Eunotia
Eunotia is a genus of diatoms. They are fresh water diatoms, specifically common in lakes, and they are also common in fossil records, although their siliceous wall design may have been lost and they appear plane, an example is Eunotia tetradon.

Kristian Peters http://www.korseby.net/outer/flora/algae/index.html · CC BY-SA 3.0 · 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
- EunotiaceaePBDB
- Diet
- "photoautotroph"PBDB, for Bacillariophyceae
- Environment
- marine,brackish,freshwaterPBDB, for Bacillariophyceae
Time the record covers
At least 5.2 million years on record.
The record covers at least 5.333 Mya to 129 ka. No occurrence read is dated outside 56 Mya to 0 Mya.
39 occurrences of Eunotia 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
39 occurrencesThese 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
1 formation
Loading coastlines…
The named rock units Eunotia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 33 occurrences have no formation on record, which is common for older literature.
Eunotia and its relatives
PleistoceneWhere Eunotia and its relatives were recorded in the Pleistocene.
Found in the same rock
200 taxa- Actinocyclus28 sites
- Thalassiosira28 sites
- Neodenticula26 sites
- Paralia sulcata24 sites
- Rhizosolenia24 sites
- Bacterosira22 sites
- Fragilariopsis21 sites
- Nitzschia19 sites
- Thalassionema18 sites
- Thalassiothrix longissima17 sites
- Delphineis14 sites
- Proboscia14 sites
- Paralia13 sites
- Pyxidicula13 sites
- Porosira12 sites
- Odontella10 sites
- Cocconeis9 sites
- Coscinodiscus marginatus8 sites
- Detonula8 sites
- Navicula8 sites
- Chaetoceros7 sites
- Coscinodiscus7 sites
- Fragilaria6 sites
- Pinnularia6 sites
The Paleobiology Database records 33 sites for Eunotia, 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
9 references- Site U13438
- Site U13448
- Site U13458
- Flora of the Latah formation of Spokane, Washington, and Coeur d'Alene, Idaho6
- Site U13393
- Site U14452
- Late Pleistocene stratigraphy at Boliden, northern Sweden2
- Site U13421
- Tertiary flora from the Rio Pichileufu, Argentina1
Each of the 39 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 doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1
Picture of Eunotia
- Source
- Wikipedia/Commons
- Credit
- Kristian Peters http://www.korseby.net/outer/flora/algae/index.html
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Eunotia 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
- Source
- Wikipedia, “Eunotia”
- 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 itEunotiaceae through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Ehrenberg 1837