CalCOFI.io CalCOFI.io open data ecosystem

Actinocyclus

Genusaccepted · checked 2026-09-04WoRMS 148944ITIS 2655key worms:148944
i

2026-09-04: itis_id 2655 via WoRMS external link

calcofi_phytoplankton:diatom_centric

Actinocyclus is a genus of diatoms in the family Hemidiscaceae.W CalCOFI holds 21 observations of it in 1 dataset between 1996 and 2022, across 3 taxa under it.R

21
observations
1,636
records
409
sampling events
1996–2022
years
1
datasets
1
species under it
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Photo · Kristian Peters http://www.korseby.net/outer/flora/algae/index.html · CC BY-SA 3.0 · commons

Observed in 1 dataset
i

One row per dataset, and beside it one cell per year, darker with more observations — the same strip the front door draws per dataset. Each row ends with the name that dataset uses (dataset_taxon); the accepted name is written once, in the title above. A quiet pill marks a name the authority does not accept.

  • 818 obs409 events1996–2022
    name used: Actinocyclus diatom, centric · code 316
    name used: Actinocyclus diatom, centric · code 600

Ways inExplorerdb-queryERDDAPRPythonThis page as JSON

Code and endpoints ERDDAP · R · Python · JSON
ERDDAPCalCOFI's own server, the Phytoplankton table constrained to this taxon
https://erddap.calcofi.io/erddap/tabledap/calcofi_phytoplankton.html?&taxon_key=%22worms:148944%22

Read from taxa.json of release v2026.10.20, written at release by calcofi4db::build_taxa_catalog(). The catalog's index is /species/.

How big is it not on record

Not on record: no authority the fetcher reads carries a length for this taxon (a genus page could show the range of its species).

Under it 2 taxa · Actinocyclus octonarius most observed
Lineage 8 ranks · Chromista to Hemidiscaceae
Credits silhouette · photo · text
Elsewhere Wikidata · iNaturalist · GBIF

WikidataiNaturalistGBIF

The same organism on the services the faces were fetched from; the authorities' own pages are the ids in the head.

Cite the release, v2026.10.20

Cite the release, v2026.10.20; each dataset's own citation, licence and DOI are on its page. How to cite ↗