Plegiocidaris

Plegiocidaris is an extinct genus of echinoids that lived from the Triassic to the Early Cretaceous. Its remains have been found in Asia and Europe. It was named by the paleontologist Auguste Pomel.

Plegiocidaris

Gorjablanc · CC BY-SA 4.0 · 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
CidarideaPBDB
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 185 million years on record.

The record covers at least 201.4 Mya to 15.98 Mya. No occurrence read is dated outside 251.902 Mya to 11.63 Mya.

Permian — about 0 of 65 occurrencesEarly Triassic — about 0 of 65 occurrencesMiddle Triassic — about 0 of 65 occurrencesLate Triassic — about 1 of 65 occurrencesLate TriassicEarly Jurassic — about 0 of 65 occurrencesMiddle Jurassic — about 19 of 65 occurrencesLate Jurassic — about 35 of 65 occurrencesEarly Cretaceous — about 9 of 65 occurrencesEarly CretaceousLate Cretaceous — about 0 of 65 occurrencesPaleocene — about 0 of 65 occurrencesEocene — about 0 of 65 occurrencesOligocene — about 0 of 65 occurrencesMiocene — about 1 of 65 occurrences257–248 Mya — about 0.1 occurrences248–240 Mya — about 0.2 occurrences240–232 Mya — about 0.2 occurrences232–223 Mya — about 0.2 occurrences223–215 Mya — about 0.2 occurrences215–207 Mya — about 0.2 occurrences207–198 Mya — about 0.1 occurrences173–165 Mya — about 11 occurrences165–157 Mya — about 31 occurrences157–148 Mya — about 9 occurrences148–140 Mya — about 3 occurrences140–132 Mya — about 4 occurrences132–123 Mya — about 5 occurrences23–15 Mya — about 0.2 occurrences15–6.8 Mya — about 0.8 occurrences201.4 Mya15.98 Mya257 Mya7 Mya

65 occurrences of Plegiocidaris 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

65 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

19 formations

Bärschwil — 47.40°N, 7.42°EBärschwil — 47.38°N, 7.47°EBärschwil — 47.33°N, 7.45°EBärschwil — 47.41°N, 7.31°EBärschwil — 47.30°N, 7.08°EBärschwil — 47.25°N, 7.00°EForest Marble — 51.83°N, 1.24°WForest Marble — 51.34°N, 2.25°WForest Marble — 51.69°N, 2.03°WForest Marble — 50.61°N, 2.51°WForest Marble — 51.71°N, 1.78°WDhruma — 24.23°N, 46.58°EDhruma — 24.89°N, 46.58°EDhruma — 25.05°N, 45.67°EDhruma — 24.75°N, 46.08°EWildegg — 47.43°N, 8.18°EYamama — 24.04°N, 47.28°EShuqra — 14.32°N, 48.45°ETichilesti — 44.42°N, 28.48°EGünsberg-Schichten — 47.33°N, 7.60°ECouches à Spérites — 47.98°N, 4.85°EMarnes de Latrecey — 47.98°N, 4.85°EAbadia — 38.98°N, 9.07°WMarnes à coraux de Foug — 48.68°N, 5.78°EPietra Leccese — 40.38°N, 18.18°ELa Manga — 35.80°S, 69.78°WLiegende Bankkalk — 48.12°N, 8.87°ETheoi Marls — 46.40°N, 0.06°WSt-Ursanne — 47.44°N, 7.51°ENusplingen Limestone — 48.13°N, 8.88°ENusplinger Plattenkalk — 48.13°N, 8.88°E

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The named rock units Plegiocidaris has been recovered from, largest first. Drawn where the rock is now, not where it formed. 25 occurrences have no formation on record, which is common for older literature.

Plegiocidaris and its relatives

Late Jurassic

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

Found in the same rock

709 taxa

The Paleobiology Database records 61 sites for Plegiocidaris, 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

32 references

Each of the 65 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. 20 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 Plegiocidaris

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

3D model

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

Smithsonian Open Access and MorphoSource were 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 itCidaridea through timeFormations of the Late JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Pomel 1883