Mimachlamys asperrima
Mimachlamys asperrima, common name the austral scallop, doughboy, doughboy scallop, fan shell, or prickly scallop, is a species of scallop, a marine bivalve mollusc in the family Pectinidae, the scallops.

Uncredited · 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- Sits inside
- Chlamys (Mimachlamys)PBDB
- Diet
- suspension feederPBDB, for Chlamys
- Life habit
- epifaunalPBDB, for Chlamys
- Motility
- stationary, attachedPBDB, for Chlamys
- Vision
- limitedPBDB, for Pectinidae
- Environment
- marinePBDB, for Pectinida
Time the record covers
At least 5.2 million years on record.
The record covers at least 5.333 Mya to 129 ka. No occurrence read is dated outside 11.63 Mya to 11.7 ka.
3 occurrences of Mimachlamys asperrima on record, most of them in the Pleistocene. 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
3 occurrences- Miocene33%
- Pleistocene67%
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
Loading coastlines…
The named rock units Mimachlamys asperrima has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.
Mimachlamys asperrima and its relatives
PleistoceneWhere Mimachlamys asperrima and its relatives were recorded in the Pleistocene.
Found in the same rock
115 taxa- Acrosterigma2 sites
- Chama2 sites
- Circe lenticularis2 sites
- Dosinia2 sites
- Fragum unedo2 sites
- Megacardita2 sites
- Modiolus philippinarum2 sites
- Placamen2 sites
- Rhinoclavis fasciata2 sites
- Turbo haynesi2 sites
- ? Platygira sp.1 site
- Acropora1 site
- Acteocina1 site
- Alaba1 site
- Amoria1 site
- Anachis (Zafra)1 site
- Anadara crebricostata1 site
- Angaria1 site
- Annachlamys flabellatus1 site
- Antigona1 site
- Arca navicularis1 site
- Arca trapezia1 site
- Atys1 site
- Bittium1 site
The Paleobiology Database records 2 sites for Mimachlamys asperrima, 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
3 references- Revision of southern Australian Cenozoic fossil Pectinidae (Mollusca: Bivalvia)1
- Cenozoic Molluscs and Echinoids of Barrow Island, Western Australia1
- A Pleistocene molluscan fauna with Anadara trapezia (Deshayes) (Bivalvia: Arcoida) from the Dampier Limestone of Shark Bay, Western Australia1
Each of the 3 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 Mimachlamys asperrima
- Source
- Wikipedia/Commons
- Credit
- nobody named on the record
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Mimachlamys asperrima 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.
The description on this site
- 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 itChlamys (Mimachlamys) through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Lamarck 1819)