Zeugrhabdotus petrizzoae

Classification: Mesozoic -> Eiffellithales -> Chiastozygaceae -> Zeugrhabdotus -> Zeugrhabdotus petrizzoae
Sister taxa: Z. blowii, Z. burolletii, Z. erectus, Z. fissus, Z. moulladei, Z. noeliae, Z. bicrescenticus, Z. diplogrammus, Z. fluxus, Z. howei, Z. petrizzoae, Z. reticulatus, Z. scutula, Z. biperforatus, Z. burwellensis, Z. kerguelenensis, Z. clarus, Z. acanthus, Z. trivectis, Z. xenotus, Z. angelozziae, Z. cooperi, Z. embergeri, Z. praesigmoides, Z. sigmoides, Z. simplex, Z. streetiae, Z. sp.,

Distinguishing features: Unicyclic, medium; bar divided longitudinally and parts offset , darkest at 45°


Citation: Zeugrhabdotus petrizzoae Bown, 2005
Rank: Species

Farinacci & Howe catalog pages: Zeugrhabdotus petrizzoae *

Distinguishing features: Unicyclic, medium; bar divided longitudinally and parts offset , darkest at 45°

Morphology remarks: Medium-sized unicyclic Zeugrhabdotus with a central area spanned by a broad, disjunct, transverse bar. The bar is usually brighter than the rim in LM XPL and formed from two plain blocks divided by a median suture; the two blocks are offset at each end of the bar.

The blocks making up the bar are brighter and blockier than those of Zeugrhabdotus diplogrammus, and offset at their ends.

Size: Holotype length = 5.3µm

Search data:
TagsLITHS: murolith, CA: process, bar, V-UNITS: V-prominent, DETAILS: ca_disjunct, rim-unicyclic,
MetricsLith size: 4->6µm;
Sources: holotype +/-1µm
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NC8 zone (109.94-112.95Ma, top in Albian stage). Data source: Bown 2005
First occurrence (base): within NC8 zone (109.94-112.95Ma, base in Albian stage). Data source: Bown 2005

Plot of occurrence data:

  • Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
  • Note to users in China - the diagram may not plot unless you use a VPN since I use google services on the website. If this is a problem please contact me 谢谢.
  • Taxon plotted: Zeugrhabdotus petrizzoae, synonyms included - Zeugrhabdotus pettrizoae; Zeugrhabdotus petrizzoae;
  • space-time plot :: Samples map :: Parent: Zeugrhabdotus


    Bown, P. R. (2005). Early to Mid-Cretaceous Calcareous Nannoplankton from the Northwest Pacific Ocean, Leg 198, Shatsky Rise. Proceedings of the Ocean Drilling Program, Scientific Results. 198: 1-82. gs :: view :: open


    Zeugrhabdotus petrizzoae compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 9-7-2020

    Taxon Search:
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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=11338 Go to Archive.is to create a permanent copy of this page - citation notes

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