Actinocyclus

Actinocyclus is a genus of diatoms in the family Hemidiscaceae.

Actinocyclus

Kristian Peters http://www.korseby.net/outer/flora/algae/index.html · CC BY-SA 3.0 · via Wikipedia/Commons. 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
HemidiscaceaePBDB
Diet
"photoautotroph"PBDB, for Bacillariophyceae
Environment
marine,brackish,freshwaterPBDB, for Bacillariophyceae

Time the record covers

At least 89 million years on record.

The record covers at least 89.8 Mya to 11.7 ka. No occurrence read is dated outside 93.9 Mya to 0 Mya.

Late Cretaceous — about 6 of 3147 occurrencesLate CretaceousPaleocene — about 0 of 3147 occurrencesEocene — about 0 of 3147 occurrencesOligocene — about 0 of 3147 occurrencesMiocene — about 780 of 3147 occurrencesMiocenePliocene — about 567 of 3147 occurrencesPleistocene — about 1722 of 3147 occurrences96–93 Mya — about 0.3 occurrences93–89 Mya — about 0.9 occurrences89–86 Mya — about 2 occurrences86–83 Mya — about 0.4 occurrences83–80 Mya — about 0.8 occurrences80–77 Mya — about 0.8 occurrences77–73 Mya — about 0.8 occurrences73–70 Mya — about 0.3 occurrences26–22 Mya — about 7 occurrences22–19 Mya — about 34 occurrences19–16 Mya — about 35 occurrences16–13 Mya — about 140 occurrences13–9.6 Mya — about 211 occurrences9.6–6.4 Mya — about 259 occurrences6.4–3.2 Mya — about 484 occurrences3.2–0 Mya — about 1970 occurrences89.8 Mya11.7 ka96 Mya0 Mya

3,147 occurrences of Actinocyclus on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group. 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

3,147 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

7 formations

Pungo River — 35.40°N, 76.80°WChoptank — 38.44°N, 76.44°WDaineji — 37.37°N, 141.04°ERosarito Beach — 32.12°N, 116.80°WFormación Coquimbo — 30.32°S, 71.52°WTatsunokuchi — 39.07°N, 141.18°ENeuburger Weiß — 48.73°N, 11.18°E

Loading coastlines…

The named rock units Actinocyclus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3,129 occurrences have no formation on record, which is common for older literature.

Actinocyclus and its relatives

Pleistocene

Where Actinocyclus and its relatives were recorded in the Pleistocene.

Found in the same rock

646 taxa

The Paleobiology Database records at least 1,074 sites for Actinocyclus, 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

61 references

Each of the 3,147 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. 49 further references are not listed. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Actinocyclus

Credit
Kristian Peters http://www.korseby.net/outer/flora/algae/index.html
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Actinocyclus 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.

The description on this site

Licence
CC BY-SA 4.0

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itHemidiscaceae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Ehrenberg 1837