Cyclastrum

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

On record

Recorded, not inferred
Sits inside
AngulobracchiidaePBDB

Time the record covers

At least 98 million years on record.

The record covers at least 184.2 Mya to 85.7 Mya. No occurrence read is dated outside 192.9 Mya to 83.6 Mya.

Early Jurassic — about 32 of 161 occurrencesEarly JurassicMiddle Jurassic — about 0 of 161 occurrencesLate Jurassic — about 1 of 161 occurrencesLate JurassicEarly Cretaceous — about 125 of 161 occurrencesEarly CretaceousLate Cretaceous — about 3 of 161 occurrencesLate Cretaceous195–191 Mya — about 6 occurrences191–188 Mya — about 14 occurrences188–184 Mya — about 12 occurrences150–146 Mya — about 0.8 occurrences146–142 Mya — about 0.7 occurrences142–138 Mya — about 2 occurrences138–134 Mya — about 10 occurrences134–131 Mya — about 20 occurrences131–127 Mya — about 27 occurrences127–123 Mya — about 37 occurrences123–119 Mya — about 25 occurrences119–116 Mya — about 2 occurrences116–112 Mya — about 1 occurrence93–89 Mya — about 0.2 occurrences89–85 Mya — about 1 occurrence85–81 Mya — about 2 occurrences184.2 Mya85.7 Mya195 Mya81 Mya

161 occurrences of Cyclastrum on record, most of them in the Early Cretaceous. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

161 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

9 formations

Maiolica — 43.35°N, 12.71°EMaiolica — 43.48°N, 12.72°EMaiolica — 45.64°N, 9.95°EMaiolica — 44.00°N, 14.00°EMaiolica — 43.26°N, 12.81°ESan Hipolito — 26.00°N, 111.00°WFannin — 53.20°N, 132.05°WFannin — 53.43°N, 132.29°WScisti a Fucoidi — 43.48°N, 12.72°EGhost Creek — 53.18°N, 132.02°WAmden — 47.75°N, 11.45°EAmden — 47.73°N, 11.52°ERosso ad Aptici — 45.88°N, 8.64°ESid'r — 22.71°N, 57.19°EWahrah — 23.27°N, 56.65°E

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The named rock units Cyclastrum has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 occurrences have no formation on record, which is common for older literature.

Cyclastrum and its relatives

Early Cretaceous

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

Found in the same rock

471 taxa

The Paleobiology Database records 85 sites for Cyclastrum, and this reads all of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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 161 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 Cyclastrum 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 Cyclastrum, or no answer at all. This entry cannot say which.

No 3D scan of Cyclastrum 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 itAngulobracchiidae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Rüst 1898