Reticulofenestra circus var. lata

Classification: Coccolithophores -> Isochrysidales -> Noelaerhabdaceae -> Reticulofenestra -> R. umbilicus group -> Reticulofenestra circus var. lata
Sister taxa: R. umbilicus, R. dictyoda, R. hillae, R. hampdenensis, R. hesslandii, R. moorei, R. circus, R. circus var. lata, R. wadeae, R. maceria Shafik 1989, R. oamaruensis,


Citation: Reticulofenestra circus var. lata Maiorano, 2006
Rank: Species

Distinguishing features: Very large (>12 microns), sub-circular Reticulofenestra with a medium-sized central opening with quadrate outline.

Farinacci & Howe catalog pages: R. circus lata *

Search data:
TagsLITHS: placolith, circular, elliptical, CA: ca_conjunct, grill, vacant,
CSPH: equant, monomorphic, CROSS-POLARS: rim-unicyclic, R-prominent,
MetricsLith size: 12->15┬Ám;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Notes: According to Maiorano (2006) it only occurs in a short interval from near top of NP22 to about 1/3 up NP23, whilst R. circus has a longer range.
Last occurrence (top): within NP23 zone (29.62-32.02Ma, top in Rupelian stage). Data source: Maiorano, 2006
First occurrence (base): within NP22 zone (32.02-32.92Ma, base in Rupelian stage). Data source: Maiorano, 2006

Plot of occurrence data:


Maiorano, P. (2006). Reticulofenestra circus var. lata n.var.: a large reticulofenestrid (Coccolithophoridae) from the Early Oligocene. Micropaleontology. 52(1): 81-86. gs


Reticulofenestra circus var. lata compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-9-2020

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