Polycidaris spinosa

No picture of Polycidaris spinosa was found. Wikidata and iDigBio were searched and had none. Wikipedia and 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 Polycidaris spinosa, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
PolycidarisPBDB
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 4.2 million years on record.

Every occurrence read is dated to somewhere between 159 Mya and 154.8 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Jurassic — about 3 of 3 occurrencesLate Jurassic159–159 Mya — about 0.0 occurrences159–159 Mya — about 0.3 occurrences159–159 Mya — about 0.3 occurrences159–158 Mya — about 0.3 occurrences158–158 Mya — about 0.3 occurrences158–158 Mya — about 0.3 occurrences158–158 Mya — about 0.3 occurrences158–158 Mya — about 0.1 occurrences158–158 Mya — about 0.1 occurrences158–157 Mya — about 0.1 occurrences157–157 Mya — about 0.1 occurrences157–157 Mya — about 0.1 occurrences157–157 Mya — about 0.1 occurrences157–157 Mya — about 0.1 occurrences157–157 Mya — about 0.1 occurrences157–156 Mya — about 0.1 occurrences156–156 Mya — about 0.1 occurrences156–156 Mya — about 0.1 occurrences156–156 Mya — about 0.1 occurrences156–156 Mya — about 0.1 occurrences156–156 Mya — about 0.1 occurrences156–155 Mya — about 0.1 occurrences155–155 Mya — about 0.1 occurrences155–155 Mya — about 0.1 occurrences155–155 Mya — about 0.1 occurrences155–155 Mya — about 0.0 occurrences159.5 Mya154.3 Mya

3 occurrences of Polycidaris spinosa 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

3 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

2 formations

Wildegg — 47.43°N, 8.18°ETheoi Marls — 46.40°N, 0.06°W

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The named rock units Polycidaris spinosa has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Polycidaris spinosa and its relatives

Late Jurassic

Where Polycidaris spinosa and its relatives were recorded in the Late Jurassic.

Found in the same rock

48 taxa

The Paleobiology Database records 3 sites for Polycidaris spinosa, 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

2 references

Each of the 3 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 Polycidaris spinosa was found. Wikidata and iDigBio were searched and had none.

Wikipedia and 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 Polycidaris spinosa, or no answer at all. This entry cannot say which.

No 3D scan of Polycidaris spinosa 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 itPolycidaris through timeFormations of the Late JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Agassiz 1840)