Circulina

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

On record

Recorded, not inferred
Sits inside
ConiferalesPBDB
Diet
"photoautotroph"PBDB, for Streptophyta

Time the record covers

At least 357 million years on record.

The record covers at least 451.8 Mya to 93.9 Mya. No occurrence read is dated outside 452.8 Mya to 66 Mya.

Ordovician — about 1 of 27 occurrencesSilurian — about 0 of 27 occurrencesDevonian — about 0 of 27 occurrencesCarboniferous — about 0 of 27 occurrencesPermian — about 0 of 27 occurrencesEarly Triassic — about 0 of 27 occurrencesMiddle Triassic — about 0 of 27 occurrencesLate Triassic — about 2 of 27 occurrencesLate TriassicEarly Jurassic — about 0 of 27 occurrencesMiddle Jurassic — about 0 of 27 occurrencesLate Jurassic — about 0 of 27 occurrencesEarly Cretaceous — about 19 of 27 occurrencesEarly CretaceousLate Cretaceous — about 5 of 27 occurrencesLate CretaceousPaleocene — about 0 of 27 occurrences461–447 Mya — about 1 occurrence206–192 Mya — about 2 occurrences139–125 Mya — about 0.1 occurrences125–112 Mya — about 11 occurrences112–98 Mya — about 9 occurrences98–85 Mya — about 3 occurrences85–72 Mya — about 0.5 occurrences72–58 Mya — about 0.2 occurrences451.8 Mya93.9 Mya461 Mya58 Mya

27 occurrences of Circulina on record, most of them in the Early 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

27 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.

Found in

6 formations

Alamein — 29.00°N, 29.00°EKharita — 29.00°N, 29.00°EBahariya — 29.00°N, 29.00°EPiedra Clavada — 49.53°S, 71.48°WPiedra Clavada — 49.60°S, 71.47°WCodó — 4.52°S, 44.03°WVruda — 59.58°N, 29.18°E

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The named rock units Circulina has been recovered from, largest first. Drawn where the rock is now, not where it formed. 12 occurrences have no formation on record, which is common for older literature.

Circulina and its relatives

Early Cretaceous

Where Circulina and its relatives were recorded in the Early Cretaceous.

Found in the same rock

183 taxa

The Paleobiology Database records 22 sites for Circulina, 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

8 references

Each of the 27 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. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content0

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

No 3D scan of Circulina 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 itConiferales through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Maljawkina 1949