Pseudocidaris

Pseudocidaris

Didier Descouens · CC BY-SA 4.0 · via Wikidata/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
HemicidaridaePBDB
Diet
grazer, deposit feederPBDB, for Echinoidea
Life habit
epifaunalPBDB, for Echinoidea
Motility
actively mobilePBDB, for Echinoidea
Vision
limitedPBDB, for Echinoidea
Environment
marinePBDB, for Echinodermata

Time the record covers

At least 49 million years on record.

The record covers at least 168.6 Mya to 119.57 Mya. No occurrence read is dated outside 170.9 Mya to 113.2 Mya.

Middle Jurassic — about 36 of 108 occurrencesMiddle JurassicLate Jurassic — about 58 of 108 occurrencesLate JurassicEarly Cretaceous — about 14 of 108 occurrencesEarly Cretaceous172–170 Mya — about 0.8 occurrences170–168 Mya — about 2 occurrences168–166 Mya — about 6 occurrences166–164 Mya — about 10 occurrences164–162 Mya — about 13 occurrences162–160 Mya — about 7 occurrences160–158 Mya — about 5 occurrences158–156 Mya — about 5 occurrences156–154 Mya — about 8 occurrences154–152 Mya — about 13 occurrences152–150 Mya — about 9 occurrences150–148 Mya — about 6 occurrences148–146 Mya — about 4 occurrences146–144 Mya — about 3 occurrences144–142 Mya — about 0.4 occurrences142–140 Mya — about 0.1 occurrences140–138 Mya — about 0.1 occurrences138–136 Mya — about 0.1 occurrences136–134 Mya — about 0.1 occurrences134–132 Mya — about 0.9 occurrences132–130 Mya — about 3 occurrences130–128 Mya — about 3 occurrences128–126 Mya — about 3 occurrences126–124 Mya — about 0.8 occurrences124–122 Mya — about 0.5 occurrences122–120 Mya — about 0.3 occurrences120–118 Mya — about 0.5 occurrences118–116 Mya — about 0.6 occurrences116–114 Mya — about 0.6 occurrences114–112 Mya — about 0.2 occurrences168.6 Mya119.57 Mya172 Mya112 Mya

108 occurrences of Pseudocidaris on record, most of them in the Late Jurassic. 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

108 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

20 formations

Dhruma — 24.23°N, 46.58°EDhruma — 24.89°N, 46.58°EDhruma — 23.97°N, 46.17°EDhruma — 24.75°N, 46.00°EDhruma — 25.05°N, 45.67°EDhruma — 25.17°N, 45.50°EDhruma — 25.53°N, 45.00°EDhruma — 24.75°N, 46.08°EDhruma — 26.33°N, 44.83°ETataouine — 33.00°N, 10.47°EHanifa — 22.60°N, 46.37°EHanifa — 22.40°N, 46.95°EHanifa — 24.95°N, 46.15°EHanifa — 25.63°N, 45.67°EHanifa — 26.03°N, 45.17°EHanifa — 25.17°N, 46.24°EAlcobaca — 39.32°N, 9.35°WAlcobaca — 38.42°N, 9.22°WAlcobaca — 39.52°N, 9.13°WSobral — 39.10°N, 9.27°WSobral — 38.97°N, 9.10°WAlcobaça — 39.52°N, 9.13°WAlcobaça — 39.55°N, 8.98°WTuwaiq Mt.Lst. — 25.05°N, 45.67°EPteroceriano — 38.93°N, 9.13°WAmaral — 39.02°N, 9.12°WTamanar — 31.40°N, 9.68°WNaifa — 14.31°N, 48.48°ETuwaiq Mountain Limestone — 25.75°N, 45.17°EXiaqiongco — 31.75°N, 89.50°ECalcaires récifaux — 38.81°N, 9.47°WAbadia — 38.98°N, 9.07°WCalcaires à Polypiers de Lagosteiros — 38.40°N, 9.22°WMt. Lysa — 51.26°N, 21.06°EBahamite sequence — 53.77°N, 14.08°EHiraiga — 39.93°N, 141.95°EMassenkalk — 48.89°N, 11.94°E

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The named rock units Pseudocidaris has been recovered from, largest first. Drawn where the rock is now, not where it formed. 34 occurrences have no formation on record, which is common for older literature.

Pseudocidaris and its relatives

Late Jurassic

Where Pseudocidaris and its relatives were recorded in the Late Jurassic.

Found in the same rock

791 taxa

The Paleobiology Database records 87 sites for Pseudocidaris, 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

23 references

Each of the 108 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. 11 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 Pseudocidaris

Credit
Didier Descouens
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Pseudocidaris 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 itHemicidaridae through timeFormations of the Late JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.