Balanomorpha
The Balanomorpha are an order of barnacles, containing familiar sessile shelled acorn barnacles of the seashore. The order contains these families:

Stemonitis · Copyrighted free use · 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
- ThoracicalcareaPBDB
- Diet
- suspension feederPBDB, for Cirripedia
- Life habit
- epifaunalPBDB, for Cirripedia
- Motility
- stationary, attached, epibiontPBDB, for Cirripedia
- Vision
- limitedPBDB, for Cirripedia
Time the record covers
At least 184 million years on record.
The record covers at least 184.2 Mya to 11.7 ka. No occurrence read is dated outside 192.9 Mya to 0 Mya.
1,065 occurrences of Balanomorpha on record, most of them in the Miocene. The Paleobiology Database records this as a living group. 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
1,065 occurrences- Early Jurassicunder 1%
- Early Cretaceousunder 1%
- Late Cretaceous7%
- Paleoceneunder 1%
- Eocene4%
- Oligocene5%
- Miocene34%
- Pliocene15%
- Pleistocene32%
- Holocene2%
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
179 formations
- Vaqueros Formation70
- Choptank Formation · Chesapeake Group36
- Yorktown Formation · Chesapeake Group25
- St Marys Formation · Chesapeake Group24
- Careaga Sandstone Formation21
- Tamiami Formation19
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The named rock units Balanomorpha has been recovered from, largest first. Drawn where the rock is now, not where it formed. 155 further formations hold fewer occurrences each and are not listed. 372 occurrences have no formation on record, which is common for older literature.
Balanomorpha and its relatives
MioceneWhere Balanomorpha and its relatives were recorded in the Miocene.
Found in the same rock
2,742 taxa- Balanus121 sites
- Ostrea42 sites
- Chlamys38 sites
- Concavus concavus30 sites
- Turritella30 sites
- Dosinia acetabulum26 sites
- Hiatella arctica26 sites
- Conradostrea sculpturata22 sites
- Euspira heros22 sites
- Anadara21 sites
- Bicorbula idonea21 sites
- Parvilucina crenulata21 sites
- Chesacardium laqueatum20 sites
- Chesapecten (Chesapecten) nefrens20 sites
- Crepidula plana20 sites
- Calliostoma19 sites
- Crepidula fornicata19 sites
- Mercenaria19 sites
- Bryozoa18 sites
- Astarte thisphila17 sites
- Busycon17 sites
- Conus17 sites
- Corbula inaequalis17 sites
- Tellina17 sites
The Paleobiology Database records 711 sites for Balanomorpha, 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
258 references- The Vaqueros Formation, Lower Miocene of California. I. Paleontology64
- Usonogie raki (Cirripedia, Thoracica) verkhnego Mela Mangyshlaka54
- Systematics and biostratigraphy of Miocene Cirripedia of the Chesapeake Group; Maryland, North Carolina, and Virginia46
- Revision of the balanid barnacle genus Concavus Newman, 1982, with the description of a new subfamily, two new genera, and eight new species42
- Eocene Balanidae of Florida, Including a New Genus and Species with a Unique Plan of "Turtle-Barnacle" Organization29
- Quaternary marine stratigraphy and geochronology in central West Greenland19
- Geology and paleontology of the Santa Maria District California19
- Balanoid barnacles from the Miocene of the Alaska Peninsula, and their relevance to the extant boreal barnacle fauna18
- Pancho Rico Formation, Salinas Valley18
- Stratigraphy, invertebrate taphonomy and depositional history of the Miocene Calvert and Choptank Formations, Atlantic Coastal Plain17
- Contributions to the Quaternary geology of northern West Greenland especially the raised marine deposits17
- Les formations recifales coralliennes du Miocene superieur d'Algerie et du Maroc [Upper Miocene coral reef formations from Algeria and Morocco]16
Each of the 1,065 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. 246 further references are not listed. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1
Picture of Balanomorpha
- Source
- Wikipedia/Commons
- Credit
- Stemonitis
- Licence
- Copyrighted free use
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
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 itThoracicalcarea through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Pilsbry 1916)