Heterocidaris

No picture of Heterocidaris was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Heterocidaris, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
HeterocidaridaePBDB
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 most 13 million years on record.

Every occurrence read is dated to somewhere between 180.4 Mya and 168.2 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Early Jurassic — about 1 of 8 occurrencesEarly JurassicMiddle Jurassic — about 7 of 8 occurrencesMiddle Jurassic180–180 Mya — about 0.0 occurrences180–180 Mya — about 0.0 occurrences180–179 Mya — about 0.0 occurrences179–179 Mya — about 0.0 occurrences179–178 Mya — about 0.0 occurrences178–178 Mya — about 0.0 occurrences178–177 Mya — about 0.0 occurrences177–177 Mya — about 0.0 occurrences177–177 Mya — about 0.0 occurrences177–176 Mya — about 0.0 occurrences176–176 Mya — about 0.0 occurrences176–175 Mya — about 0.0 occurrences175–175 Mya — about 0.0 occurrences175–174 Mya — about 0.4 occurrences174–174 Mya — about 0.5 occurrences174–173 Mya — about 0.5 occurrences173–173 Mya — about 0.5 occurrences173–173 Mya — about 0.5 occurrences173–172 Mya — about 0.5 occurrences172–172 Mya — about 0.5 occurrences172–171 Mya — about 0.5 occurrences171–171 Mya — about 0.5 occurrences171–170 Mya — about 0.6 occurrences170–170 Mya — about 0.6 occurrences170–169 Mya — about 0.6 occurrences169–169 Mya — about 0.6 occurrences169–169 Mya — about 0.6 occurrences169–168 Mya — about 0.3 occurrences180.9 Mya167.7 Mya

8 occurrences of Heterocidaris on record, most of them in the Middle 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

8 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

3 formations

Dogger — 54.40°N, 0.48°WCalcaire d’Audun-le-Tiche — 49.47°N, 6.02°EBirdlip Limestone — 51.85°N, 2.10°W

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The named rock units Heterocidaris has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 occurrences have no formation on record, which is common for older literature.

Heterocidaris and its relatives

Middle Jurassic

Where Heterocidaris and its relatives were recorded in the Middle Jurassic.

Found in the same rock

75 taxa

The Paleobiology Database records 8 sites for Heterocidaris, 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

4 references

Each of the 8 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 content0

No picture of Heterocidaris was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Heterocidaris, or no answer at all. This entry cannot say which.

No 3D scan of Heterocidaris 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 itHeterocidaridae through timeFormations of the Middle JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.