Balanus (Hesperibalanus) proinus

Balanus proteus Conrad, 1834, a relative of Balanus (Hesperibalanus) proinus — not Balanus (Hesperibalanus) proinus itself

Not Balanus (Hesperibalanus) proinus. This is Balanus proteus Conrad, 1834, a relative — both are Balanidae.

via GBIF · CC BY 4.0 · via GBIF. 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
HesperibalanusPBDB
Diet
suspension feederPBDB, for Balanidae
Life habit
epifaunal, gregariousPBDB, for Balanidae
Motility
stationary, attached, epibiontPBDB, for Balanidae
Vision
limitedPBDB, for Cirripedia

Time the record covers

At most 1.8 million years on record.

Every occurrence read is dated to somewhere between 3.6 Mya and 1.8 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Pliocene — about 4 of 8 occurrencesPliocenePleistocene — about 4 of 8 occurrencesPleistocene3.6–3.5 Mya — about 0.2 occurrences3.5–3.4 Mya — about 0.4 occurrences3.4–3.4 Mya — about 0.4 occurrences3.4–3.3 Mya — about 0.4 occurrences3.3–3.2 Mya — about 0.4 occurrences3.2–3.1 Mya — about 0.4 occurrences3.1–3.0 Mya — about 0.4 occurrences3.0–2.9 Mya — about 0.4 occurrences2.9–2.8 Mya — about 0.4 occurrences2.8–2.7 Mya — about 0.4 occurrences2.7–2.6 Mya — about 0.4 occurrences2.6–2.5 Mya — about 0.4 occurrences2.5–2.4 Mya — about 0.5 occurrences2.4–2.3 Mya — about 0.5 occurrences2.3–2.2 Mya — about 0.5 occurrences2.2–2.1 Mya — about 0.5 occurrences2.1–2.0 Mya — about 0.5 occurrences2.0–2.0 Mya — about 0.5 occurrences2.0–1.9 Mya — about 0.5 occurrences1.9–1.8 Mya — about 0.3 occurrences4.1 Mya1.3 Mya

8 occurrences of Balanus (Hesperibalanus) proinus on record, most of them in the Pliocene. 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

Careaga Sandstone — 34.88°N, 120.51°WCareaga Sandstone — 34.74°N, 120.41°WFoxen Mudstone — 34.88°N, 120.51°WSan Diego — 32.54°N, 117.11°W

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The named rock units Balanus (Hesperibalanus) proinus has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Balanus (Hesperibalanus) proinus and its relatives

Pliocene

Where Balanus (Hesperibalanus) proinus and its relatives were recorded in the Pliocene.

Found in the same rock

190 taxa

The Paleobiology Database records 6 sites for Balanus (Hesperibalanus) proinus, 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 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Balanus proteus Conrad, 1834

Source
GBIF
Credit
via GBIF
Licence
CC BY 4.0
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 itHesperibalanus through timeFormations of the PlioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Woodring and Bramlette 1950)