Mytilopsis
Mytilopsis is a genus of small fresh- and brackishwater mussels in the family Dreissenidae.

Smithsonian Environmental Research Center · CC BY 2.0 · 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- Sits inside
- DreissenidaePBDB
- Diet
- suspension feederPBDB
- Life habit
- epifaunalPBDB
- Motility
- stationary, attachedPBDB
- Vision
- blindPBDB, for Bivalvia
Time the record covers
At least 27 million years on record.
The record covers at least 27.3 Mya to 11.7 ka. No occurrence read is dated outside 48.07 Mya to 0 Mya.
61 occurrences of Mytilopsis 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
61 occurrencesThese 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
16 formations
- Pebas Formation4
- Bowden Formation · Coastal Group2
- Caloosahatchee Formation2
- Borgloon Formation · Tongeren Group2
- Deltaic Mud Formation1
- New Orleans Barrier Trend Formation1
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The named rock units Mytilopsis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 39 occurrences have no formation on record, which is common for older literature.
Mytilopsis and its relatives
MioceneWhere Mytilopsis and its relatives were recorded in the Miocene.
Found in the same rock
1,446 taxa- Prososthenia21 sites
- Melanopsis lyrata20 sites
- Orygoceras dentaliforme20 sites
- Theodoxus sinjanus19 sites
- Prososthenia schwartzi18 sites
- Cyclothyrella klietmanni13 sites
- Melanopsis lanzaeana13 sites
- Prososthenia cincta13 sites
- Bania torbariana12 sites
- Fossarulus moniliferus7 sites
- Fossarulus6 sites
- Lymnaea6 sites
- Prososthenia neutra6 sites
- Anadara5 sites
- Anodontia alba5 sites
- Crassostrea virginica5 sites
- Bania valvatoides4 sites
- Crepidula plana4 sites
- Gyraulus pulici4 sites
- Japonactaeon punctostriata4 sites
- Littoraria irrorata4 sites
- Neverita duplicatus4 sites
- Orygoceras4 sites
- Pinna4 sites
The Paleobiology Database records 50 sites for Mytilopsis, 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
21 references- Middle Miocene freshwater mollusks from Lake Sinj (Dinaride lake system, SE Croatia; Langhian)29
- The Middle Miocene freshwater mollusk fauna of Lake Gacko (SE Bosnia and Herzegovina): taxonomic revision and paleoenvironmental analysis4
- Molluscs from the Miocene Pebas Formation of Peruvian and Colombian Amazonia4
- A Geological Reconnaissance in Haiti a Contribution to Antillean Geology3
- Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions2
- The molluscan fauna of the Borgloon Formation in Belgium (Rupelian, Early Oligocene)2
- Stratigraphy of newly exposed Quaternary seduments, eastern Orleans Parish, Louisiana2
- Pleistocene Mollusks from western Cuba2
- A new Miocene lacustrine mollusc fauna of the Dinaride Lake System and its palaeobiogeographic, palaeoecologic and taxonomic implications1
- Biodiversity structure of an exceptionally preserved Aquitanian bivalve assemblage (Meilhan, SW France)1
- Molluscs as a major part of subtropical shallow-water carbonate production - an example from a Middle Miocene oolite shoal (Upper Serravallian, Austria)1
- Mollusca: Fort Thompson Formation (Late Pleistocene)1
Each of the 61 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. 9 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 content1
Picture of Mytilopsis
- Source
- Wikipedia/Commons
- Credit
- Smithsonian Environmental Research Center
- Licence
- CC BY 2.0
- Commercial use
- the licence allows it
No 3D scan of Mytilopsis 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.
The description on this site
- Source
- Wikipedia, “Mytilopsis”
- 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 itDreissenidae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Conrad 1857)