Diplocidaris

Diplocidaris is an extinct genus of sea urchins belonging to the family Diplocidaridae. The type species of this genus is Cidaris gigantea Agassiz, 1840.

Diplocidaris

Hectonichus · 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
DiplocidaridaePBDB
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 33 million years on record.

The record covers at least 182.9 Mya to 149.2 Mya. No occurrence read is dated outside 184.2 Mya to 145.06 Mya.

Early Jurassic — about 3 of 28 occurrencesEarly JurassicMiddle Jurassic — about 8 of 28 occurrencesMiddle JurassicLate Jurassic — about 18 of 28 occurrencesLate Jurassic185–184 Mya — about 0.5 occurrences184–182 Mya — about 0.8 occurrences182–181 Mya — about 0.2 occurrences181–180 Mya — about 0.2 occurrences180–178 Mya — about 0.2 occurrences178–177 Mya — about 0.2 occurrences177–175 Mya — about 0.2 occurrences175–174 Mya — about 0.5 occurrences174–173 Mya — about 0.8 occurrences173–171 Mya — about 0.8 occurrences171–170 Mya — about 2 occurrences170–169 Mya — about 2 occurrences169–167 Mya — about 1 occurrence167–166 Mya — about 0.5 occurrences166–165 Mya — about 0.3 occurrences165–163 Mya — about 0.1 occurrences163–162 Mya — about 0.1 occurrences162–161 Mya — about 0.1 occurrences161–159 Mya — about 0.1 occurrences159–158 Mya — about 11 occurrences158–156 Mya — about 0.6 occurrences156–155 Mya — about 0.6 occurrences155–154 Mya — about 1 occurrence154–152 Mya — about 2 occurrences152–151 Mya — about 0.6 occurrences151–150 Mya — about 0.5 occurrences150–148 Mya — about 0.4 occurrences148–147 Mya — about 0.3 occurrences147–146 Mya — about 0.3 occurrences146–144 Mya — about 0.1 occurrences182.9 Mya149.2 Mya185 Mya144.3 Mya

28 occurrences of Diplocidaris 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

28 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

8 formations

Bärschwil — 47.40°N, 7.42°EBärschwil — 47.38°N, 7.47°EBärschwil — 47.33°N, 7.45°ESt-Ursanne — 47.39°N, 7.40°ESt-Ursanne — 47.31°N, 7.11°EAbadia — 38.93°N, 9.00°WAbadia — 38.98°N, 9.07°WBeacon Limestone — 52.08°N, 1.41°WBeacon Limestone — 50.92°N, 2.91°WGünsberg-Schichten — 47.33°N, 7.60°EMarnes à coraux de Foug — 48.68°N, 5.78°EMaes Knoll Conglomerate — 51.39°N, 2.63°WBirdlip Limestone — 51.85°N, 2.10°W

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The named rock units Diplocidaris has been recovered from, largest first. Drawn where the rock is now, not where it formed. 10 occurrences have no formation on record, which is common for older literature.

Diplocidaris and its relatives

Late Jurassic

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

Found in the same rock

223 taxa

The Paleobiology Database records 25 sites for Diplocidaris, 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

11 references

Each of the 28 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. 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 Diplocidaris

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

No 3D scan of Diplocidaris was found in Sketchfab.

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 itDiplocidaridae through timeFormations of the Late JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.