Genus · accepted · checked 2026-09-04

Ceratium

WoRMS 109506ITIS 10397key worms:109506

842
observations: 409
sampling events: 1
datasets: 1
species under it

Observed in

Phytoplankton 421 obs · 409 events
name used: Ceratium dinoflagellate, thecate · code 612

One row per dataset, 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.

Under it · 1 taxon

sp Ceratium divaricatum421

Groups

calcofi_phytoplankton:dinoflagellate_thecate

Note from the crosswalk

2026-09-04: itis_id 10397 via WoRMS external link

Ways in

Explorermaps, sections and time series of this taxon — opens prefilled
https://calcofi.io/explore/?taxon=worms:109506
db-querySQL in your browser — the shell opens with this query
https://calcofi.io/db-query/?sql=SELECT+%2A+FROM+__TBL%3Aobs_bio__+WHERE+taxon_key+%3D+%27worms%3A109506%27+LIMIT+100%3B
ERDDAPCalCOFI's own server, the Phytoplankton table constrained to this taxon
https://erddap.calcofi.io/erddap/tabledap/calcofi_phytoplankton.html?&taxon_key=%22worms:109506%22

library(calcofi4r)
con <- cc_get_db()                      # the promoted release
tbl(con, "obs_bio") |> filter(taxon_key == "worms:109506")

Python

import calcofi4py as cc
con = cc.cc_get_db()
con.sql("SELECT * FROM obs_bio WHERE taxon_key = 'worms:109506'").df()

This page as data

JSONthis taxon's entry of the release record, verbatim
https://calcofi.io/species/worms-109506.json

Read from taxa.json of release v2026.09.06, written at release by calcofi4db::build_taxa_catalog(). The catalog's index is /species/.