Retilaskeya bicolor
Retilaskeya bicolor is a species of sea snail, a gastropod in the family Newtoniellidae, which is known from the Caribbean Sea and the Gulf of Mexico. It was described by C. B. Adams, in 1845.

Jacob Weston · 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
- RetilaskeyaPBDB
- Diet
- carnivorePBDB, for Cerithiopsidae
- Life habit
- epifaunalPBDB, for Cerithiopsidae
- Motility
- actively mobilePBDB, for Cerithiopsidae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At least 3.4 million years on record.
The record covers at least 3.6 Mya to 129 ka. No occurrence read is dated outside 5.333 Mya to 11.7 ka.
11 occurrences of Retilaskeya bicolor 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
11 occurrences- Pliocene45%
- Pleistocene55%
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
8 formations
- Talparo Formation3
- Caloosahatchee Formation2
- Mare Formation · Cabo Blanco Group1
- Waccamaw Formation1
- Duplin Formation1
- James City Formation1
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The named rock units Retilaskeya bicolor has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Retilaskeya bicolor and its relatives
PleistoceneWhere Retilaskeya bicolor and its relatives were recorded in the Pleistocene.
Found in the same rock
747 taxa- Chione cancellata6 sites
- Diodora6 sites
- Nassarius antillarum6 sites
- Plicatula gibbosa6 sites
- Abra aequalis5 sites
- Aesopus5 sites
- Arcopsis adamsi5 sites
- Calyptraea centralis5 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
- Caecum4 sites
- Calliostoma4 sites
- Chama4 sites
- Conradostrea sculpturata4 sites
- Crassinella4 sites
- Crepidula plana4 sites
- Diodora cayenensis4 sites
- Epitonium4 sites
The Paleobiology Database records 9 sites for Retilaskeya bicolor, 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
1 referenceEach of the 11 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. Each entry links to the Paleobiology Database's own record for the work.
Media and terms
Media content1
Picture of Retilaskeya bicolor
- Source
- Wikipedia/Commons
- Credit
- Jacob Weston
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
No 3D scan of Retilaskeya bicolor 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 itRetilaskeya through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Adams 1845)