Isechinus praecursor

Isechinus praecursor

via iDigBio · CC0 · 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
IsechinusPBDB
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 27 million years on record.

The record covers at least 48 Mya to 20.45 Mya. No occurrence read is dated outside 56 Mya to 2.58 Mya.

Paleocene — about 0 of 5 occurrencesEocene — about 2 of 5 occurrencesEoceneOligocene — about 2 of 5 occurrencesOligoceneMiocene — about 2 of 5 occurrencesMiocenePliocene — about 0 of 5 occurrencesPleistocene — about 0 of 5 occurrences57–55 Mya — about 0.1 occurrences55–53 Mya — about 0.2 occurrences53–52 Mya — about 0.2 occurrences52–50 Mya — about 0.2 occurrences50–48 Mya — about 0.2 occurrences39–37 Mya — about 0.2 occurrences37–35 Mya — about 0.4 occurrences35–33 Mya — about 0.4 occurrences33–31 Mya — about 0.4 occurrences31–29 Mya — about 0.4 occurrences29–27 Mya — about 0.4 occurrences27–26 Mya — about 0.1 occurrences26–24 Mya — about 0.1 occurrences24–22 Mya — about 0.1 occurrences22–20 Mya — about 0.2 occurrences20–18 Mya — about 0.5 occurrences18–16 Mya — about 0.5 occurrences16–14 Mya — about 0.1 occurrences14–13 Mya — about 0.1 occurrences13–11 Mya — about 0.1 occurrences11–8.9 Mya — about 0.1 occurrences8.9–7.1 Mya — about 0.1 occurrences7.1–5.2 Mya — about 0.1 occurrences5.2–3.4 Mya — about 0.1 occurrences3.4–1.5 Mya — about 0.0 occurrences48 Mya20.45 Mya57 Mya2 Mya

5 occurrences of Isechinus praecursor on record, most of them in the Eocene. 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

5 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

San Julian — 46.87°S, 66.95°WSan Julian — 47.08°S, 66.70°WCasamayor — 47.72°S, 66.70°WEl Chacay — 48.25°S, 71.50°W

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The named rock units Isechinus praecursor has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Isechinus praecursor and its relatives

Eocene

Where Isechinus praecursor and its relatives were recorded in the Eocene.

Found in the same rock

45 taxa

The Paleobiology Database records 3 sites for Isechinus praecursor, 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 5 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 content1

Picture of Isechinus praecursor

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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

Keep going

What may have been alongside itIsechinus through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Ortmann 1900)