Trachycardium
Searched as Trachycardium (Dallocardia) dominicense dominicense. The Paleobiology Database treats Trachycardium as the accepted name.
Trachycardium is a genus of molluscs in the family Cardiidae.

Uncredited · 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
- TrachycardiinaePBDB
- Diet
- suspension feederPBDB
- Life habit
- infaunalPBDB
- Motility
- facultatively mobilePBDB
- Vision
- blindPBDB, for Bivalvia
Time the record covers
At least 8.8 million years on record.
The record covers at least 20.45 Mya to 11.63 Mya. No occurrence read is dated outside 23.04 Mya to 7.246 Mya.
30 occurrences of Trachycardium on record, most of them in the Miocene. 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
30 occurrences- Miocene100%
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
2 formations
Loading coastlines…
The named rock units Trachycardium has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Trachycardium and its relatives
MioceneWhere Trachycardium and its relatives were recorded in the Miocene.
Found in the same rock
752 taxa- Cymbophora115 sites
- Anomia argentaria107 sites
- Striarca104 sites
- Syncyclonema93 sites
- Nuculana92 sites
- Cyprimeria90 sites
- Corbula85 sites
- Turritella84 sites
- Cubitostrea tecticosta81 sites
- Turritella trilira79 sites
- Crassatella vadosa78 sites
- Crenella serica76 sites
- Serpula74 sites
- Camptonectes bubonis73 sites
- Ostrea71 sites
- Granocardium70 sites
- Vertebrata70 sites
- Anomia ornata69 sites
- Bryozoa67 sites
- Turritella bilira67 sites
- Euspira rectilabrum64 sites
- Gabbigonia eufaulensis64 sites
- Veniella conradi64 sites
- Hamulus onyx62 sites
The Paleobiology Database records 489 sites for Trachycardium, 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 30 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 Trachycardium
- Source
- Wikipedia/Commons
- Credit
- nobody named on the record
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
CT scan
- Source
- MorphoSource
- Licence
- In Copyright
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Trachycardium egmontianum · FMNH:Invertebrate Zoology:176760
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
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 itTrachycardiinae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Mörch 1853)