Nannotax Enabling nannofossil research

Description: Similar to D. brouweri but ray tips simple, without proximal extensions. N.B. Discoasters with this general morphology also often occur through dissolution or poor development of other species, e.g. D. exilis, D. brouweri.

Remarks: Bukry proposed this name for D.brouweri variants without bent ray tips (i.e. proximal blades). As he stated, such specimens occur throughout the range of D.brouweri; but they are seldom common and are mainly preservational artefacts. He also, however, included Middle Miocene forms in his synonymy, and species concept. Such forms, with very weak bifurcations or blunt ray tips, are rather common in NN9/10, they possibly represent an intermediate between D. exilis and D. brouweri.

Original description: