Gemmula (Coronia)

Stichting Observation International · CC BY-NC 4.0 · via GBIF. 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
- GemmulaPBDB
- Diet
- carnivorePBDB, for Turridae
- Life habit
- epifaunalPBDB, for Turridae
- Motility
- actively mobilePBDB, for Turridae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At least 42 million years on record.
The record covers at least 66 Mya to 23.04 Mya. No occurrence read is dated outside 72.2 Mya to 20.45 Mya.
274 occurrences of Gemmula (Coronia) on record, most of them in the Eocene. 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
274 occurrences- Late Cretaceousunder 1%
- Paleocene11%
- Eocene78%
- Oligocene10%
- Mioceneunder 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
31 formations
- Cook Mountain Formation · Claiborne Group74
- Weches Formation · Claiborne Group34
- Byram Formation · Vicksburg Group25
- Reklaw Formation · Claiborne Group19
- Moodys Branch Formation · Jackson Group17
- Hatchetigbee Bluff Formation · Wilcox Group12
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The named rock units Gemmula (Coronia) has been recovered from, largest first. Drawn where the rock is now, not where it formed. 7 further formations hold fewer occurrences each and are not listed. 5 occurrences have no formation on record, which is common for older literature.
Gemmula (Coronia) and its relatives
EoceneWhere Gemmula (Coronia) and its relatives were recorded in the Eocene.
Found in the same rock
1,206 taxa- Turritella54 sites
- Cadulus46 sites
- Levifusus42 sites
- Architectonica36 sites
- Ficus36 sites
- Athleta petrosa34 sites
- Microdrillia34 sites
- Natica32 sites
- Calyptraea (Trochita) aperta30 sites
- Pyramidella30 sites
- Dentalium29 sites
- Pseudoliva vetusta29 sites
- Ancilla staminea27 sites
- Pitar27 sites
- Latirus moorei26 sites
- Acteon25 sites
- Agaronia25 sites
- Falsifusus25 sites
- Latirus25 sites
- Levifusus mortoniopsis25 sites
- Surculoma25 sites
- Athleta (Volutocorbis)23 sites
- Clavilithes23 sites
- Polinices23 sites
The Paleobiology Database records 128 sites for Gemmula (Coronia), and this reads all 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
24 references- Resilience of marine invertebrate communities during the early Cenozoic hyperthermals120
- Catalogue of the Paleocene and Eocene mollusca of the southern and eastern United States. Part 1. Pelecypoda, Amphineura, Pteropoda, Scaphopoda and Cephalopoda46
- Testing for patterns of faunal persistence in the early Oligocene Byram Formation of Mississippi18
- Faunal stability and environmental change in the middle Eocene Gulf Coastal Plain (PhD Thesis, Harvard University)18
- Stratigraphic Distribution of Paleocene and Eocene Fossils in the Eastern Gulf Coast Region9
- The Molluscan Macrofauna of the Reklaw Formation, Marquez Member (Eocene: Lower Claibornian), in Texas8
- Lower Oligocene Gastropoda, Scaphopoda, and Cephalopoda of the Vicksburg Group in Mississippi8
- Impact of lithification on the diversity, size distribution, and recovery dynamics of marine invertebrate assemblages7
- Invertebrate Macropaleontolgy of the Clarke County Mississippi Area6
- Environmental and biological controls on the diversity and ecology of Late Cretaceous through early Paleogene marine ecosystems in the US Gulf Coastal Plain5
- Fossil assemblages of a marine transgressive sand, Moody''s Branch Formation (Upper Eocene), Louisiana and Mississippi5
- Marine Macro-Invertebrate Paleoenvirionmental Interpretation of the Harvey Site (Cook Mountain, Eocene) in North-Central Louisiana4
Each of the 274 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. 12 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 Gemmula (Coronia)
- Source
- GBIF
- Credit
- Stichting Observation International
- Licence
- CC BY-NC 4.0
- Commercial use
- the licence does not allow it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itGemmula through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0.