Retilaskeya
Retilaskeya is a genus of minute sea snails, marine gastropod molluscs in the family Newtoniellidae. It was described by Marshall, in 1978.

MNHN - Cecalupo A. & Perugia I. - 2020 · CC BY 4.0 · 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
- CerithiopsidaePBDB
- Diet
- carnivorePBDB, for Cerithiopsidae
- Life habit
- epifaunalPBDB, for Cerithiopsidae
- Motility
- actively mobilePBDB, for Cerithiopsidae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At least 61 million years on record.
The record covers at least 61.66 Mya to 129 ka. No occurrence read is dated outside 66 Mya to 11.7 ka.
17 occurrences of Retilaskeya on record, most of them in the Pliocene. 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
17 occurrences- Paleocene18%
- Pliocene47%
- Pleistocene35%
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
10 formations
- Talparo Formation3
- Ortovero Clay Formation3
- Danian Limestone Formation3
- Caloosahatchee Formation2
- Mare Formation · Cabo Blanco Group1
- Waccamaw Formation1
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The named rock units Retilaskeya has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Retilaskeya and its relatives
PlioceneWhere Retilaskeya and its relatives were recorded in the Pliocene.
Found in the same rock
848 taxa- Chione cancellata6 sites
- Diodora6 sites
- Nassarius antillarum6 sites
- Plicatula gibbosa6 sites
- Abra aequalis5 sites
- Aesopus5 sites
- Arcopsis adamsi5 sites
- Caecum5 sites
- Calyptraea centralis5 sites
- Cerithiopsis5 sites
- Crassinella lunulata5 sites
- Nucula (Nucula) proxima5 sites
- Parvilucina multistriata5 sites
- Seila adamsii5 sites
- Tectonatica pusilla5 sites
- Anadara (Rasia) lienosa4 sites
- Archierato maugeriae4 sites
- Astyris lunata4 sites
- Calliostoma4 sites
- Chama4 sites
- Conradostrea sculpturata4 sites
- Crassinella4 sites
- Crepidula plana4 sites
- Diodora cayenensis4 sites
The Paleobiology Database records 13 sites for Retilaskeya, 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- Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions11
- A catalogue of Danian gastropods from the Baunekule facies, Faxe Formation, Denmark3
- Notes on some Pliocene gastropods from Rio Torsero, Western Liguria, Italy3
Each of the 17 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 Retilaskeya
- Source
- Wikipedia/Commons
- Credit
- MNHN - Cecalupo A. & Perugia I. - 2020
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
No 3D scan of Retilaskeya 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, “Retilaskeya”
- 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 itCerithiopsidae through timeFormations of the PlioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Marshall 1978