Distephanus speculum

No picture of Distephanus speculum was found. Wikidata and iDigBio were searched and had none. GBIF was not searched: the Paleobiology Database does not place Distephanus speculum 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
Sits inside
StephanochaPBDB
Diet
"photoautotroph"PBDB, for Chrysophyceae
Life habit
planktonicPBDB, for Chrysophyceae
Motility
passively mobilePBDB, for Chrysophyceae

Time the record covers

At least 15 million years on record.

The record covers at least 15.98 Mya to 11.7 ka. No occurrence read is dated outside 23.04 Mya to 0 Mya.

Oligocene — about 0 of 243 occurrencesMiocene — about 22 of 243 occurrencesMiocenePliocene — about 33 of 243 occurrencesPliocenePleistocene — about 185 of 243 occurrencesPleistocene24–23 Mya — about 0.1 occurrences23–22 Mya — about 0.4 occurrences22–21 Mya — about 0.4 occurrences21–20 Mya — about 0.4 occurrences20–20 Mya — about 0.5 occurrences20–19 Mya — about 0.5 occurrences19–18 Mya — about 0.5 occurrences18–17 Mya — about 0.5 occurrences17–16 Mya — about 0.5 occurrences16–16 Mya — about 0.8 occurrences16–15 Mya — about 1 occurrence15–14 Mya — about 1 occurrence14–13 Mya — about 0.9 occurrences13–13 Mya — about 0.7 occurrences13–12 Mya — about 0.7 occurrences12–11 Mya — about 1 occurrence11–10 Mya — about 2 occurrences10–9.4 Mya — about 2 occurrences9.4–8.6 Mya — about 2 occurrences8.6–7.8 Mya — about 2 occurrences7.8–7.1 Mya — about 2 occurrences7.1–6.3 Mya — about 2 occurrences6.3–5.5 Mya — about 2 occurrences5.5–4.7 Mya — about 2 occurrences4.7–3.9 Mya — about 2 occurrences3.9–3.1 Mya — about 14 occurrences3.1–2.4 Mya — about 30 occurrences2.4–1.6 Mya — about 65 occurrences1.6–785 ka Mya — about 95 occurrences785 ka–0 Mya — about 14 occurrences15.98 Mya11.7 ka23.5 Mya0 Mya

243 occurrences of Distephanus speculum 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

243 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

3 formations

Rosarito Beach — 32.12°N, 116.80°WPungo River — 35.40°N, 76.80°WFormación Coquimbo — 30.32°S, 71.52°W

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The named rock units Distephanus speculum has been recovered from, largest first. Drawn where the rock is now, not where it formed. 239 occurrences have no formation on record, which is common for older literature.

Distephanus speculum and its relatives

Pleistocene

Where Distephanus speculum and its relatives were recorded in the Pleistocene.

Found in the same rock

389 taxa

The Paleobiology Database records 171 sites for Distephanus speculum, 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

15 references

Each of the 243 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. 3 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 content0

No picture of Distephanus speculum was found. Wikidata and iDigBio were searched and had none.

GBIF was not searched: the Paleobiology Database does not place Distephanus speculum 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 Distephanus speculum 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 itStephanocha through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Ehrenberg 1839)