Trachycardium (Trachycardium) isocardia
Searched as Trachycardium isocardia. The Paleobiology Database treats Trachycardium (Trachycardium) isocardia as the accepted name.
Trachycardium isocardia, the West Indian prickly cockle, is a species of bivalve mollusc in the family Cardiidae. It can be found along coast of the West Indies.

Wilfredor · CC0 · 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
- Trachycardium (Trachycardium)PBDB
- Diet
- suspension feederPBDB, for Trachycardium
- Life habit
- infaunalPBDB, for Trachycardium
- Motility
- facultatively mobilePBDB, for Trachycardium
- Vision
- blindPBDB, for Bivalvia
Time the record covers
At least 20 million years on record.
The record covers at least 20.45 Mya to 11.7 ka. No occurrence read is dated outside 23.04 Mya to 0 Mya.
34 occurrences of Trachycardium (Trachycardium) isocardia on record, most of them in the Pleistocene. 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
34 occurrences- Miocene15%
- Pliocene35%
- Pleistocene41%
- Holocene9%
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
14 formations
- Mare Formation · Cabo Blanco Group5
- Caloosahatchee Formation4
- Ware Formation4
- Culebra Formation3
- Waccamaw Formation3
- Fort Thompson Formation1
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The named rock units Trachycardium (Trachycardium) isocardia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 occurrences have no formation on record, which is common for older literature.
Trachycardium (Trachycardium) isocardia and its relatives
PleistoceneWhere Trachycardium (Trachycardium) isocardia and its relatives were recorded in the Pleistocene.
Found in the same rock
418 taxa- Macrocallista maculata5 sites
- Amusium toulae3 sites
- Architectonica nobilis3 sites
- Dosinia (Dosinia) delicatissima3 sites
- Laevicardium serratum3 sites
- Turritella3 sites
- Anadara (Rasia) dariensis2 sites
- Anomia simplex2 sites
- Argopecten gibbus2 sites
- Atilia2 sites
- Cerithium2 sites
- Cerithium muscarum2 sites
- Chione2 sites
- Chione cancellata2 sites
- Conradostrea sculpturata2 sites
- Crassinella2 sites
- Crepidula plana2 sites
- Cupularia denticulata2 sites
- Diodora cayenensis2 sites
- Divalinga quadrisulcata2 sites
- Donax2 sites
- Epitonium2 sites
- Ficus2 sites
- Glycymeris carbasina2 sites
The Paleobiology Database records 10 sites for Trachycardium (Trachycardium) isocardia, and this reads all 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
15 references- Unpublished notes on Caribbean collection of Jack and Winifred Gibson-Smith, Naturhistorisches Museum Basel6
- Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions6
- Geology and paleontology of canal zone and adjoing parts of Panama: Description of Tertiary mollusks (Pelecypods: Propeamussiidae to Cuspidariidae).5
- Neogene molluscs, shallow marine paleoenvironments, and chronostratigraphy of the Guajira Peninsula, Colombia4
- Late Cenozoic pelecypods from northern Venezuela2
- Post-Pleiocene Fossils of South Carolina2
- Contributions to the Pleistocene coral reefs of the Red Sea coast, Egypt1
- Stratigraphy of newly exposed Quaternary sediments, eastern Orleans Parish, Louisiana1
- Stratigraphy of newly exposed Quaternary seduments, eastern Orleans Parish, Louisiana1
- Neogene Biostratigraphy of the Charlotte Harbor Area in Southwestern Florida1
- Geology of the Western Everglades Area, Southern Florida1
- Pliocene Mollusca of Southern Florida1
Each of the 34 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. 3 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 Trachycardium (Trachycardium) isocardia
- Source
- Wikipedia/Commons
- Credit
- Wilfredor
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Trachycardium (Trachycardium) isocardia 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
- 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 itTrachycardium (Trachycardium) through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Linnaeus 1758)