Cuna

Blair Patullo (Museum Victoria) · CC BY 3.0 · 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
- CondylocardiidaePBDB
- Diet
- suspension feederPBDB, for Condylocardiidae
- Life habit
- epifaunalPBDB, for Condylocardiidae
- Motility
- facultatively mobilePBDB, for Condylocardiidae
- Vision
- blindPBDB, for Crassatelloidea
- Environment
- marinePBDB, for Crassatelloidea
Time the record covers
At least 69 million years on record.
The record covers at least 72.2 Mya to 2.58 Mya. No occurrence read is dated outside 83.6 Mya to 11.7 ka.
96 occurrences of Cuna on record, most of them in the Late Cretaceous. 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
96 occurrencesThese 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
20 formations
- Providence Formation47
- Coffee Sand Formation · Selma Group4
- Dry Creek Sands Formation4
- Prairie Bluff Formation3
- Peedee Formation2
- Severn Formation2
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The named rock units Cuna has been recovered from, largest first. Drawn where the rock is now, not where it formed. 17 occurrences have no formation on record, which is common for older literature.
Cuna and its relatives
Late CretaceousWhere Cuna and its relatives were recorded in the Late Cretaceous.
Found in the same rock
1,137 taxa- Anomia argentaria53 sites
- Cyclorisma53 sites
- Nuculana51 sites
- Syncyclonema50 sites
- Cymbophora48 sites
- Striarca47 sites
- Crenella serica44 sites
- Cyprimeria42 sites
- Euspira rectilabrum40 sites
- Nymphalucina linearia38 sites
- Cubitostrea tecticosta37 sites
- Linearis37 sites
- Turritella bilira36 sites
- Aenona eufaulensis35 sites
- Camptonectes bubonis35 sites
- Granocardium35 sites
- Turritella33 sites
- Cadulus32 sites
- Crassatella vadosa32 sites
- Glycymeris32 sites
- Vertebrata30 sites
- Hamulus onyx29 sites
- Trachycardium eufaulensis28 sites
- Caestocorbula27 sites
The Paleobiology Database records 85 sites for Cuna, and this reads all 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
17 references- Upper Cretaceous (Maestrichtian) larger invertebrates from the Haustator bilira Assemblage Zone in the Atlantic Coastal Plain with further data for the East Gulf45
- Upper Cretaceous (Maestrichtian) Mollusca from the Haustator bilira Assemblage Zone in the East Gulf Coastal Plain11
- Unpublished data on Cretaceous-Paleocene molluscan assemblages10
- Report on a collection of fossils from the Lakes Entrance shaft, Gippsland, Victoria6
- Resilience of marine invertebrate communities during the early Cenozoic hyperthermals5
- Changes in Late Cretaceous - early Tertiary benthic marine assemblages: analyses from the North American coastal plain shallow-shelf4
- The molluscan fauna of the Pliocene strata underlying the Adelaide Plains. Part II - Pelecypoda4
- The Lamellibranchs of the older Tertiary of Australia (Part 2)2
- Additions to the Molluscan Macrofauna of the Reklaw Formation1
- The Molluscan Macrofauna of the Reklaw Formation, Marquez Member (Eocene: Lower Claibornian), in Texas1
- Fabric of the Cretaceous-Tertiary Marine Macrofaunal Transition at Braggs, Alabama1
- Late Tertiary and Early Quaternary Fossil Mollusca for the Hondeklip Area, Cape Province, South Africa1
Each of the 96 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. 5 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 Cuna
- Source
- Wikidata/Commons
- Credit
- Blair Patullo (Museum Victoria)
- Licence
- CC BY 3.0
- Commercial use
- the licence allows it
No 3D scan of Cuna was found in MorphoSource and Sketchfab.
Smithsonian Open Access was 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 itCondylocardiidae through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Hedley 1902