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![]() | Orostaurus duplex Friend & Riedel 1967 | |||
![]() | Orostaurus simplex Friend & Riedel 1967 |
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Current identification:
Original Description
Vertex spicule consisting of two groups of rays (3-6, commonly 3 or 4, in each group), at the ends of a short median bar, Four (or rarely 3) of these rays are much longer than the others, and bear lateral branches which join to form a simple laminar network. These longer rays are herein conventionally regarded as being directed downward. In at least one species (the type species), a second latticed lamina forms a small inverted cup just below the junction of the rays.
Etymology: From the Greek oros = hill; and stauros = cross.
Friend, J. K. & Riedel, W. R. (1967). Cenozoic orosphaerid radiolarians from tropical Pacific sediments. Micropaleontology. 13(2): 217-232. gsReferences:
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Orostaurus compiled by the radiolaria@mikrotax project team viewed: 28-1-2021
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