Tucetona
Tucetona is a genus of saltwater clams, marine bivalve molluscs in the family Glycymerididae, the bittersweet clams. Unlike other genera in the family, Tucetona species have a ribbed shell.

Hectonichus · CC BY-SA 3.0 · 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- Sits inside
- GlycymerididaePBDB
- Diet
- suspension feederPBDB
- Life habit
- semi-infaunalPBDB
- Motility
- facultatively mobilePBDB
- Vision
- blindPBDB, for Bivalvia
- Environment
- coastal,inner shelf,outer shelf,oceanicPBDB, for Glycymerididae
Time the record covers
At least 85 million years on record.
The record covers at least 85.7 Mya to 129 ka. No occurrence read is dated outside 89.8 Mya to 11.7 ka.
322 occurrences of Tucetona 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
322 occurrences- Late Cretaceousunder 1%
- Eocene11%
- Oligocene2%
- Miocene47%
- Pliocene22%
- Pleistocene16%
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
91 formations
- Castilletes Formation27
- Gatun Formation20
- Jimol Formation16
- Gurabo Formation12
- Caloosahatchee Formation9
- Cayo Agua Formation · Bocas del Toro Group9
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The named rock units Tucetona has been recovered from, largest first. Drawn where the rock is now, not where it formed. 67 further formations hold fewer occurrences each and are not listed. 48 occurrences have no formation on record, which is common for older literature.
Tucetona and its relatives
MioceneWhere Tucetona and its relatives were recorded in the Miocene.
Found in the same rock
2,821 taxa- Turritella27 sites
- Chama19 sites
- Chione cancellata19 sites
- Glycymeris17 sites
- Ostrea17 sites
- Polinices17 sites
- Plicatula gibbosa16 sites
- Tellina16 sites
- Cerithium15 sites
- Anomia simplex14 sites
- Cadulus14 sites
- Crassinella lunulata14 sites
- Dentalium14 sites
- Epitonium14 sites
- Nucula (Nucula) proxima14 sites
- Turbonilla14 sites
- Architectonica nobilis13 sites
- Crassinella13 sites
- Crepidula plana13 sites
- Diodora13 sites
- Marginella13 sites
- Conus12 sites
- Macoma12 sites
- Odostomia12 sites
The Paleobiology Database records 148 sites for Tucetona, 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
79 references- Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions52
- Neogene molluscs, shallow marine paleoenvironments, and chronostratigraphy of the Guajira Peninsula, Colombia44
- A paleobiotic survey of Caribbean faunas from the Neogene of the Isthmus of Panama24
- Geology and paleontology of canal zone and adjoing parts of Panama: Description of Tertiary mollusks (additions to gastropods, scaphopods, pelecypods: Nuculidae to Malleidae)17
- Unpublished notes on Caribbean collection of the Naturhistorisches Museum Basel15
- Some Venezualan and Caribbean Mollusks10
- Unpublished notes on Caribbean collection of Jack and Winifred Gibson-Smith, Naturhistorisches Museum Basel9
- The molluscan fauna of the Pliocene strata underlying the Adelaide Plains. Part II - Pelecypoda8
- Resilience of marine invertebrate communities during the early Cenozoic hyperthermals7
- Eocene bivalves and gastropods from the Pallinup Siltstone, Western Australia, with new records from the Eocene and Oligocene of southeastern Australia7
- Stratigraphy and Mollusca of the Eocene of western Oregon6
- Santo Domingo type sections and fossils6
Each of the 322 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. 67 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 Tucetona
- Source
- Wikipedia/Commons
- Credit
- Hectonichus
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Tucetona 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.
The description on this site
- Source
- Wikipedia, “Tucetona”
- 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 itGlycymerididae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Iredale 1939)