Diplodonta balcombensis
Searched as Diplodonta subquadrata. The Paleobiology Database treats Diplodonta balcombensis as the accepted name.

via iDigBio · via iDigBio. 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
- DiplodontaPBDB
- Diet
- suspension feederPBDB, for Diplodonta
- Life habit
- infaunalPBDB, for Diplodonta
- Motility
- facultatively mobilePBDB, for Diplodonta
- Vision
- blindPBDB, for Bivalvia
Time the record covers
At least 15 million years on record.
The record covers at least 15.98 Mya to 129 ka. No occurrence read is dated outside 23.04 Mya to 0 Mya.
5 occurrences of Diplodonta balcombensis on record, most of them in the Miocene. 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
5 occurrences- Miocene40%
- Pliocene20%
- Pleistocene38%
- Holocene2%
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
2 formations
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The named rock units Diplodonta balcombensis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.
Diplodonta balcombensis and its relatives
MioceneWhere Diplodonta balcombensis and its relatives were recorded in the Miocene.
Found in the same rock
80 taxa- Acteocina infrequens1 site
- Alaba supralirata1 site
- Alvania1 site
- Amphithalamus1 site
- Anomia peruviana1 site
- Arcopsis solida1 site
- Argopecten ventricosus1 site
- Atilia1 site
- Atrina1 site
- Balcis1 site
- Barbatia (Cucullaearca) reeveana1 site
- Bulla punctulata1 site
- Cancellaria (Cancellaria) ovata1 site
- Cantharus1 site
- Cerithiopsis1 site
- Cerithium1 site
- Cheila equestris1 site
- Chemnitzia1 site
- Chione undatella1 site
- Chrysallida1 site
- Conus fergusoni1 site
- Conus lucidus1 site
- Ctena galapagana1 site
- Cumingia lamellosa1 site
The Paleobiology Database records 1 site for Diplodonta balcombensis, 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
4 references- The Lamellibranchs of the older Tertiary of Australia (Part 2)2
- Quaternary invertebrate fossil assemblages from coastal marine ecosystems of Bahia de Panama, Panama1
- Pliocene fossils from Baltra (South Seymour) Island, Galápagos Islands1
- Notes on the marine Pleistocene deposits of San Diego County, California1
Each of the 5 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. Each entry links to the Paleobiology Database's own record for the work.
Media and terms
Media content1

Picture of Diplodonta balcombensis
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Diplodonta balcombensis 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itDiplodonta through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Tate 1887