Acanthocardia
Acanthocardia is a genus of saltwater clams, marine bivalve molluscs in the family Cardiidae. They are infaunal suspension feeders.

Georges Jansoone ( JoJan ) · CC BY 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
- CardiinaePBDB
- Diet
- suspension feederPBDB, for Cardiidae
- Life habit
- infaunalPBDB, for Cardiidae
- Motility
- facultatively mobilePBDB, for Cardiidae
- Vision
- blindPBDB, for Bivalvia
Time the record covers
At least 83 million years on record.
The record covers at least 83.6 Mya to 11.7 ka. No occurrence read is dated outside 89.8 Mya to 0 Mya.
171 occurrences of Acanthocardia 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
171 occurrences- Late Cretaceous1%
- Paleocene16%
- Eocene19%
- Oligocene10%
- Miocene36%
- Pliocene12%
- Pleistocene5%
- 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. More on what this infers.
Found in
58 formations
- Pendleton Ferry Formation · Wilcox Group12
- Berada Formation10
- Marthaville Formation · Wilcox Group9
- Gurabo Formation8
- Nanafalia Formation · Midway Group8
- Chipola Formation · Alum Bluff Group6
Loading coastlines…
The named rock units Acanthocardia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 34 further formations hold fewer occurrences each and are not listed. 36 occurrences have no formation on record, which is common for older literature.
Acanthocardia and its relatives
MioceneWhere Acanthocardia and its relatives were recorded in the Miocene.
Found in the same rock
2,398 taxa- Pitar20 sites
- Chlamys17 sites
- Ostrea17 sites
- Turritella17 sites
- Tellina16 sites
- Scapharca (Scapharca) diluvii15 sites
- Aequipecten opercularis13 sites
- Agnocardia glebosum13 sites
- Corbula13 sites
- Dentalium13 sites
- Lucinoma borealis13 sites
- Conus12 sites
- Corbula engonata12 sites
- Ervilia12 sites
- Natica12 sites
- Scaphander12 sites
- Anadara11 sites
- Caricella11 sites
- Glycymeris11 sites
- Callista (Callista) chione10 sites
- Gari10 sites
- Glycymeris obovata baldii10 sites
- Nucula vicksburgensis10 sites
- Nuculana10 sites
The Paleobiology Database records 107 sites for Acanthocardia, 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
73 references- Lower Eocene Faunal Units of Lousiana19
- Lower Oligocene Bivalvia of the Vicksburg Group in Mississippi12
- Stratigraphic interpretation of the Neogene marine-continental record in the Maaseik well (49W0220) in the Roer Valley Graben, NE Belgium10
- Neogene Paleontology in the Northern Dominican Republic 9. The Family Cardiidae (Mollusca: Bivalvia)9
- Taxonomy, paleoecology, and paleobiogeographical significance of the middle-late Eocene molluscs from the Garet Gehannem section in the Fayoum depression, Egypt6
- Bivalve Molluscs from the Badenian of Northwestern Bulgaria5
- Notes on the genus Agnocardia (Mollusca: Cardiidae) with the description of a new species from the Pliocene of Florida5
- Catalogue of the Paleocene and Eocene mollusca of the southern and eastern United States. Part 1. Pelecypoda, Amphineura, Pteropoda, Scaphopoda and Cephalopoda5
- The Molluscan Fauna of the Alum Bluff Group of Florida5
- Les formations recifales coralliennes du Miocene superieur d'Algerie et du Maroc [Upper Miocene coral reef formations from Algeria and Morocco]4
- Resilience of marine invertebrate communities during the early Cenozoic hyperthermals3
- Impact of lithification on the diversity, size distribution, and recovery dynamics of marine invertebrate assemblages3
Each of the 171 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. 61 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 content3
Picture of Acanthocardia
- Source
- Wikipedia/Commons
- Credit
- Georges Jansoone ( JoJan )
- Licence
- CC BY 3.0
- Commercial use
- the licence allows it
CT scan
- Source
- MorphoSource
- Licence
- In Copyright
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Acanthocardia aculeata · fmnh:invertebrate zoology:8411
3D model
- Source
- Sketchfab
- Credit
- Elio Lippolis
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
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 itCardiinae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Gray 1851)