Actinomma

Actinomma

Hannes Grobe /AWI · CC BY 3.0 · via Wikidata/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
ActinommidaePBDB
Diet
omnivorePBDB, for Radiolaria
Life habit
planktonicPBDB, for Radiolaria
Motility
passively mobilePBDB, for Radiolaria
Environment
marinePBDB, for Radiolaria

Time the record covers

At least 243 million years on record.

The record covers at least 243.43 Mya to 11.7 ka. No occurrence read is dated outside 244.4 Mya to 0 Mya.

Early Triassic — about 0 of 793 occurrencesMiddle Triassic — about 12 of 793 occurrencesLate Triassic — about 0 of 793 occurrencesEarly Jurassic — about 7 of 793 occurrencesEarly JurassicMiddle Jurassic — about 9 of 793 occurrencesLate Jurassic — about 61 of 793 occurrencesEarly Cretaceous — about 12 of 793 occurrencesEarly CretaceousLate Cretaceous — about 2 of 793 occurrencesLate CretaceousPaleocene — about 0 of 793 occurrencesEocene — about 0 of 793 occurrencesOligocene — about 0 of 793 occurrencesMiocene — about 5 of 793 occurrencesPliocene — about 29 of 793 occurrencesPleistocene — about 606 of 793 occurrences249–241 Mya — about 12 occurrences191–183 Mya — about 7 occurrences183–175 Mya — about 0.2 occurrences175–166 Mya — about 6 occurrences166–158 Mya — about 3 occurrences158–150 Mya — about 11 occurrences150–141 Mya — about 56 occurrences141–133 Mya — about 5 occurrences91–83 Mya — about 0.4 occurrences83–75 Mya — about 1 occurrence75–66 Mya — about 0.4 occurrences25–17 Mya — about 2 occurrences17–8.3 Mya — about 2 occurrences8.3–0 Mya — about 686 occurrences243.43 Mya11.7 ka249 Mya0 Mya

793 occurrences of Actinomma 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

793 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

18 formations

Ameghino — 64.47°S, 58.97°WAmeghino — 63.97°S, 58.17°WHinodani — 33.77°N, 134.25°EFang Chert — 19.53°N, 98.96°EWahrah — 22.97°N, 57.06°EOberalmer Schichten — 47.73°N, 13.03°EOberalmer Schichten — 47.70°N, 13.07°EAnchorage — 62.60°S, 61.17°WCzajakowa Radiolarite — 49.37°N, 20.62°EKirsanovskaya — 52.55°N, 42.57°EFonzaso — 45.88°N, 8.64°ERosso ad Aptici — 45.88°N, 8.64°ESoccher — 46.19°N, 12.30°EAptychus Beds — 47.67°N, 12.90°ESchrambach-Schichten — 47.73°N, 13.03°EDachhornstein — 48.88°N, 11.01°EMörnsheim — 48.87°N, 11.00°ECamarena — 37.57°N, 3.50°WLiegende Bankkalk — 48.12°N, 8.87°ETakinoue — 42.80°N, 142.35°E

Loading coastlines…

The named rock units Actinomma has been recovered from, largest first. Drawn where the rock is now, not where it formed. 718 occurrences have no formation on record, which is common for older literature.

Actinomma and its relatives

Pleistocene

Where Actinomma and its relatives were recorded in the Pleistocene.

Found in the same rock

953 taxa

The Paleobiology Database records 581 sites for Actinomma, and this reads 240 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

50 references

Each of the 793 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. 37 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 content2

Picture of Actinomma

Credit
Hannes Grobe /AWI
Licence
CC BY 3.0
Commercial use
the licence allows it

CT scan

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
Actinomma sp. · l-rcw:microfossil:Rad 09

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

Keep going

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

Occurrence data from the Paleobiology Database, CC BY 4.0. Haeckel 1862