Achistrum nicholsoni

No picture of Achistrum nicholsoni was found. Wikidata and iDigBio were searched and had none. Wikipedia has a picture filed under this name, but nothing tied it to Achistrum nicholsoni itself, so it was not used. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Achistrum nicholsoni, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
AchistrumPBDB
Diet
detritivorePBDB, for Apodida
Life habit
epifaunalPBDB, for Apodida
Motility
actively mobilePBDB, for Apodida
Vision
blindPBDB, for Holothuroidea
Environment
marinePBDB, for Echinodermata

Time the record covers

At least 36 million years on record.

The record covers at least 351.9 Mya to 315.2 Mya. No occurrence read is dated outside 358.86 Mya to 307 Mya.

Devonian — about 0 of 2 occurrencesCarboniferous — about 2 of 2 occurrencesCarboniferous360–358 Mya — about 0.1 occurrences358–356 Mya — about 0.3 occurrences356–355 Mya — about 0.3 occurrences355–353 Mya — about 0.3 occurrences353–351 Mya — about 0.1 occurrences317–315 Mya — about 0.0 occurrences315–313 Mya — about 0.2 occurrences313–311 Mya — about 0.2 occurrences311–310 Mya — about 0.2 occurrences310–308 Mya — about 0.2 occurrences308–306 Mya — about 0.1 occurrences351.9 Mya315.2 Mya360 Mya306 Mya

2 occurrences of Achistrum nicholsoni on record, most of them in the Carboniferous. 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

2 formations

Rockford Limestone — 40.83°N, 87.25°WBreathitt — 37.63°N, 82.64°W

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The named rock units Achistrum nicholsoni has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Achistrum nicholsoni and its relatives

Carboniferous

Where Achistrum nicholsoni and its relatives were recorded in the Carboniferous.

Found in the same rock

33 taxa

The Paleobiology Database records 2 sites for Achistrum nicholsoni, 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

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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content0

No picture of Achistrum nicholsoni was found. Wikidata and iDigBio were searched and had none.

Wikipedia has a picture filed under this name, but nothing tied it to Achistrum nicholsoni itself, so it was not used.

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

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

No 3D scan of Achistrum nicholsoni 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.

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

Keep going

What may have been alongside itAchistrum through timeFormations of the CarboniferousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Etheridge 1881)