Paracidaris

Paracidaris

Uncredited · 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
PolycidaridaePBDB
Diet
grazer, omnivorePBDB, for Cidaroida
Life habit
low-level epifaunalPBDB, for Cidaroida
Motility
slow-movingPBDB, for Cidaroida
Vision
limitedPBDB, for Echinoidea
Environment
marinePBDB, for Cidaroida

Time the record covers

At least 57 million years on record.

The record covers at least 170.9 Mya to 113.2 Mya. No occurrence read is dated outside 174.7 Mya to 100.5 Mya.

Early Jurassic — about 0 of 110 occurrencesMiddle Jurassic — about 19 of 110 occurrencesMiddle JurassicLate Jurassic — about 90 of 110 occurrencesLate JurassicEarly Cretaceous — about 1 of 110 occurrencesEarly CretaceousLate Cretaceous — about 0 of 110 occurrences176–174 Mya — about 1 occurrence174–171 Mya — about 3 occurrences171–168 Mya — about 12 occurrences168–166 Mya — about 3 occurrences166–163 Mya — about 0.4 occurrences163–161 Mya — about 0.8 occurrences161–158 Mya — about 51 occurrences158–156 Mya — about 24 occurrences156–153 Mya — about 5 occurrences153–150 Mya — about 5 occurrences150–148 Mya — about 3 occurrences148–145 Mya — about 0.1 occurrences145–143 Mya — about 0.1 occurrences114–112 Mya — about 0.1 occurrences112–109 Mya — about 0.2 occurrences109–107 Mya — about 0.2 occurrences107–104 Mya — about 0.2 occurrences104–102 Mya — about 0.2 occurrences102–99 Mya — about 0.1 occurrences170.9 Mya113.2 Mya176 Mya99 Mya

110 occurrences of Paracidaris 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

110 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

24 formations

Coralline Oolite — 51.76°N, 1.12°WCoralline Oolite — 51.44°N, 2.00°WCoralline Oolite — 51.76°N, 1.20°WCoralline Oolite — 52.31°N, 0.26°WCoralline Oolite — 54.26°N, 0.47°WCoralline Oolite — 54.13°N, 0.79°WCoralline Oolite — 51.83°N, 1.01°WCoralline Oolite — 51.31°N, 2.13°WCoralline Oolite — 51.51°N, 1.95°WCoralline Oolite — 51.66°N, 1.58°WCoralline Oolite — 54.17°N, 0.98°WBärschwil — 47.40°N, 7.42°EBärschwil — 47.38°N, 7.47°EBärschwil — 47.45°N, 7.59°EBärschwil — 47.32°N, 7.18°EBärschwil — 47.33°N, 7.45°EBärschwil — 47.41°N, 7.31°EBärschwil — 47.30°N, 7.08°EBärschwil — 47.38°N, 7.05°ESt-Ursanne — 47.39°N, 7.40°ESt-Ursanne — 47.43°N, 7.33°ESt-Ursanne — 47.44°N, 7.51°ESt-Ursanne — 47.38°N, 7.21°ESt-Ursanne — 47.33°N, 7.13°EWildegg — 47.42°N, 8.15°EBirdlip Limestone — 51.85°N, 2.10°WWest Walton — 52.18°N, 0.12°EWest Walton — 52.26°N, 0.07°WAbadia — 38.93°N, 9.00°WMarnes à coraux de Foug — 48.68°N, 5.78°ELiegende Bankkalk — 48.12°N, 8.87°ELincolnshire Limestone — 52.99°N, 0.54°WOsmington Oolite — 50.60°N, 2.46°WOsmington Oolite — 50.63°N, 2.34°WNusplingen Limestone — 48.12°N, 8.87°ENusplinger Plattenkalk — 48.71°N, 10.16°ENusplinger Plattenkalk — 48.12°N, 8.87°EBerkshire Oolite — 51.78°N, 1.18°WLower Calcareous Grit — 51.75°N, 1.25°WCoral Rag — 51.77°N, 1.25°WHumeralis Schichten — 47.47°N, 7.37°ECalcaire d’Audun-le-Tiche — 49.47°N, 6.02°EMt. Lysa — 51.26°N, 21.06°ESalperton Limestone — 51.74°N, 2.21°WRingstead — 50.63°N, 2.34°WKingston — 51.58°N, 1.88°WAmpthill Clay — 52.03°N, 0.49°WHudspeth — 44.60°N, 120.17°W

Loading coastlines…

The named rock units Paracidaris has been recovered from, largest first. Drawn where the rock is now, not where it formed. 21 occurrences have no formation on record, which is common for older literature.

Paracidaris and its relatives

Late Jurassic

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

Found in the same rock

481 taxa

The Paleobiology Database records 94 sites for Paracidaris, 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

21 references

Each of the 110 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. 9 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 content2

Picture of Paracidaris

Credit
nobody named on the record
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itPolycidaridae through timeFormations of the Late JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.