Cardium

Wikipek · 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
- 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 233 million years on record.
The record covers at least 233.6 Mya to 11.7 ka. No occurrence read is dated outside 237 Mya to 0 Mya.
864 occurrences of Cardium 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
864 occurrences- Late Triassic3%
- Early Jurassic3%
- Middle Jurassicunder 1%
- Late Jurassicunder 1%
- Early Cretaceous11%
- Late Cretaceous22%
- Paleocene4%
- Eocene11%
- Oligocene6%
- Miocene22%
- Pliocene7%
- Pleistocene10%
- 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
215 formations
- Prairie Bluff Formation44
- Gatun Formation21
- Providence Formation18
- Marshalltown Formation · Matawan Group16
- Black Creek Formation15
- Pirabas Formation15
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The named rock units Cardium has been recovered from, largest first. Drawn where the rock is now, not where it formed. 191 further formations hold fewer occurrences each and are not listed. 294 occurrences have no formation on record, which is common for older literature.
Cardium and its relatives
Late CretaceousWhere Cardium and its relatives were recorded in the Late Cretaceous.
Found in the same rock
3,012 taxa- Turritella81 sites
- Serpula62 sites
- Exogyra (Exogyra) costata56 sites
- Arca55 sites
- Ostrea54 sites
- Veniella conradi50 sites
- Bryozoa49 sites
- Anomia argentaria48 sites
- Liopistha protexta47 sites
- Crassatella vadosa45 sites
- Glycymeris45 sites
- Cliona44 sites
- Nuculana44 sites
- Turritella vertebroides44 sites
- Corbula42 sites
- Panopea42 sites
- Turritella trilira41 sites
- Idonearca capax40 sites
- Cyprimeria39 sites
- Tellina37 sites
- Bellifusus35 sites
- Cubitostrea tecticosta35 sites
- Drilluta35 sites
- Astarte33 sites
The Paleobiology Database records 585 sites for Cardium, and this reads 240 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
274 references- Upper Cretaceous (Maestrichtian) Mollusca from the Haustator bilira Assemblage Zone in the East Gulf Coastal Plain61
- Jura Vaudois et Neuchatelois54
- Stratigraphy of the outcropping post-Magothy Upper Cretaceous formations in Southern New Jersey an Northern Delmarva peninsula, Delaware and Maryland23
- Marine Molluscan Assemblages in the Early Pleistocene of Sidestrand, Bramerton and the Royal Society Borehole at Ludham, Norfolk22
- The Cretaceous formations20
- Morza plejstocenskie w Polsce; osady, wiek i paleogeografia [Pleistocene seas in Poland; sediments, age and paleogeography]16
- The Geology of the Lower Haraz Valley area, Central Alborz, Iran16
- Geology and paleontology of canal zone and adjoing parts of Panama: Description of Tertiary mollusks (Pelecypods: Propeamussiidae to Cuspidariidae).15
- Tertiary faunal horizons of western Washington15
- Fauna de moluste a depozitelor Paleogene din nord-vestul Transilvaniei [Molluscan fauna from Paleogene deposits from NW Transilvania]14
- Localidades fossiliferas da Formacao Pirabas (Mioceno Inferior)13
- Catalogue of the Paleocene and Eocene mollusca of the southern and eastern United States. Part 1. Pelecypoda, Amphineura, Pteropoda, Scaphopoda and Cephalopoda12
Each of the 864 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. 262 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 content4

Picture of Cardium
- Source
- Wikidata/Commons
- Credit
- Wikipek
- Licence
- CC BY 3.0
- Commercial use
- the licence allows it
3D scan
- Source
- Smithsonian
- Licence
- CC0 — this site’s default, not the record’s
- Commercial use
- the licence allows it
- Specimen
- Cardium costatum
CT scan
- Source
- MorphoSource
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Cardium maxicostatum · usnm:invertebrate zoology:767846
3D model
- Source
- Sketchfab
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
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 Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Linnaeus 1758