Pygocardia

Stichting Observation International · CC BY-NC 4.0 · via GBIF. 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
- ArcticidaePBDB
- Diet
- suspension feederPBDB, for Venerida
- Life habit
- infaunalPBDB, for Venerida
- Motility
- facultatively mobilePBDB, for Venerida
- Vision
- blindPBDB, for Bivalvia
Time the record covers
At least 20 million years on record.
The record covers at least 23.04 Mya to 2.58 Mya. No occurrence read is dated outside 27.3 Mya to 11.7 ka.
21 occurrences of Pygocardia on record, most of them in the Pliocene. 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
21 occurrences- Oligocene5%
- Pliocene71%
- Pleistocene24%
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
6 formations
- Lillo Formation7
- Coralline Crag Formation3
- Red Crag Formation2
- Brejning Clay Formation1
- Tielrode Formation1
- Oosterhout Formation1
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The named rock units Pygocardia 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.
Pygocardia and its relatives
PlioceneWhere Pygocardia and its relatives were recorded in the Pliocene.
Found in the same rock
432 taxa- Aequipecten opercularis6 sites
- Arctica islandica6 sites
- Buccinum undatum6 sites
- Cardita senilis6 sites
- Glycymeris6 sites
- Astarte mutabilis5 sites
- Isocrassina basteroti5 sites
- Laevicardium (Laevicardium) decorticatum5 sites
- Panopea5 sites
- Amyclina labiosa4 sites
- Aporrhais pespelecani4 sites
- Astarte4 sites
- Astarte (Digitariopsis) obliquata burtinea4 sites
- Astarte gracilis4 sites
- Cyrtodaria angusta4 sites
- Diplodonta (Diplodonta) rotundata4 sites
- Dosina cassina4 sites
- Hiatella arctica4 sites
- Liomesus dalei4 sites
- Lucinoma borealis4 sites
- Macoma (Macoma) praetenuis4 sites
- Nassarius4 sites
- Nucula (Nucula) nucleus4 sites
- Ostrea edulis4 sites
The Paleobiology Database records 12 sites for Pygocardia, 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
8 references- The Neogene Bivalvia (Heterodonta and Anomalodesmata) and Scaphopoda from Kallo and Doel (Oost Vlaanderen, Belgium)7
- Wood, 18505
- Unpublished census data for the Mollusca of the Tjornes sequence, Iceland3
- Isotope palaeotemperatures from the Tjornes Beds in Iceland; evidence of Pliocene cooling2
- A new axiid (Crustacea: Decapoda: Axiidea) from the Neogene of Belgium and the Netherlands1
- Neogene stratigraphy of the Langenboom locality (Noord-Brabant, Netherlands)1
- A late Oligocene (Chattian B) mollusc fauna from the clay-pit of Galten Brickworks at Norre Vissing, Jylland, Denmark1
- Palaeoecology of some Mollusca from the Tielrode Sands (Pliocene, Belgium)1
Each of the 21 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. 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 Pygocardia
- Source
- GBIF
- Credit
- Stichting Observation International
- Licence
- CC BY-NC 4.0
- Commercial use
- the licence does not allow it
No 3D scan of Pygocardia was found in MorphoSource and Sketchfab.
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itArcticidae through timeFormations of the PlioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Fischer 1887