Balanus
Searched as Balanus hesperius proteus. The Paleobiology Database treats Balanus as the accepted name.
Balanus is a genus of barnacles in the family Balanidae of the subphylum Crustacea.
(c) Matt Muir, some rights reserved (CC BY) · CC BY 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- Also called
- barnaclePBDB
- Sits inside
- BalaninaePBDB
- 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 780 thousand years on record.
Every occurrence read is dated to somewhere between 2.58 Mya and 1.8 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
3 occurrences of Balanus on record, most of them in the Pleistocene. 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
3 occurrences- Pleistocene100%
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
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The named rock units Balanus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Balanus and its relatives
PleistoceneWhere Balanus and its relatives were recorded in the Pleistocene.
Found in the same rock
3,324 taxa- Ostrea39 sites
- Chlamys28 sites
- Turritella28 sites
- Conradostrea sculpturata26 sites
- Hiatella arctica26 sites
- Macoma nasuta22 sites
- Crepidula fornicata21 sites
- Glossaulax reclusiana19 sites
- Tellina19 sites
- Crepidula plana18 sites
- Epitonium18 sites
- Nucula (Nucula) proxima18 sites
- Nuculana acuta18 sites
- Mulinia lateralis17 sites
- Nassarius17 sites
- Conus16 sites
- Crepidula16 sites
- Glycymeris16 sites
- Anadara15 sites
- Bostrycapulus aculeatus15 sites
- Calliostoma15 sites
- Chama15 sites
- Echinoidea15 sites
- Marginella15 sites
The Paleobiology Database records 357 sites for Balanus, and this reads 240 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
1 referenceEach 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 doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content2
Picture of Balanus
- Source
- Wikipedia/Commons
- Credit
- (c) Matt Muir, some rights reserved (CC BY)
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
3D model
- Source
- Sketchfab
- Licence
- CC0 Public Domain
- Commercial use
- the licence allows it
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
- Source
- Wikipedia, “Balanus”
- 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 itBalaninae through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Da Costa 1778