Acritarcha

Searched as Acritarchs indet.. The Paleobiology Database treats Acritarcha as the accepted name.

No picture of Acritarcha was found. Wikidata was searched and had none. iDigBio and GBIF were not searched: the Paleobiology Database does not place Acritarcha firmly enough to tell it from something else bearing the same name, and a search on the name alone returns whichever of them was photographed. Wikipedia and Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

On record

Recorded, not inferred
Also called
acritarchsPBDB
Sits inside
EukaryotaPBDB
Diet
"photoautotroph"PBDB
Environment
marinePBDB

Time the record covers

At least 95 million years on record.

The record covers at least 201.4 Mya to 106.3 Mya. No occurrence read is dated outside 205.7 Mya to 93.9 Mya.

Late Triassic — about 1 of 10 occurrencesEarly Jurassic — about 0 of 10 occurrencesMiddle Jurassic — about 0 of 10 occurrencesLate Jurassic — about 0 of 10 occurrencesEarly Cretaceous — about 7 of 10 occurrencesEarly CretaceousLate Cretaceous — about 2 of 10 occurrences208–204 Mya — about 0.4 occurrences204–200 Mya — about 0.6 occurrences115–111 Mya — about 2 occurrences111–107 Mya — about 3 occurrences107–103 Mya — about 2 occurrences103–99 Mya — about 1 occurrence99–96 Mya — about 1 occurrence96–92 Mya — about 0.5 occurrences201.4 Mya106.3 Mya208 Mya92 Mya

10 occurrences of Acritarcha 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

10 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.

Acritarcha and its relatives

Early Cretaceous

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

Found in the same rock

1,618 taxa

The Paleobiology Database records 628 sites for Acritarcha, and this reads 240 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

2 references

Each of the 10 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 Acritarcha was found. Wikidata was searched and had none.

iDigBio and GBIF were not searched: the Paleobiology Database does not place Acritarcha firmly enough to tell it from something else bearing the same name, and a search on the name alone returns whichever of them was photographed.

Wikipedia and Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

No 3D scan of Acritarcha 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 itEukaryota through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Evitt 1963