Pleurofusia fluctuosa
Pleurofusia fluctuosa is an extinct species of sea snail, a marine gastropod mollusk in the family Drilliidae.

via iDigBio · CC0 · 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
- PleurofusiaPBDB
- Diet
- carnivorePBDB, for Turridae
- Life habit
- epifaunalPBDB, for Turridae
- Motility
- actively mobilePBDB, for Turridae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At most 15 million years on record.
Every occurrence read is dated to somewhere between 48.07 Mya and 33.9 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
9 occurrences of Pleurofusia fluctuosa on record, most of them in the Eocene. 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
9 occurrences- Eocene100%
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
1 formation
- Moodys Branch Formation · Jackson Group9
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The named rock units Pleurofusia fluctuosa has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Pleurofusia fluctuosa and its relatives
EoceneWhere Pleurofusia fluctuosa and its relatives were recorded in the Eocene.
Found in the same rock
256 taxa- Caestocorbula wailesiana6 sites
- Calyptraphorus stamineus6 sites
- Nucula (Nucula) sphenopsis6 sites
- Pitar securiformis6 sites
- Bathytormus flexurus5 sites
- Calyptraea (Trochita) aperta5 sites
- Eburneopecten scintillatus5 sites
- Euspira jacksonensis5 sites
- Bittium koeneni4 sites
- Clavilithes4 sites
- Corbula densata4 sites
- Glycymeris filosa4 sites
- Hilgardia multilineata4 sites
- Hipponix4 sites
- Kapalmerella arenicola4 sites
- Lirodiscus jacksonensis4 sites
- Melanella jacksonensis4 sites
- Polinices weisbordi4 sites
- Retusa jacksonensis4 sites
- Spisula jacksonensis4 sites
- Turritella perdita4 sites
- Venericardia (Rotundicardia) diversidentata4 sites
- Acteon annectens3 sites
- Agaronia media3 sites
The Paleobiology Database records 6 sites for Pleurofusia fluctuosa, 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
6 references- Invertebrate Macropaleontolgy of the Clarke County Mississippi Area3
- Stratigraphic Distribution of Paleocene and Eocene Fossils in the Eastern Gulf Coast Region2
- Resilience of marine invertebrate communities during the early Cenozoic hyperthermals1
- Fossil assemblages of a marine transgressive sand, Moody''s Branch Formation (Upper Eocene), Louisiana and Mississippi1
- Mollusca of the Moodys Branch Formation, Mississippi1
- Catalogue of the Paleocene and Eocene mollusca of the southern and eastern United States. Part 1. Pelecypoda, Amphineura, Pteropoda, Scaphopoda and Cephalopoda1
Each of the 9 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. 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 Pleurofusia fluctuosa
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Pleurofusia fluctuosa 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 itPleurofusia through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Harris 1937