NASSELLARIA Ehrenberg, 1876

Suzuki, Noritoshi, Caulet, Jean-Pierre & Dumitrica, Paulian, 2021, A new integrated morpho- and molecular systematic classification of Cenozoic radiolarians (Class Polycystinea) - suprageneric taxonomy and logical nomenclatorial acts, Geodiversitas 43 (15), pp. 405-573 : 468-469

Order NASSELLARIA Ehrenberg, 1876

Phylogenetic Molecular Lineage I ( Sandin et al. 2019)

DIAGNOSIS. — Multi-segmented Nassellaria having a simple cephalis and discrete dividers between the subsequent segments below the thorax.

REMARKS

Lineage I is the oldest clade in the entire Nassellaria order as the molecular clock indicates that it may date back to the Devonian ( Sandin et al. 2019). Although only one genus Eucyrtidium was confirmed as a member of Lineage I, Amphipyndacoidea , Archaeodictyomitroidea and Eucyrtidioidea are likewise considered members of Lineage I. This inclusion is done because the huge number of studies devoted to them over the last century.