Eocrinoidea

The Eocrinoidea were an extinct class of echinoderms that lived between the Early Cambrian and Late Silurian periods. They are the earliest known group of stalked, brachiole-bearing echinoderms, and were the most common echinoderms during the Cambrian.

Eocrinoidea

Wilson44691 at English Wikipedia · Public Domain · via Wikipedia/Commons. 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
BlastozoaPBDB
Diet
suspension feederPBDB
Life habit
epifaunalPBDB
Motility
stationary, attachedPBDB
Vision
blindPBDB
Environment
marinePBDB, for Echinodermata

Time the record covers

At least 83 million years on record.

The record covers at least 516 Mya to 432.9 Mya. No occurrence read is dated outside 521 Mya to 430.6 Mya.

Cambrian — about 136 of 272 occurrencesCambrianOrdovician — about 135 of 272 occurrencesOrdovicianSilurian — about 1 of 272 occurrencesSilurian523–520 Mya — about 0.5 occurrences520–517 Mya — about 1 occurrence517–513 Mya — about 7 occurrences513–510 Mya — about 9 occurrences510–507 Mya — about 21 occurrences507–504 Mya — about 30 occurrences504–501 Mya — about 21 occurrences501–498 Mya — about 18 occurrences498–495 Mya — about 10 occurrences495–491 Mya — about 10 occurrences491–488 Mya — about 6 occurrences488–485 Mya — about 10 occurrences485–482 Mya — about 14 occurrences482–479 Mya — about 10 occurrences479–476 Mya — about 12 occurrences476–473 Mya — about 14 occurrences473–470 Mya — about 16 occurrences470–466 Mya — about 13 occurrences466–463 Mya — about 10 occurrences463–460 Mya — about 13 occurrences460–457 Mya — about 13 occurrences457–454 Mya — about 5 occurrences454–451 Mya — about 4 occurrences451–448 Mya — about 2 occurrences448–444 Mya — about 0.7 occurrences444–441 Mya — about 0.3 occurrences435–432 Mya — about 0.4 occurrences432–429 Mya — about 0.6 occurrences516 Mya432.9 Mya523 Mya429 Mya

272 occurrences of Eocrinoidea on record, most of them in the Cambrian. 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

272 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

100 formations

Deadwood — 47.42°N, 105.59°WDeadwood — 47.15°N, 110.22°WDeadwood — 47.98°N, 102.92°WDeadwood — 46.87°N, 103.30°WJince — 49.78°N, 14.00°EJince — 49.00°N, 14.00°EFezouata Shale — 30.57°N, 5.93°WFezouata Shale — 30.55°N, 5.62°WFezouata Shale — 30.65°N, 5.88°WFezouata Shale — 30.68°N, 6.50°WFezouata Shale — 30.64°N, 5.72°WSnowy Range — 47.15°N, 110.22°WSnowy Range — 44.50°N, 109.18°WSnowy Range — 45.02°N, 109.93°WSnowy Range — 45.54°N, 110.92°WSnowy Range — 47.48°N, 115.09°WUpper Fezouata — 30.42°N, 5.85°WUpper Fezouata — 27.88°N, 11.42°WUpper Fezouata — 27.82°N, 11.40°WUpper Fezouata — 30.55°N, 5.68°WMurero — 41.17°N, 1.48°WMurero — 41.66°N, 1.77°WLangston — 42.19°N, 112.25°WLangston — 41.59°N, 112.04°WLangston — 42.37°N, 111.51°WLangston — 41.97°N, 111.70°WBromide — 34.00°N, 97.00°WBromide — 34.46°N, 96.52°WBromide — 34.45°N, 97.17°WBromide — 34.62°N, 96.63°WKaili — 27.00°N, 107.00°EKaili — 26.75°N, 108.41°EKaili — 26.65°N, 108.70°EBurgess Shale — 51.44°N, 116.47°WBurgess Shale — 51.38°N, 116.43°WStephen — 51.40°N, 116.48°WStephen — 52.24°N, 117.28°WWheeler Shale — 39.36°N, 111.59°WWheeler Shale — 39.20°N, 113.30°WWheeler Shale — 39.36°N, 113.28°WWheeler Shale — 39.29°N, 113.31°WAntelope Valley — 36.88°N, 116.67°WAntelope Valley — 39.60°N, 116.26°WAntelope Valley — 36.78°N, 115.89°WTongzi — 28.00°N, 107.00°ETongzi — 29.00°N, 107.00°EBalang — 26.65°N, 107.95°EBalang — 27.17°N, 108.54°EBalang — 28.37°N, 109.34°EDay Point — 44.61°N, 73.41°WDay Point — 44.94°N, 73.45°WEmyaksin — 70.72°N, 112.88°EEmyaksin — 70.22°N, 113.70°ECluse de l’Orb — 43.48°N, 3.04°ECarrara — 39.16°N, 119.83°WCarrara — 37.57°N, 115.76°WCarrara — 36.48°N, 116.73°WRanken Limestone — 19.63°S, 136.92°EPilgrim — 44.66°N, 111.10°WLaval — 47.00°N, 72.00°WLaval — 45.48°N, 73.90°WMingan — 50.20°N, 63.50°WMingan — 50.20°N, 63.67°WBenbolt — 36.28°N, 83.58°WBenbolt — 36.19°N, 83.93°W

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The named rock units Eocrinoidea has been recovered from, largest first. Drawn where the rock is now, not where it formed. 76 further formations hold fewer occurrences each and are not listed. 10 occurrences have no formation on record, which is common for older literature.

Eocrinoidea and its relatives

Cambrian

Where Eocrinoidea and its relatives were recorded in the Cambrian.

Found in the same rock

1,967 taxa

The Paleobiology Database records 217 sites for Eocrinoidea, 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

120 references

Each of the 272 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. 108 further references are not listed. 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 Eocrinoidea

Credit
Wilson44691 at English Wikipedia
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Eocrinoidea 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.

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 itBlastozoa through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Jaekel 1918