Neosciadiocapsinae

Reticulotubulus tintinnabulum, from Dumitrica & Zügel (2003).

Belongs within: Acropyramidoidea.

The Neosciadiocapsinae are a group of radiolarians with a helmet-shaped test known from the Cretaceous to the Eocene (Afanasieva et al. 2005).

Characters (from Afanasieva et al. 2005): Initial spicule with spines A, V, D, 2L, and 2l. Cephalis of type 2, usually with ventral tube and with horizontal or subhorizontal arc, subdividing its cavity into two parts. Test helmet-shaped with two or more segments. Last segment completely closed by velum.

<==Neosciadiocapsinae [Neosciadiocapsidae]AA05
    |--Neosciadiocapsa Pessagno 1969AA05
    |--Coniforma Pessagno 1969AA05
    |--‘Ewingella’ Pessagno 1969 non Vail & Augustson 1943AA05
    |--Ewingium Pessagno 1969AA05
    |--Lipmanium Pessagno 1969AA05
    |--Microsciadiocapsa Pessagno 1969AA05
    |--Sciadiocapsa Squinabol 1904AA05
    |--Scyphiforma Pessagno 1969AA05
    |--Petasiforma Pessagno 1969AA05
    |    `--P. glaskockensis Pessagno 1969DZ03
    `--Reticulotubulus Takemura 1986DZ03
         |--*R. foremanae Takemura 1986DZ03
         `--R. tintinnabulum Dumitrica & Zügel 2003DZ03

*Type species of generic name indicated

References

[AA05] Afanasieva, M. S., E. O. Amon, Y. V. Agarkov & D. S. Boltovskoy. 2005. Radiolarians in the geological record. Paleontological Journal 39 (Suppl. 3): S135–S392.

[DZ03] Dumitrica, P., & P. Zügel. 2003. Lower Tithonian mono- and dicyrtid Nassellaria (Radiolaria) from the Solnhofen area (southern Germany). Geodiversitas 25 (1): 5–72.

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