Parvanachis obesa
Parvanachis obesa, common name the fat dovesnail, is a species of sea snail, a marine gastropod mollusc in the family Columbellidae, the dove snails.

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
- ParvanachisPBDB
- Diet
- carnivorePBDB, for Columbellidae
- Life habit
- epifaunalPBDB, for Columbellidae
- Motility
- actively mobilePBDB, for Columbellidae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At least 5.3 million years on record.
The record covers at least 5.333 Mya to 11.7 ka. No occurrence read is dated outside 11.63 Mya to 0 Mya.
46 occurrences of Parvanachis obesa 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
46 occurrences- Miocene11%
- Pliocene26%
- Pleistocene46%
- Holocene17%
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
13 formations
- James City Formation8
- Talparo Formation6
- Springvale Formation5
- Mare Formation · Cabo Blanco Group4
- Pamlico Formation3
- Acredale Formation2
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The named rock units Parvanachis obesa has been recovered from, largest first. Drawn where the rock is now, not where it formed. 8 occurrences have no formation on record, which is common for older literature.
Parvanachis obesa and its relatives
PleistoceneWhere Parvanachis obesa and its relatives were recorded in the Pleistocene.
Found in the same rock
895 taxa- Abra aequalis14 sites
- Crepidula fornicata14 sites
- Crepidula plana14 sites
- Nuculana acuta14 sites
- Mulinia lateralis13 sites
- Anomia simplex12 sites
- Boonea seminuda12 sites
- Calyptraea centralis12 sites
- Caryocorbula (Caryocorbula)12 sites
- Chione cancellata12 sites
- Nassarius antillarum12 sites
- Saccella12 sites
- Seila adamsii12 sites
- Plicatula gibbosa11 sites
- Astyris lunata10 sites
- Conradostrea sculpturata10 sites
- Dentalium (Dentalium)10 sites
- Naticarius canrena10 sites
- Olivella (Minioliva)10 sites
- Olivella mutica10 sites
- Tectonatica pusilla10 sites
- Acteocina canaliculata9 sites
- Argopecten9 sites
- Calliostoma (Elmerlinia) olssoni9 sites
The Paleobiology Database records 30 sites for Parvanachis obesa, 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
14 references- Miocene and Pliocene mollusks from Trinidad13
- Cenozoic Mollusks from the drillholes Cassino and Palmares do Sul of the Coastal Plain of Rio Grande do Sul6
- Studies on the marine Pleistocene: Part II. The marine Pleistocene mollusks of eastern North America5
- Late Cenozoic gastropods from northern Venezuela5
- Checklist of megafossils from the James City Formation (Lower Pleistocene) at Johnson Point, Craven County, North Carolina4
- Community replacement of a Pleistocene Crepidula biostrome4
- The Pleistocene molluscan fauna from Leisley Shell Pit 1, Hillsborough County, Florida2
- Mollusca: Fort Thompson Formation (Late Pleistocene)1
- Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions1
- The benthic mollusk faunas of two contrasting reef paleosubenvironments: Falmouth Formation (late Pleistocene, last interglacial), Jamaica1
- The fauna and paleoecology of the Late Pleistocene marine sediments of southeastern Virginia1
- Stratigraphy of newly exposed Quaternary sediments, eastern Orleans Parish, Louisiana1
Each of the 46 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. 2 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 Parvanachis obesa
- Source
- Wikipedia/Commons
- Credit
- Smithsonian Environmental Research Center
- Licence
- CC BY 2.0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
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 itParvanachis through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Adams 1845)