Axopodorhabdus


Classification: Mesozoic -> Podorhabdales -> Axopodorhabdaceae -> Axopodorhabdus
Sister taxa: Axopodorhabdus, Cribrocorona, Cribrosphaerella, Dodekapodorhabdus, Ethmorhabdus, Hemipodorhabdus, Hexapodorhabdus, Nephrolithus, Octocyclus, Octopodorhabdus, Perissocyclus, Podorhabdus, Psyktosphaera, Teichorhabdus, Tetrapodorhabdus,

Short diagnosis: Elliptical; central area with axial cross and tall spine


Daughter taxa (blue => in age window 0-300Ma)
Axopodorhabdus with 3-tiered shield and axial cross bars that flare where they join the rim. Highly diagnostic XPL image comprising birefringent cross bars with median extinction lines that darken at 45 degrees.
Axopodorhabdus with narrow rim and narrow axial cross bars.
Axopodorhabdus with axial cross structure bearing a tall, hollow spine. The four holes delineated by the cross bars are often near circular.
Axopodorhabdus with elongated, slightly flattened, elliptical outline (oblong shaped) with axial cross structure bearing a tall, hollow spine. Cross bars without medial extinction line in xpl.
Axopodorhabdus with spine that has four protrusions forming a distinctive distal calyx. Seen in side view.
Specimens not identified to species level

Taxonomy:

Citation: Axopodorhabdus Wind & Wise in Wise & Wind, 1977
Rank: Genus
Type species: Axopodorhabdus cylindratus (Noël, 1965) Wind and Wise in Wise and Wind, 1977

Farinacci & Howe catalog pages: Axopodorhabdus *

Short diagnosis: Elliptical; central area with axial cross and tall spine

Geological Range:
Last occurrence (top): within Cenomanian Stage (93.90-100.50Ma, top in Cenomanian stage). Data source: Total of range of species in this database
First occurrence (base): within Pliensbachian Stage (182.70-190.82Ma, base in Pliensbachian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Bown, P.R. & Cooper, M.K.E., (1998). Jurassic. In: Bown, P.R. (Editor), Calcareous nannofossil biostratigraphy. British Micropalaeontological Society Publication Series. Chapman & Hall, pp. 34-85.

Burnett, J.A., (1998). Upper Cretaceous. In: Bown, P.R. (Editor), Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publications Series. Chapman & Hall, London, pp. 132-199.

Noël, D., (1965). Sur les Coccolithes du Jurassique Européen et d'Afrique du Nord. Éditions du Centre National de la Recherche Scientifique, Paris.

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).


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Axopodorhabdus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-1-2018

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