Stewartia floridana
Stewartia floridana is a bivalve of the family Lucinidae that is chemosymbiotic with sulfur-oxidizing bacteria.

Conrad, 1833 · CC0 · via Wikidata/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
- StewartiaPBDB
- Diet
- chemosymbioticPBDB, for Lucinidae
- Life habit
- deep infaunalPBDB, for Lucinidae
- Motility
- facultatively mobilePBDB, for Lucinidae
- Vision
- blindPBDB, for Bivalvia
Time the record covers
At least 762 thousand years on record.
The record covers at least 774 ka to 11.7 ka. No occurrence read is dated outside 2.58 Mya to 0 Mya.
9 occurrences of Stewartia floridana 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
9 occurrences- Pleistocene89%
- Holocene11%
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
3 formations
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The named rock units Stewartia floridana has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.
Stewartia floridana and its relatives
PleistoceneWhere Stewartia floridana and its relatives were recorded in the Pleistocene.
Found in the same rock
401 taxa- Crassinella lunulata4 sites
- Crepidula fornicata4 sites
- Mercenaria campechiensis4 sites
- Neverita duplicatus4 sites
- Olivella mutica4 sites
- Semele bellastriata4 sites
- Anadara (Larkinia) transversa3 sites
- Anomalocardia cuneimeris3 sites
- Anomia simplex3 sites
- Chione cancellata3 sites
- Crepidula plana3 sites
- Dinocardium robustum3 sites
- Diodora cayenensis3 sites
- Glycymeris americana3 sites
- Laevicardium serratum3 sites
- Melongena corona3 sites
- Mulinia lateralis3 sites
- Nucula (Nucula) proxima3 sites
- Oliva (Ispidula) sayana3 sites
- Parvilucina multistriata3 sites
- Pteromeris perplana3 sites
- Rangia (Rangia) cuneata3 sites
- Seila adamsii3 sites
- Semele proficua3 sites
The Paleobiology Database records 5 sites for Stewartia floridana, 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
7 references- Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions3
- Mollusca: Fort Thompson Formation (Late Pleistocene)1
- Petuch and Roberts, 20071
- The Pleistocene molluscan fauna from Leisley Shell Pit 1, Hillsborough County, Florida1
- Late Pliocene and Early Pleistocene Mollusca from the James City and Chowan River Formations at Lee Creek Mine1
- Stratigraphy of newly exposed Quaternary sediments, eastern Orleans Parish, Louisiana1
- Review of the evidence on which the human remains found at Vero, Florida, are referred to the Pleistocene1
Each of the 9 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 content2

Picture of Stewartia floridana
- Source
- Wikidata/Commons
- Credit
- Conrad, 1833
- Licence
- CC0
- Commercial use
- the licence allows it
CT scan
- Source
- MorphoSource
- Licence
- In Copyright
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Stewartia floridana · fmnh:invertebrate zoology:59608
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 itStewartia through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Conrad 1833)