Arkacrinus dubius

No picture of Arkacrinus dubius was found. Wikipedia, Wikidata and iDigBio were searched and had none. 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 Arkacrinus dubius, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
ArkacrinusPBDB
Diet
suspension feederPBDB, for Cladida
Life habit
intermediate-level epifaunalPBDB, for Cladida
Motility
stationary, attachedPBDB, for Cladida
Vision
blindPBDB, for Crinoidea
Environment
marinePBDB, for Echinodermata

Time the record covers

At most 12 million years on record.

Every occurrence read is dated to somewhere between 330.3 Mya and 318.6 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Carboniferous — about 16 of 16 occurrencesCarboniferous330–330 Mya — about 0.1 occurrences330–330 Mya — about 0.1 occurrences330–329 Mya — about 0.1 occurrences329–329 Mya — about 0.1 occurrences329–328 Mya — about 0.1 occurrences328–328 Mya — about 0.1 occurrences328–327 Mya — about 0.1 occurrences327–327 Mya — about 0.1 occurrences327–327 Mya — about 0.1 occurrences327–326 Mya — about 0.1 occurrences326–326 Mya — about 0.1 occurrences326–325 Mya — about 0.1 occurrences325–325 Mya — about 0.1 occurrences325–324 Mya — about 0.1 occurrences324–324 Mya — about 0.1 occurrences324–324 Mya — about 0.1 occurrences324–323 Mya — about 0.7 occurrences323–323 Mya — about 1 occurrence323–322 Mya — about 1 occurrence322–322 Mya — about 1 occurrence322–321 Mya — about 1 occurrence321–321 Mya — about 1 occurrence321–321 Mya — about 1 occurrence321–320 Mya — about 1 occurrence320–320 Mya — about 1 occurrence320–319 Mya — about 1 occurrence319–319 Mya — about 1 occurrence319–319 Mya — about 1 occurrence330.8 Mya318.1 Mya

16 occurrences of Arkacrinus dubius 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

16 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

Bloyd — 36.08°N, 94.15°WBloyd — 36.10°N, 94.13°WBloyd — 36.03°N, 94.15°WBloyd — 35.96°N, 95.32°WBloyd — 35.94°N, 95.27°WBloyd — 35.66°N, 94.99°WBloyd — 35.89°N, 94.30°WBloyd — 35.44°N, 94.30°WBloyd — 35.76°N, 94.48°WMorrow — 35.83°N, 95.23°WMorrow — 35.82°N, 95.27°WRedoak Hollow — 34.37°N, 97.34°W

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

Arkacrinus dubius and its relatives

Carboniferous

Where Arkacrinus dubius and its relatives were recorded in the Carboniferous.

Found in the same rock

181 taxa

The Paleobiology Database records 15 sites for Arkacrinus dubius, 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

3 references

Each of the 16 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 Arkacrinus dubius was found. Wikipedia, Wikidata and iDigBio were searched and had none.

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 Arkacrinus dubius, or no answer at all. This entry cannot say which.

No 3D scan of Arkacrinus dubius 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 itArkacrinus through timeFormations of the CarboniferousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Mather 1915)