Arcoidea
M.Violante · CC BY 2.5 · via Wikidata/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
- ArcidaPBDB
- Diet
- suspension feederPBDB
- Life habit
- semi-infaunalPBDB
- Motility
- facultatively mobilePBDB
- Vision
- blindPBDB, for Bivalvia
Time the record covers
At least 467 million years on record.
The record covers at least 468 Mya to 11.7 ka. No occurrence read is dated outside 477.1 Mya to 0 Mya.
12,000+ occurrences of Arcoidea on record. 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
12,000 occurrences read- Ordovicianunder 1%
- Silurianunder 1%
- Devonianunder 1%
- Carboniferousunder 1%
- Permian2%
- Early Triassicunder 1%
- Middle Triassicunder 1%
- Late Triassic1%
- Early Jurassic4%
- Middle Jurassic4%
- Late Jurassic4%
- Early Cretaceous4%
- Late Cretaceous18%
- Paleocene5%
- Eocene11%
- Oligocene4%
- Miocene21%
- Pliocene10%
- Pleistocene10%
- Holoceneunder 1%
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. The read hit its cap, so every figure above is a floor and the shares are of the occurrences read. More on what this infers.
Found in
at least 1177 formations
- Gatun Formation235
- Providence Formation217
- Chari Formation147
- Prairie Bluff Formation · Selma Group146
- Cook Mountain Formation · Claiborne Group143
- Castilletes Formation136
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The named rock units Arcoidea has been recovered from, largest first. Drawn where the rock is now, not where it formed. The read hit its cap, so each count is a floor. 1,153 further formations hold fewer occurrences each and are not listed. 2,500 occurrences have no formation on record, which is common for older literature.
Found in the same rock
1,304 taxa- Camptonectes60 sites
- Entolium orbiculare57 sites
- Grammatodon53 sites
- Ammonoidea51 sites
- Astarte51 sites
- Isognomon51 sites
- Buchia mosquensis48 sites
- Nuculana46 sites
- Modiolus43 sites
- Taimyrothyris43 sites
- Pycnodonte vesicularis42 sites
- Belemnitida41 sites
- Pinna41 sites
- Nucula36 sites
- Grammatodon (Cosmetodon) keyserlingii35 sites
- Hartwellia35 sites
- Pleuromya35 sites
- Granocardium33 sites
- Plagiostoma33 sites
- Inoceramus32 sites
- Isocyprina32 sites
- Panopea31 sites
- Aphrodina30 sites
- Protocardia striatula30 sites
The Paleobiology Database records at least 1,020 sites for Arcoidea, and this reads 240 of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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
at least 1,243 references- Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions375
- Unpublished data on Cretaceous-Paleocene molluscan assemblages361
- Upper Cretaceous (Maestrichtian) Mollusca from the Haustator bilira Assemblage Zone in the East Gulf Coastal Plain287
- Upper Cretaceous (Maestrichtian) larger invertebrates from the Haustator bilira Assemblage Zone in the Atlantic Coastal Plain with further data for the East Gulf217
- Neogene molluscs, shallow marine paleoenvironments, and chronostratigraphy of the Guajira Peninsula, Colombia212
- Resilience of marine invertebrate communities during the early Cenozoic hyperthermals204
- Geology and paleontology of canal zone and adjoing parts of Panama: Description of Tertiary mollusks (additions to gastropods, scaphopods, pelecypods: Nuculidae to Malleidae)202
- Upper Cretaceous (Maestrichtian) larger invertebrate Fossils from the Haustator bilira Assemblage Zone in the west gulf Coastal Plain190
- The Molluscan Fauna of the Alum Bluff Group of Florida178
- Catalogue of the Paleocene and Eocene mollusca of the southern and eastern United States. Part 1. Pelecypoda, Amphineura, Pteropoda, Scaphopoda and Cephalopoda171
- Unpublished data from Kachchh164
- Unpublished data153
Each of the 12,000 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. That read hit its cap, so each count is a floor. 1,231 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 Arcoidea
- Source
- Wikidata/Commons
- Credit
- M.Violante
- Licence
- CC BY 2.5
- Commercial use
- the licence allows it
No 3D scan of Arcoidea 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itArcida through timeThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Lamarck 1809