Acrocidaris

Acrocidaris

via iDigBio · CC BY · via iDigBio. 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
PseudodiadematidaePBDB
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 25 million years on record.

The record covers at least 157.9 Mya to 132.6 Mya. No occurrence read is dated outside 161.5 Mya to 125.77 Mya.

Middle Jurassic — about 0 of 13 occurrencesLate Jurassic — about 10 of 13 occurrencesLate JurassicEarly Cretaceous — about 3 of 13 occurrencesEarly Cretaceous162–161 Mya — about 0.2 occurrences161–160 Mya — about 0.6 occurrences160–158 Mya — about 1 occurrence158–157 Mya — about 1 occurrence157–156 Mya — about 0.6 occurrences156–155 Mya — about 0.6 occurrences155–154 Mya — about 0.7 occurrences154–152 Mya — about 0.7 occurrences152–151 Mya — about 0.6 occurrences151–150 Mya — about 0.6 occurrences150–149 Mya — about 0.8 occurrences149–147 Mya — about 0.9 occurrences147–146 Mya — about 0.9 occurrences146–145 Mya — about 0.8 occurrences137–136 Mya — about 0.4 occurrences136–135 Mya — about 0.6 occurrences135–134 Mya — about 0.6 occurrences134–132 Mya — about 0.5 occurrences132–131 Mya — about 0.2 occurrences131–130 Mya — about 0.2 occurrences130–129 Mya — about 0.2 occurrences129–128 Mya — about 0.2 occurrences128–126 Mya — about 0.2 occurrences126–125 Mya — about 0.1 occurrences157.9 Mya132.6 Mya162.2 Mya125.1 Mya

13 occurrences of Acrocidaris 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

13 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

4 formations

Hanifa — 23.90°N, 46.28°EHanifa — 22.60°N, 46.37°EHanifa — 25.63°N, 45.67°EVuache — 46.83°N, 6.52°ESt-Ursanne — 47.37°N, 7.17°EMassenkalk — 48.89°N, 11.94°E

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The named rock units Acrocidaris has been recovered from, largest first. Drawn where the rock is now, not where it formed. 7 occurrences have no formation on record, which is common for older literature.

Acrocidaris and its relatives

Late Jurassic

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

Found in the same rock

469 taxa

The Paleobiology Database records 13 sites for Acrocidaris, 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

10 references

Each of the 13 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 Acrocidaris

Source
iDigBio
Credit
via iDigBio
Licence
CC BY
Commercial use
the licence allows it

No 3D scan of Acrocidaris 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.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itPseudodiadematidae through timeFormations of the Late JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.