This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.
Current identification/main database link: Spongostaurus gracilis (Swanberg et al. 1985)
Original Description
Description. Sphaerellarian radiolarian with large (ca. 200 ~m) spongiose sphaeroid siliceous skeleton. Skeleton surrounded by massive central capsule (Plate I, 1) drawn into several (usually 3-5) arm-like projections, 1-2 cm in length and radiating from the central skeleton (Plate I, 2). The projections may bifurcate. Extremely delicate skeletal material extends into the arms and extracapsular region surrounding them. Capsular projections provided with large oily globules roughly arranged in rows but absent from narrow constriction near base of projection. Entire central capsule including projections surrounded by gelatinous sheath penetrated by rhizopodia. As many as 10 unusually heavy rhizopodia emerge from along one side of each capsular projection, extending beyond its tip, through the gelatin into the outer milieu. Gelatinous zone occupied by symbiotic algae, including probably dinoflagellates and occasionally Pyrocystis lunula.
Swanberg, N. R., Anderson, O. R. & Bennett, P. (1985). Spongiose spumellarian Radiolaria: The functional morphology of the radiolarian skeleton with a description of Spongostaurus, a new genus. Marine Micropaleontology. 9(5): 455-464. gsReferences:

![]() |
Spongostaurus gracilis compiled by the radiolaria@mikrotax project team viewed: 12-6-2026
Short stable page link: https://mikrotax.org/radiolaria/index.php?id=262460 Go to Archive.is to create a permanent copy of this page - citation notes |
This policy contains information about your privacy. By posting, you are declaring that you understand this policy:
This policy is subject to change at any time and without notice.
These terms and conditions contain rules about posting comments. By submitting a comment, you are declaring that you agree with these rules:
Failure to comply with these rules may result in being banned from submitting further comments.
These terms and conditions are subject to change at any time and without notice.
Comments