Hesperocidaris

Hesperocidaris

Stefan Countryman · CC0 · via Wikidata/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
CidaridaePBDB
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 1.7 million years on record.

The record covers at least 5.333 Mya to 3.6 Mya. No occurrence read is dated outside 23.04 Mya to 2.58 Mya.

Oligocene — about 0 of 3 occurrencesMiocene — about 2 of 3 occurrencesMiocenePliocene — about 1 of 3 occurrencesPliocenePleistocene — about 0 of 3 occurrences24–23 Mya — about 0.0 occurrences23–22 Mya — about 0.0 occurrences22–21 Mya — about 0.0 occurrences21–21 Mya — about 0.0 occurrences21–20 Mya — about 0.0 occurrences20–19 Mya — about 0.0 occurrences19–19 Mya — about 0.0 occurrences19–18 Mya — about 0.0 occurrences18–17 Mya — about 0.0 occurrences17–16 Mya — about 0.0 occurrences16–16 Mya — about 0.0 occurrences16–15 Mya — about 0.0 occurrences15–14 Mya — about 0.0 occurrences14–14 Mya — about 0.0 occurrences14–13 Mya — about 0.0 occurrences13–12 Mya — about 0.0 occurrences12–11 Mya — about 0.1 occurrences11–11 Mya — about 0.2 occurrences11–9.9 Mya — about 0.2 occurrences9.9–9.2 Mya — about 0.2 occurrences9.2–8.5 Mya — about 0.2 occurrences8.5–7.8 Mya — about 0.2 occurrences7.8–7.1 Mya — about 0.2 occurrences7.1–6.4 Mya — about 0.2 occurrences6.4–5.7 Mya — about 0.2 occurrences5.7–4.9 Mya — about 0.1 occurrences4.2–3.5 Mya — about 0.1 occurrences3.5–2.8 Mya — about 0.7 occurrences2.8–2.1 Mya — about 0.2 occurrences5.333 Mya – 3.6 Mya23.5 Mya2.1 Mya

3 occurrences of Hesperocidaris on record. 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

1 formation

San Diego — 32.54°N, 117.11°W

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The named rock units Hesperocidaris has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Found in the same rock

138 taxa

The Paleobiology Database records 3 sites for Hesperocidaris, 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content2

Picture of Hesperocidaris

Credit
Stefan Countryman
Licence
CC0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itCidaridae through timeThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Mortensen 1928