Catalog entries: Pteroscenium pinnatum
Original description: Shell campanulate, smooth, somewhat longer than broad, with irregular delicate network of small roundish pores. Columella straight, with numerous (eight to twelve) triradiate verticils of ascending lateral branches, which are inserted in the shell-wall. The uppermost end of the columella is a conical apical horn. The three divergent feet are smooth, slender, conical, slightly curved, about as long as the shell, pinnate, with six to ten pairs of ascending lateral branches, parallel to those of the columella and inserted on the three vaulted lateral wings. (Fig. 14 exhibits the outside of the shell, fig.15 the internal structure of the cortina, fig. 16 the basal view.)
Last occurrence (top): Extant Data source: Lazarus et al. 2015 - "R age group"
First occurrence (base): within Quaternary Period (0.00-2.59Ma, base in Gelasian stage). Data source: Lazarus et al. 2015 - "R age group"
Plot of occurrence data:
Pteroscenium pinnatum compiled by the radiolaria@mikrotax project team viewed: 15-4-2021
Short stable page link: https://mikrotax.org/radiolaria/index.php?id=205259 Go to Archive.is to create a permanent copy of this page - citation notes