Coscinodiscus
Searched as Coscinodiscus curvatulus minor. The Paleobiology Database treats Coscinodiscus as the accepted name.
Coscinodiscus is a genus of centric diatoms in the family Coscinodiscaceae. It is the type genus of its family. There are over 200 species of Coscinodiscus. Coscinodiscus argus Ehrenberg 1839 is the type species of this genus.

Geographer · 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
- CoscinodiscaceaePBDB
- Diet
- "photoautotroph"PBDB, for Bacillariophyceae
- Environment
- marine,brackish,freshwaterPBDB, for Bacillariophyceae
Time the record covers
At most 21 million years on record.
The one occurrence read is dated to somewhere between 23.04 Mya and 2.58 Mya, which is a dating window rather than a span.
1 occurrence of Coscinodiscus on record, most of them in the Miocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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
1 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.
Coscinodiscus and its relatives
MioceneWhere Coscinodiscus and its relatives were recorded in the Miocene.
Found in the same rock
741 taxa- Chaetoceros121 sites
- Actinocyclus107 sites
- Denticulopsis106 sites
- Actinocyclus ingens105 sites
- Eucampia98 sites
- Paralia sulcata86 sites
- Stephanopyxis turris76 sites
- Fragilariopsis74 sites
- Thalassiosira67 sites
- Thalassionema66 sites
- Stephanopyxis59 sites
- Dactyliosolen58 sites
- Actinoptychus senarius55 sites
- Trinacria54 sites
- Stellarima52 sites
- Actinocyclus octonarius46 sites
- Azpeitia42 sites
- Rhizosolenia39 sites
- Triceratium36 sites
- Aulacodiscus31 sites
- Endictya31 sites
- Pseudammodochium30 sites
- Proboscia29 sites
- Shionodiscus29 sites
The Paleobiology Database records 1,187 sites for Coscinodiscus, and this reads 240 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 1 occurrence 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 Coscinodiscus
- Source
- Wikipedia/Commons
- Credit
- Geographer
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Coscinodiscus 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 itCoscinodiscaceae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Ehrenberg 1839