Cidaris

Cidaris is a genus of pencil sea urchins.

Cidaris

Didier Descouens · CC BY-SA 3.0 · 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
CidaridaePBDB
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 244 million years on record.

The record covers at least 245.19 Mya to 774 ka. No occurrence read is dated outside 251.902 Mya to 11.7 ka.

Permian — about 0 of 395 occurrencesEarly Triassic — about 0 of 395 occurrencesMiddle Triassic — about 69 of 395 occurrencesLate Triassic — about 92 of 395 occurrencesLate TriassicEarly Jurassic — about 3 of 395 occurrencesEarly JurassicMiddle Jurassic — about 8 of 395 occurrencesLate Jurassic — about 34 of 395 occurrencesEarly Cretaceous — about 60 of 395 occurrencesEarly CretaceousLate Cretaceous — about 21 of 395 occurrencesLate CretaceousPaleocene — about 21 of 395 occurrencesEocene — about 49 of 395 occurrencesEoceneOligocene — about 7 of 395 occurrencesMiocene — about 23 of 395 occurrencesPliocene — about 4 of 395 occurrencesPleistocene — about 4 of 395 occurrences257–248 Mya — about 0.1 occurrences248–240 Mya — about 60 occurrences240–231 Mya — about 71 occurrences231–223 Mya — about 16 occurrences223–214 Mya — about 2 occurrences214–206 Mya — about 2 occurrences206–197 Mya — about 11 occurrences197–188 Mya — about 1 occurrence188–180 Mya — about 0.6 occurrences180–171 Mya — about 2 occurrences171–163 Mya — about 6 occurrences163–154 Mya — about 28 occurrences154–146 Mya — about 6 occurrences146–137 Mya — about 2 occurrences137–128 Mya — about 19 occurrences128–120 Mya — about 17 occurrences120–111 Mya — about 19 occurrences111–103 Mya — about 2 occurrences103–94 Mya — about 10 occurrences94–86 Mya — about 2 occurrences86–77 Mya — about 4 occurrences77–69 Mya — about 4 occurrences69–60 Mya — about 12 occurrences60–51 Mya — about 14 occurrences51–43 Mya — about 7 occurrences43–34 Mya — about 37 occurrences34–26 Mya — about 6 occurrences26–17 Mya — about 10 occurrences17–8.6 Mya — about 11 occurrences8.6–0 Mya — about 12 occurrences245.19 Mya774 ka257 Mya0 Mya

395 occurrences of Cidaris on record, most of them in the Late Triassic. The Paleobiology Database records this as a living group. 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

395 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

86 formations

Cassian — 46.54°N, 11.62°ECassian — 46.64°N, 12.20°ECassian — 46.52°N, 11.96°ECassian — 46.68°N, 12.15°ECassian — 46.53°N, 11.92°ECassian — 46.47°N, 12.07°ECassian — 46.48°N, 11.81°ECassian — 46.60°N, 12.26°EQingyan — 26.33°N, 106.68°ECoral Rag de Trouville — 49.32°N, 0.03°ECoral Rag de Trouville — 48.60°N, 0.63°ECoral Rag de Trouville — 49.30°N, 0.07°WCoral Rag de Trouville — 49.37°N, 0.08°ESantee Limestone — 33.33°N, 80.15°WSantee Limestone — 33.45°N, 80.16°WSantee Limestone — 33.51°N, 80.49°WSantee Limestone — 33.41°N, 80.10°WSantee Limestone — 33.33°N, 79.69°WCastle Hayne — 34.64°N, 77.65°WCastle Hayne — 34.37°N, 77.86°WCastle Hayne — 34.44°N, 77.83°WCastle Hayne — 34.80°N, 78.02°WCastle Hayne — 35.01°N, 77.57°WCastle Hayne — 34.23°N, 77.94°WPantano — 44.46°N, 10.57°EPantano — 44.48°N, 10.80°EPantano — 44.49°N, 10.72°EPantano — 44.49°N, 10.51°EPantano — 44.34°N, 10.45°EPantano — 44.27°N, 10.95°EPantano — 44.42°N, 10.96°EPantano — 44.24°N, 11.00°EPantano — 44.30°N, 11.34°EPantano — 44.24°N, 10.95°EPelsonian-Lower Illyrian — 48.47°N, 20.52°EVincentown — 39.97°N, 74.68°WVincentown — 39.94°N, 74.75°WVincentown — 39.88°N, 75.13°WVincentown — 39.93°N, 74.75°WClaiborne Sand — 31.53°N, 87.50°WSandgate — 51.23°N, 0.58°WSandgate — 51.67°N, 1.58°WSandgate — 51.35°N, 2.08°WCalcare di Zu — 45.85°N, 9.42°ERaibl — 47.35°N, 11.32°ERaibl — 47.33°N, 11.46°ERaibl — 47.36°N, 11.48°ERaibl — 47.26°N, 9.93°EVuache — 46.83°N, 6.52°EClayton — 31.71°N, 85.61°WClayton — 32.05°N, 86.78°WCoral Rag — 51.75°N, 1.25°WCoral Rag — 53.98°N, 1.53°WSalt Mountain Limestone — 31.43°N, 87.92°WMarnes de Foncouverte — 43.17°N, 2.70°EMarnes de Foncouverte — 43.15°N, 2.57°EBarranquín — 8.96°N, 63.55°WZone de Pierre jaune — 47.05°N, 7.08°EHolywell Nodular Chalk — 51.25°N, 0.15°WTupelo Bay — 33.25°N, 80.45°WTupelo Bay — 33.47°N, 80.49°WKoronia — 35.08°N, 33.17°EKoronia — 35.05°N, 33.10°EBrèches rouges de Carboneras — 37.60°N, 1.32°WRisan Aneiza — 31.00°N, 33.50°ERisan Aneiza — 30.79°N, 33.48°E

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The named rock units Cidaris has been recovered from, largest first. Drawn where the rock is now, not where it formed. 62 further formations hold fewer occurrences each and are not listed. 132 occurrences have no formation on record, which is common for older literature.

Cidaris and its relatives

Late Triassic

Where Cidaris and its relatives were recorded in the Late Triassic.

Found in the same rock

3,420 taxa

The Paleobiology Database records 269 sites for Cidaris, and this reads 240 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

131 references

Each of the 395 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. 119 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 content3

Picture of Cidaris

Credit
Didier Descouens
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

Photogrammetry

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
cidaris venulosa · MST:PALEO:MST-SP-628

3D model

Source
Sketchfab
Licence
CC Attribution-NonCommercial-ShareAlike
Commercial use
the licence does not allow it

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 itCidaridae through timeFormations of the Late TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Leske 1778