Pharus


Classification: Mesozoic -> Holococcoliths -> Rarer genera -> Pharus
Sister taxa: Bifidalithus, Bilapillus, Multipartis, Munarinus, Octolithus, Okkolithus, Ottavianus, Pharus, Ramsaya, Russellia, Saepiovirgata, Acuturris, Anfractus, Duocameratus, Lacunolithus-Bown, Metadoga, Nicholasia, Paulpearsonia, Petrobrasiella, Pseudoconus, Semihololithus, Stereorhabdus, Tanzanella, Thecatus, unidentified holococcoliths,

Distinguishing features: Elliptical coccolith formed of a single block, with two perforations


Daughter taxa: (blue => in age window 0-300Ma)

Specimens not identified to species level

Taxonomy:

Citation: Pharus Wind & Wise in Wise & Wind, 1977
Rank: Genus
Type species: Pharus simulacrum Wind & Wise in Wise & Wind, 1977

Farinacci & Howe catalog pages: Pharus *

Distinguishing features: Elliptical coccolith formed of a single block, with two perforations


Morphology remarks: Described as being formed of one or two blocks by Wise & Wind (1977) but the whole coccolith is clearly formed of mass of crystallites with very similar orientation - similar to modern Helicosphaera holococcoliths

Geological Range:
Last occurrence (top): within Maastrichtian Stage (66.04-72.05Ma, top in Maastrichtian stage). Data source: Total of range of species in this database
First occurrence (base): within Maastrichtian Stage (66.04-72.05Ma, base in Maastrichtian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Wise, S.W. & Wind, F.H., (1977). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 36 drilling on the Falkland Plateau, south-west Atlantic sector of the Southern Ocean. Initial Reports of the Deep Sea Drilling Project, 36(269-491).


nannotaxlogo400px

Pharus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 17-10-2018

Taxon Search:
Advanced Search
Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10898Go to Archive.is to create a permanent copy of this page - citation notes



Comments (0)

No comments yet. Be the first!

Add Comment

* Required information
1000
Captcha Image
Powered by Commentics