Plaxocrinus

Plaxocrinus

via iDigBio · CC0 · via iDigBio. 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
PirasocrinidaePBDB
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 least 16 million years on record.

The record covers at least 307 Mya to 290.1 Mya. No occurrence read is dated outside 315.2 Mya to 283.3 Mya.

Carboniferous — about 5 of 10 occurrencesCarboniferousPermian — about 5 of 10 occurrencesPermian316–315 Mya — about 0.1 occurrences315–314 Mya — about 0.1 occurrences314–313 Mya — about 0.1 occurrences313–311 Mya — about 0.1 occurrences311–310 Mya — about 0.1 occurrences310–309 Mya — about 0.1 occurrences309–308 Mya — about 0.1 occurrences308–307 Mya — about 0.1 occurrences307–306 Mya — about 0.1 occurrences306–305 Mya — about 1.0 occurrences305–304 Mya — about 0.9 occurrences304–303 Mya — about 0.4 occurrences303–301 Mya — about 0.4 occurrences301–300 Mya — about 0.4 occurrences300–299 Mya — about 0.4 occurrences299–298 Mya — about 0.2 occurrences298–297 Mya — about 0.1 occurrences297–296 Mya — about 0.1 occurrences296–295 Mya — about 0.1 occurrences295–294 Mya — about 0.1 occurrences294–293 Mya — about 0.1 occurrences293–292 Mya — about 0.1 occurrences292–290 Mya — about 0.1 occurrences290–289 Mya — about 0.6 occurrences289–288 Mya — about 0.8 occurrences288–287 Mya — about 0.7 occurrences287–286 Mya — about 0.7 occurrences286–285 Mya — about 0.7 occurrences285–284 Mya — about 0.7 occurrences284–283 Mya — about 0.3 occurrences307 Mya290.1 Mya315.8 Mya282.7 Mya

10 occurrences of Plaxocrinus on record, most of them in the Permian. 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

10 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

5 formations

Bird Spring — 36.70°N, 114.42°WWolf Mountain — 33.20°N, 97.83°WStranger — 38.57°N, 95.40°WKanwaka — 40.96°N, 95.85°WDeer Creek — 40.40°N, 95.85°W

Loading coastlines…

The named rock units Plaxocrinus 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.

Plaxocrinus and its relatives

Permian

Where Plaxocrinus and its relatives were recorded in the Permian.

Found in the same rock

90 taxa

The Paleobiology Database records 8 sites for Plaxocrinus, 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

7 references

Each of the 10 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 content1

Picture of Plaxocrinus

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Plaxocrinus 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 itPirasocrinidae through timeFormations of the PermianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Moore and Plummer 1937