Spiraloconulus

Spiraloconulus is a genus of middle Jurassic forams with a coarsely agglutinated, microgranular, calcareous wall. The test is large, conical to cylindrical, coiled somewhat straight; the early coiled stage results in a flattened apex. Distinctly coiled microspheric tests are as much as 2 mm wide and 1.6 mm high. Megalospheric tests are smaller, up to 1.5 mm high and 1.1 mm wide.

No picture of Spiraloconulus was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Spiraloconulus, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
ForaminiferaPBDB
Diet
omnivorePBDB, for Foraminifera
Life habit
semi-infaunalPBDB, for Foraminifera
Motility
stationaryPBDB, for Foraminifera

Time the record covers

At least 9.2 million years on record.

The record covers at least 161.5 Mya to 152.21 Mya. No occurrence read is dated outside 174.7 Mya to 149.2 Mya.

Early Jurassic — about 0 of 2 occurrencesMiddle Jurassic — about 1 of 2 occurrencesMiddle JurassicLate Jurassic — about 1 of 2 occurrencesLate Jurassic175–174 Mya — about 0.0 occurrences174–173 Mya — about 0.1 occurrences173–173 Mya — about 0.1 occurrences173–172 Mya — about 0.1 occurrences172–171 Mya — about 0.1 occurrences171–170 Mya — about 0.1 occurrences170–169 Mya — about 0.1 occurrences169–168 Mya — about 0.1 occurrences168–167 Mya — about 0.1 occurrences167–166 Mya — about 0.1 occurrences166–165 Mya — about 0.1 occurrences165–165 Mya — about 0.1 occurrences165–164 Mya — about 0.1 occurrences164–163 Mya — about 0.1 occurrences163–162 Mya — about 0.1 occurrences162–161 Mya — about 0.0 occurrences152–151 Mya — about 0.3 occurrences151–150 Mya — about 0.3 occurrences150–150 Mya — about 0.3 occurrences150–149 Mya — about 0.1 occurrences161.5 Mya152.21 Mya175.2 Mya148.7 Mya

2 occurrences of Spiraloconulus on record. 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

2 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

1 formation

Ota Limestone — 39.07°N, 9.00°W

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The named rock units Spiraloconulus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Found in the same rock

5 taxa

The Paleobiology Database records 1 site for Spiraloconulus, and this reads all of them. The number is how many of those sites it was catalogued from too.

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 2 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 Spiraloconulus was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Spiraloconulus, or no answer at all. This entry cannot say which.

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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 itForaminifera through timeThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.