Ralfs ex Pritchard, 1861 according to some sources. [details]
Achnanthes coarctata var sinoensis [details]
Actinocyclus roperii (de Brébisson) Grunow ex Van Heurck, 1881 [details]
Referred to as Chaetoceros affinis by some sources. [details]
Referred to as Chaetoceros armatus by some sources. [details]
Referred to as Chaetoceros atlanticus by some sources. [details]
Referred to as Chaetoceros boreale by some sources. [details]
Referred to as Chaetoceros coarctatum by some sources. [details]
Referred to as Chaetoceros compressum by some sources. [details]
Referred to as Chaetoceros concavicorne by some sources. [details]
Referred to as Chaetoceros constrictum by some sources. [details]
Also referred to as Chaetoceros convexicornis. [details]
Referred to as Chaetoceros convolutum by some sources. [details]
Referred to as Chaetoceros costatum by some sources. [details]
Referred to as Chaetoceros curvisetum by some sources. [details]
Referred to as Chaetoceros danicum by some sources. [details]
Referred to as Chaetoceros debile by some sources. [details]
Referred to as Chaetoceros didymum by N. I. Hendey. [details]
Referred to as Chaetoceros diversus by N. I. Hendey. [details]
Referred to by N. I. Hendey as Chaetoceros externum. [details]
Also referred to as Chaetoceros furcellatum. [details]
Also referred to as Chaetoceros holsaticum. [details]
Also referred to as Chaetoceros imbricatum. [details]
Also referred to as Chaetoceros laciniosum. [details]
Also referred to as Chaetoceros lorenzianum. [details]
Also referred to as Chaetoceros perpusillum. [details]
Referred to as Chaetoceros peruvianum by some sources. [details]
Also referred to as Chaetoceros pseudocrinitum. [details]
Referred to as Chaetoceros schuttii by some sources. [details]
Chaetoceros seriacanthus according to N. I. Hendey [details]
Also referred to as Chaetoceros septentrionale. [details]
Also referred to as Chaetoceros sociale. [details]
Also referred to as Chaetoceros subsecundum. [details]
Also referred to as Chaetoceros tortissimum. [details]
Also referred to as Chaetoceros wighami. [details]
Often synonymised with Amphora terroris Ehrenb. 1953 (as in Hartley, 1986), but this is very doubtful as ... [details]
Species is synonymised with Chaetoceros subsecundus according to N. I. Hendey. [details]
Synonymised with Chaetoceros subsecundus according to N. I. Hendey. [details]
Considered by some authorities to be a variety of Achnanthes brevipes [details]