Nannotax Enabling nannofossil research

Description: Coccoliths small 3-5μm, Late Pliocene forms, intergrades with P. lacunosa.

Remarks:
N.B. Coccolithus doronicoides
Black and Barnes, 1961. According to Young (1998) "The holotype of this
species is a proximal view TEM of a reticulofenestrid coccolith 3.4 μm
long which might be either a Gephyrocapsa or Reticulofenestra, as it is not possible to tell if a bridge is present. Re-examination of the type material (HMS Challenger
dredging 338) reveals that it contains an Holocene or Late Pleistocene
assemblage, with minimal reworking. The assemblage contains abundant Gephyrocapsa oceanica but no true Reticulofenestra of this size. So Coccolithus doronicoides is best regarded as a junior synonym of G. oceanica Kamptner, 1943 and the name should certainly not be used for Neogene Reticulofenestra specimens."

Range: NN15 to 18.

Synonyms: R. ampla Sato, Kameo and Takayama, 1991 - synonym of R. minutula and homonym of R. ampla (Kamptner) Jafar; R. doronicoides (Black and Barnes, 1961) Pujos, 1985 [Coccolithus] - see taxonomic notes.