Distorsio decussata
Distorsio decussata, commonly named the decussate distorsio, is a species of medium-sized sea snail, a marine gastropod mollusk in the family Personidae, the Distortio snails.

Shellnut · CC BY-SA 3.0 · 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
- DistorsioPBDB
- Diet
- carnivorePBDB, for Personidae
- Life habit
- epifaunalPBDB, for Personidae
- Motility
- actively mobilePBDB, for Personidae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At least 9 million years on record.
The record covers at least 11.63 Mya to 2.58 Mya. No occurrence read is dated outside 15.98 Mya to 11.7 ka.
64 occurrences of Distorsio decussata 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
64 occurrences- Miocene67%
- Pliocene21%
- Pleistocene12%
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
20 formations
- Gatun Formation34
- Nancy Point Formation · Bocas del Toro Group4
- Armuelles Formation · Charco Azul Group3
- Cayo Agua Formation · Bocas del Toro Group3
- Angostura Formation · Santiago Group2
- Armuelles Formation · Charco Azul Group2
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The named rock units Distorsio decussata 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.
Distorsio decussata and its relatives
MioceneWhere Distorsio decussata and its relatives were recorded in the Miocene.
Found in the same rock
980 taxa- Polystira13 sites
- Callocardia (Agriopoma) gatunensis11 sites
- Stigmaulax guppiana10 sites
- Lirophora (Panchione) mactropsis9 sites
- Oliva gatunensis9 sites
- Architectonica nobilis8 sites
- Conus molis8 sites
- Lepidopecten scissuratus8 sites
- Natica bolus8 sites
- Naticarius8 sites
- Strioterebrum8 sites
- Strombina (Strombina) lessepsiana8 sites
- Anadara (Rasia) dariensis7 sites
- Antillophos (Rhipophos) metuloides7 sites
- Polinices stanislasmeunieri7 sites
- Psammacoma gatunensis7 sites
- Turritella (Broderiptella) mimetes7 sites
- Volvarina leander7 sites
- Arcinella arcinella6 sites
- Bellucina actinus6 sites
- Bivetiella dariena6 sites
- Gadilopsis6 sites
- Saccella balboae6 sites
- Turritella (Bactrospira) altilira6 sites
The Paleobiology Database records 20 sites for Distorsio decussata, 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
13 references- Neogene Tonnoidean Gastropods of Tropical and South America; contributions to the Dominican Republic and Panama Paleontology Projects and Uplift of the Central American Isthmus21
- Geology and paleontology of Canal Zone and adjoining parts of Panama: Description of Tertiary mollusks (gastropods: Vermetidae to Thaididae)15
- Unpublished notes on Caribbean collection of the Naturhistorisches Museum Basel11
- A paleobiotic survey of Caribbean faunas from the Neogene of the Isthmus of Panama4
- Tertiary and Quaternary fossils from Burica Peninsula of Panama and Costa Rica3
- Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions2
- A Pliocene fauna from Western Ecuador2
- Bivalvos y gasterópodos de la formacion Ferrotepec (Mioceno Medio) de Michoacan1
- Comparacion entre la fauna malacologica de las principales formaciones del Plioceno marino de Costa Rica, America Central1
- Geology and paleontology of canal zone and adjoing parts of Panama: Description of Tertiary mollusks (gastropods: Eulimidae, Marginellidae to Helminthoglyptidae).1
- Olsson, 19641
- Algunos moluscos del Terciario Medio de Colombia1
Each of the 64 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. 1 further reference is 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 Distorsio decussata
- Source
- Wikipedia/Commons
- Credit
- Shellnut
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Distorsio decussata 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 itDistorsio through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Valenciennes 1832)