Oligosphaeridium

Oligosphaeridium

via iDigBio · CC BY · 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
GonyaulacaceaePBDB
Diet
"photoautotroph"PBDB, for Dinoflagellata
Environment
freshwaterPBDB, for Dinophyceae

Time the record covers

At least 60 million years on record.

The record covers at least 132.6 Mya to 72.2 Mya. No occurrence read is dated outside 143.1 Mya to 66 Mya.

Late Jurassic — about 0 of 166 occurrencesEarly Cretaceous — about 86 of 166 occurrencesEarly CretaceousLate Cretaceous — about 80 of 166 occurrencesLate CretaceousPaleocene — about 0 of 166 occurrences145–142 Mya — about 0.0 occurrences142–139 Mya — about 0.1 occurrences139–137 Mya — about 0.9 occurrences137–134 Mya — about 5 occurrences134–131 Mya — about 4 occurrences131–129 Mya — about 3 occurrences129–126 Mya — about 3 occurrences126–123 Mya — about 4 occurrences123–121 Mya — about 4 occurrences121–118 Mya — about 10 occurrences118–115 Mya — about 14 occurrences115–113 Mya — about 14 occurrences113–110 Mya — about 14 occurrences110–107 Mya — about 3 occurrences107–105 Mya — about 3 occurrences105–102 Mya — about 3 occurrences102–99 Mya — about 10 occurrences99–97 Mya — about 19 occurrences97–94 Mya — about 18 occurrences94–91 Mya — about 3 occurrences91–89 Mya — about 2 occurrences89–86 Mya — about 0.5 occurrences86–83 Mya — about 1 occurrence83–80 Mya — about 4 occurrences80–78 Mya — about 4 occurrences78–75 Mya — about 4 occurrences75–72 Mya — about 4 occurrences72–70 Mya — about 4 occurrences70–67 Mya — about 4 occurrences67–64 Mya — about 2 occurrences132.6 Mya72.2 Mya145 Mya64 Mya

166 occurrences of Oligosphaeridium 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

166 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

16 formations

Riachuelo — 10.65°S, 37.04°WApollonian — 4.98°N, 3.02°WSanta Marta — 63.88°S, 57.96°WSanta Marta — 64.21°S, 57.18°WAbu Roash — 30.00°N, 28.00°ESpringhill — 52.77°S, 68.70°WAgrio — 38.42°S, 70.00°WSix Hills — 25.50°N, 29.00°ESix Hills — 25.50°N, 29.25°ECalafate — 50.38°S, 72.20°WTalme Yafe — 31.65°N, 34.61°EPampa Rincón — 52.77°S, 68.70°WPedersen — 63.92°S, 58.25°WKotick Point — 64.00°S, 58.36°WKotick Point — 64.01°S, 58.35°WLadegardsaen — 82.42°N, 23.17°WMarnes bleues — 44.18°N, 5.90°EAlta Vista — 50.49°S, 72.58°WLangpar — 25.20°N, 91.77°E

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The named rock units Oligosphaeridium has been recovered from, largest first. Drawn where the rock is now, not where it formed. 46 occurrences have no formation on record, which is common for older literature.

Oligosphaeridium and its relatives

Early Cretaceous

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

Found in the same rock

428 taxa

The Paleobiology Database records 84 sites for Oligosphaeridium, 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

19 references

Each of the 166 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. 7 further references are not listed. 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 content1

Picture of Oligosphaeridium

Source
iDigBio
Credit
via iDigBio
Licence
CC BY
Commercial use
the licence allows it

No 3D scan of Oligosphaeridium 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 itGonyaulacaceae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Davey and Williams 1966