Strongylocentrotus intermedius

Strongylocentrotus intermedius is a species of sea urchin described by Alexander Agassiz in 1864.

Strongylocentrotus intermedius

Totti · CC BY-SA 4.0 · via Wikipedia/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
StrongylocentrotusPBDB
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 most 2.8 million years on record.

The one occurrence read is dated to somewhere between 5.333 Mya and 2.58 Mya, which is a dating window rather than a span.

Miocene — about 0 of 1 occurrencePliocene — about 1 of 1 occurrencePliocenePleistocene — about 0 of 1 occurrence5.3–5.2 Mya — about 0.0 occurrences5.2–5.1 Mya — about 0.0 occurrences5.1–5.0 Mya — about 0.0 occurrences5.0–4.8 Mya — about 0.0 occurrences4.8–4.7 Mya — about 0.0 occurrences4.7–4.6 Mya — about 0.0 occurrences4.6–4.5 Mya — about 0.0 occurrences4.5–4.3 Mya — about 0.0 occurrences4.3–4.2 Mya — about 0.0 occurrences4.2–4.1 Mya — about 0.0 occurrences4.1–4.0 Mya — about 0.0 occurrences4.0–3.8 Mya — about 0.0 occurrences3.8–3.7 Mya — about 0.0 occurrences3.7–3.6 Mya — about 0.0 occurrences3.6–3.5 Mya — about 0.0 occurrences3.5–3.3 Mya — about 0.0 occurrences3.3–3.2 Mya — about 0.0 occurrences3.2–3.1 Mya — about 0.0 occurrences3.1–3.0 Mya — about 0.0 occurrences3.0–2.8 Mya — about 0.0 occurrences2.8–2.7 Mya — about 0.0 occurrences2.7–2.6 Mya — about 0.0 occurrences5.83 Mya2.08 Mya

1 occurrence of Strongylocentrotus intermedius on record, most of them in the Pliocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

1 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

Setana — 41.18°N, 141.27°E

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

Strongylocentrotus intermedius and its relatives

Pliocene

Where Strongylocentrotus intermedius and its relatives were recorded in the Pliocene.

Found in the same rock

No other named taxon is catalogued from that site.

The Paleobiology Database records 1 site for Strongylocentrotus intermedius, and this reads all of them.

Entered from

1 reference

Each of the 1 occurrence 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 Strongylocentrotus intermedius

Credit
Totti
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Strongylocentrotus intermedius 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.

The description on this site

Licence
CC BY-SA 4.0

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

Keep going

What may have been alongside itStrongylocentrotus through timeFormations of the PlioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Barn 1863)