanic,oligotrophic,marine,brackishPBDB, for Haptophyta

Time the record covers

At most 4.1 million years on record.

Every occurrence read is dated to somewhere between 93.9 Mya and 89.8 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Cretaceous — about 13 of 13 occurrencesLate Cretaceous94–94 Mya — about 0.0 occurrences94–94 Mya — about 0.5 occurrences94–94 Mya — about 0.5 occurrences94–93 Mya — about 0.5 occurrences93–93 Mya — about 0.5 occurrences93–93 Mya — about 0.5 occurrences93–93 Mya — about 0.5 occurrences93–93 Mya — about 0.5 occurrences93–93 Mya — about 0.5 occurrences93–92 Mya — about 0.5 occurrences92–92 Mya — about 0.5 occurrences92–92 Mya — about 0.5 occurrences92–92 Mya — about 0.5 occurrences92–92 Mya — about 0.5 occurrences92–92 Mya — about 0.5 occurrences92–91 Mya — about 0.5 occurrences91–91 Mya — about 0.5 occurrences91–91 Mya — about 0.5 occurrences91–91 Mya — about 0.5 occurrences91–91 Mya — about 0.5 occurrences91–90 Mya — about 0.5 occurrences90–90 Mya — about 0.5 occurrences90–90 Mya — about 0.5 occurrences90–90 Mya — about 0.5 occurrences90–90 Mya — about 0.5 occurrences90–90 Mya — about 0.0 occurrences94.4 Mya89.3 Mya

13 occurrences of Quadrum intermedium 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

13 occurrences

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.

Quadrum intermedium and its relatives

Late Cretaceous

Where Quadrum intermedium and its relatives were recorded in the Late Cretaceous.

Found in the same rock

46 taxa

The Paleobiology Database records 13 sites for Quadrum intermedium, 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

Each of the 13 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 content0

No picture of Quadrum intermedium 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 Quadrum intermedium, or no answer at all. This entry cannot say which.

No 3D scan of Quadrum intermedium 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 itQuadrum through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Varol 1992