Ringicula
Ringicula is a genus of small deepwater sea snails, marine gastropod molluscs or micromolluscs belonging to the family Ringiculidae. Members of the species have a solid shell. The shell has anterior notch and a thick lip.

Yasunori Kano, Bastian Brenzinger, Alexander Nützel, Nerida G. Wilson & Michael Schrödl · 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
- RingiculidaePBDB
- Diet
- carnivorePBDB
- Life habit
- epifaunalPBDB, for Ringiculidae
- Motility
- actively mobilePBDB, for Ringiculidae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At least 161 million years on record.
The record covers at least 161.5 Mya to 11.7 ka. No occurrence read is dated outside 165.3 Mya to 0 Mya.
626 occurrences of Ringicula 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
626 occurrences- Middle Jurassicunder 1%
- Early Cretaceousunder 1%
- Late Cretaceous20%
- Paleocene10%
- Eocene23%
- Oligocene7%
- Miocene25%
- Pliocene10%
- Pleistocene4%
- Holoceneunder 1%
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
128 formations
- Cook Mountain Formation · Claiborne Group29
- Byram Formation · Vicksburg Group28
- Providence Formation20
- Ripley Formation · Selma Group18
- Gatun Formation18
- Lisbon Formation · Claiborne Group15
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The named rock units Ringicula has been recovered from, largest first. Drawn where the rock is now, not where it formed. 104 further formations hold fewer occurrences each and are not listed. 137 occurrences have no formation on record, which is common for older literature.
Ringicula and its relatives
MioceneWhere Ringicula and its relatives were recorded in the Miocene.
Found in the same rock
2,678 taxa- Turritella64 sites
- Nuculana56 sites
- Corbula47 sites
- Euspira rectilabrum47 sites
- Cadulus46 sites
- Cymbophora45 sites
- Turritella trilira45 sites
- Crenella serica44 sites
- Syncyclonema42 sites
- Acteon41 sites
- Cylichna41 sites
- Anomia argentaria40 sites
- Striarca40 sites
- Cubitostrea tecticosta38 sites
- Tellina37 sites
- Paladmete cancellaria36 sites
- Hamulus onyx34 sites
- Camptonectes bubonis33 sites
- Micrabacia33 sites
- Trachycardium eufaulensis33 sites
- Turritella bilira32 sites
- Crassatella vadosa31 sites
- Glycymeris31 sites
- Granocardium31 sites
The Paleobiology Database records 437 sites for Ringicula, and this reads 240 of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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
146 references- Die Fauna des marinen Miozäns von Kevelaer (Niederrhein). Band 4 Gastropoda ab Mitridae59
- Resilience of marine invertebrate communities during the early Cenozoic hyperthermals40
- Upper Cretaceous (Maestrichtian) larger invertebrates from the Haustator bilira Assemblage Zone in the Atlantic Coastal Plain with further data for the East Gulf28
- Testing for patterns of faunal persistence in the early Oligocene Byram Formation of Mississippi25
- A paleobiotic survey of Caribbean faunas from the Neogene of the Isthmus of Panama24
- Faunal stability and environmental change in the middle Eocene Gulf Coastal Plain (PhD Thesis, Harvard University)20
- Upper Cretaceous (Maestrichtian) Mollusca from the Haustator bilira Assemblage Zone in the East Gulf Coastal Plain20
- The Molluscan Fauna of the Alum Bluff Group of Florida17
- Catalogue of the Paleocene and Eocene mollusca of the southern and eastern United States. Part 1. Pelecypoda, Amphineura, Pteropoda, Scaphopoda and Cephalopoda15
- Archeogastropoda, Mesogastropoda and stratigraphy of the Ripley, Owl Creek, and Prairie Bluff Formations15
- Deshayes, 182415
- Geology and paleontology of canal zone and adjoing parts of Panama: Description of Tertiary mollusks (gastropods: Eulimidae, Marginellidae to Helminthoglyptidae).13
Each of the 626 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. 134 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 content2
Picture of Ringicula
- Source
- Wikipedia/Commons
- Credit
- Yasunori Kano, Bastian Brenzinger, Alexander Nützel, Nerida G. Wilson & Michael Schrödl
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
3D model
- Source
- Sketchfab
- Credit
- Shellie Luallin
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
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, “Ringicula”
- 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 itRingiculidae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Deshayes 1838