Pholadomya (Pholadomya)

Cédric Bamberg · CC0 · 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
- PholadomyaPBDB
- Diet
- suspension feederPBDB, for Pholadomyidae
- Life habit
- deep infaunalPBDB, for Pholadomyidae
- Motility
- facultatively mobilePBDB, for Pholadomyidae
- Vision
- blindPBDB, for Bivalvia
Time the record covers
At least 197 million years on record.
The record covers at least 201.4 Mya to 3.6 Mya. No occurrence read is dated outside 205.7 Mya to 2.58 Mya.
401 occurrences of Pholadomya (Pholadomya) on record, most of them in the Early Jurassic. 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
401 occurrences- Late Triassicunder 1%
- Early Jurassic73%
- Middle Jurassic9%
- Late Jurassic2%
- Early Cretaceousunder 1%
- Late Cretaceous4%
- Paleocene6%
- Eocene2%
- Mioceneunder 1%
- Plioceneunder 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
67 formations
- Almonacid de la Cuba Formation19
- Turmiel Fm Formation13
- Martinez Formation11
- Santa Susana Formation9
- Providence Formation7
- Rio Palomar Formation7
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The named rock units Pholadomya (Pholadomya) has been recovered from, largest first. Drawn where the rock is now, not where it formed. 43 further formations hold fewer occurrences each and are not listed. 211 occurrences have no formation on record, which is common for older literature.
Pholadomya (Pholadomya) and its relatives
Early JurassicWhere Pholadomya (Pholadomya) and its relatives were recorded in the Early Jurassic.
Found in the same rock
1,105 taxa- Pleuromya uniformis72 sites
- Plagiostoma67 sites
- Entolium (Entolium) corneolum57 sites
- Chlamys textoria54 sites
- Lobothyris punctata54 sites
- Modiolus46 sites
- Weyla alata45 sites
- Protocardia striatula40 sites
- Ctenostreon rugosum33 sites
- Gryphaea31 sites
- Cavilucina (Mesomiltha) bellona28 sites
- Montlivaltia28 sites
- Actinostreon25 sites
- Gryphaea (Bilobissa)25 sites
- Actinostreon gregarea24 sites
- Serpula24 sites
- Pinna (Pinna) radiata23 sites
- Lobothyris ovatissima22 sites
- Parvamussium pumilum22 sites
- Cardinia andium21 sites
- Plicatula21 sites
- Camptonectes (Camptonectes) auritus19 sites
- Weyla titan19 sites
- Gryphaea (Gryphaea) dumortieri18 sites
The Paleobiology Database records 329 sites for Pholadomya (Pholadomya), 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
65 references- Palokologie und zeitliche Verbreitung benthischer Faunengemeinschaften im Unterjura von Chile95
- Early Jurassic Bivalvia of northern Chile. Part II. Subclass Anomalodesmata50
- Palökologie benthischer Faunen aus dem Unter-Toarc SW-Europas35
- Bivalvos del Pliensbachiense en la Seccion de Almonacid de la Cuba (Cordillera Iberica, Espana)34
- The Lower Jurassic Rocks of East Greenland Part 118
- Temperature-related body size change of marine benthic macroinvertebrates across the Early Toarcian Anoxic Event15
- The Lower Jurassic Rocks of East Greenland Part II The Mesozoic Sediments of the Kap Hope Area Southern Liverpool Land15
- Upper Cretaceous (Maestrichtian) Mollusca from the Haustator bilira Assemblage Zone in the East Gulf Coastal Plain11
- Fauna of the Martinez Eocene of California10
- Callovian–Oxfordian bivalves from central Saudi Arabia: Systematic paleontology and paleobiogeography8
- Jurassic Pholadomyidae (Bivalvia) from New Zealand and New Caledonia7
- Stratigraphic and environmental control on marine benthic community change through the early Toarcian extinction event (Iberian Range, Spain)6
Each of the 401 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. 53 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 content2

Picture of Pholadomya (Pholadomya)
- Source
- GBIF
- Credit
- Cédric Bamberg
- Licence
- CC0
- Commercial use
- the licence allows it
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 itPholadomya through timeFormations of the Early JurassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Sowerby 1823