Nannotax3 - ntax_mesozoic

Petrarhabdus

Classification: ntax_mesozoic -> Podorhabdales -> Prediscosphaeraceae -> Petrarhabdus
Sister taxa: Petrarhabdus, Prediscosphaera

Distinguishing features: Prediscosphaera with massive, blocky spine covering most of the distal surface.

Daughter taxa (time control age-window is: 0-800Ma)
				Petrarhabdus copulatus Prediscosphaera with massive, four-part, blocky, square spine covering most of the distal surface.
				Petrarhabdus kirenii
				Petrarhabdus vietus A species of Petrarhabdus in which the spine is significantly smaller than the coccolith. In the LM, the image is very highly birefringent. In the SEM, the spine appears to be composed of three stacks of calcite blocks,
				Petrarhabdus sp. Specimens not identified to species level

Taxonomy:

Citation: Petrarhabdus Wind & Wise in Wise, 1983

Rank: Genus

Type species: Petrarhabdus copulatus (Deflandre, 1959) Wind & Wise in Wise, 1983

Farinacci & Howe catalog pages: Petrarhabdus *

Distinguishing features: Prediscosphaera with massive, blocky spine covering most of the distal surface.

Search data:

Tags	LITHS: placolith, circular, elliptical, quadrate, CA: cross-axial, ca_disjunct, process, CROSS-POLARS: V-prominent,
Metrics	Lith size: 7->20µm; Data source notes: size range of included species

The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): at top of Maastrichtian Stage (100% up, 66Ma, in Maastrichtian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Cenomanian Stage (0% up, 100.5Ma, in Cenomanian stage). Data source: Total of range of species in this database

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: Prediscosphaeraceae

References:

Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 132-199. gs V O

Deflandre, G. (1959). Sur les nannofossiles calcaires et leur systématique. Revue de Micropaléontologie. 2: 127-152. gs

Wise, S. W. (1983). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 71 in the Falkland Plateau region, Southwest Atlantic Ocean. Initial Reports of the Deep Sea Drilling Project. 71: 481-550. gs V O

Petrarhabdus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 25-2-2021

Taxon Search:

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10889 Go to Archive.is to create a permanent copy of this page - citation notes

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