Aequipecten
Aequipecten is a genus of scallops, marine bivalve mollusks in the family Pectinidae.

Hans Hillewaert · CC BY-SA 4.0 · 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- Also called
- scallopPBDB
- Sits inside
- ChlamydinaePBDB
- Diet
- suspension feederPBDB
- Life habit
- epifaunalPBDB
- Motility
- facultatively mobilePBDB
- Vision
- limitedPBDB, for Pectinidae
- Environment
- marinePBDB, for Pectinida
Time the record covers
At least 241 million years on record.
The record covers at least 241.464 Mya to 11.7 ka. No occurrence read is dated outside 247 Mya to 0 Mya.
452 occurrences of Aequipecten 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
452 occurrences- Middle Triassic1%
- Late Triassic2%
- Early Jurassic6%
- Middle Jurassic1%
- Late Jurassic5%
- Early Cretaceousunder 1%
- Late Cretaceous6%
- Eocene6%
- Oligocene9%
- Miocene37%
- Pliocene13%
- Pleistocene12%
- 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
103 formations
- Puerto Madryn Formation32
- Lillo Formation14
- Chickasawhay Formation12
- opoka Formation10
- Berada Formation9
- Caloosahatchee Formation8
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The named rock units Aequipecten has been recovered from, largest first. Drawn where the rock is now, not where it formed. 79 further formations hold fewer occurrences each and are not listed. 179 occurrences have no formation on record, which is common for older literature.
Aequipecten and its relatives
MioceneWhere Aequipecten and its relatives were recorded in the Miocene.
Found in the same rock
3,257 taxa- Chlamys41 sites
- Lucinoma borealis41 sites
- Scapharca (Scapharca) diluvii39 sites
- Venus (Ventricoloidea) multilamella37 sites
- Varicorbula gibba35 sites
- Hiatella arctica34 sites
- Limopsis33 sites
- Nucula (Nucula) nucleus31 sites
- Turritella30 sites
- Cardium29 sites
- Gouldia (Gouldia) minima29 sites
- Yoldia (Yoldia) glaberrima28 sites
- Astarte27 sites
- Heteranomia squamula27 sites
- Ostrea27 sites
- Parvicardium26 sites
- Plicatula26 sites
- Yoldiella26 sites
- Spaniodontella25 sites
- Limopsis (Limopsis) aurita24 sites
- Saccella westendorpi24 sites
- Astarte (Astarte) radiata23 sites
- Lentigodentalium23 sites
- Reussirella23 sites
The Paleobiology Database records 285 sites for Aequipecten, 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
141 references- Die Fauna des marinen Miozäns von Kevelaer (Niederrhein). Band 2 Bivalvia, Scaphopoda, Cephalopoda, Bryozoa, Annelida, Brachiopoda28
- Middle Miocene bivalves of the Puerto Madryn Formation, Valdes Peninsule, Chubut Province, Argentina (Nuculidae-Pectinidae): Part 128
- The Lower Jurassic Rocks of East Greenland Part 117
- The Neogene Amphineura and Bivalvia (Protobranchia and Pteriomorphia) from Kallo and Doel (Oost Vlaanderen, Belgium)15
- Karagyuleva, 196415
- Maastrichtian non-cephalopod mollusks: Scaphopoda, Gastropoda and Bivalvia of the Middle Vistula Valley, central Poland13
- Mollusks of the Chickasawhay Marl12
- Wood, 185012
- Biozonation of the Neogene invertebrate megafauna of the Hellenic area11
- Les formations recifales coralliennes du Miocene superieur d'Algerie et du Maroc [Upper Miocene coral reef formations from Algeria and Morocco]10
- Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions9
- Stratigraphic interpretation of the Neogene marine-continental record in the Maaseik well (49W0220) in the Roer Valley Graben, NE Belgium9
Each of the 452 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. 129 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 Aequipecten
- Source
- Wikipedia/Commons
- Credit
- Hans Hillewaert
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
CT scan
- Source
- MorphoSource
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Aequipecten exasperatus · USNM:IZ:USNM 846221
3D model
- Source
- Sketchfab
- Credit
- latedcapuerj
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Source
- Wikipedia, “Aequipecten”
- 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 itChlamydinae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Fischer 1886)