Distinguishing features: Parent taxon (Axopodorhabdaceae): Regular placoliths; central-area, with cross-bars or perforated plate; often with tall, hollow spines. Distal shield elements non-imbricate V-units; proximal shield and inner cycle formed from R-units. Rim often appears beaded in LM This taxon: Elliptical; central area with axial cross and tall spine
Daughter taxa (time control age-window is: 0-800Ma)
Axopodorhabdus albianus 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 cylindratus Axopodorhabdus with axial cross structure bearing a tall, hollow spine. The four holes delineated by the cross bars are often near circular.
Axopodorhabdus dietzmannii 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 rahla Axopodorhabdus with spine that has four protrusions forming a distinctive distal calyx. Seen in side view.
Distinguishing features: Parent taxon (Axopodorhabdaceae): Regular placoliths; central-area, with cross-bars or perforated plate; often with tall, hollow spines. Distal shield elements non-imbricate V-units; proximal shield and inner cycle formed from R-units. Rim often appears beaded in LM This taxon: Elliptical; central area with axial cross and tall spine
Lith size: 4->11µm; 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 Cenomanian Stage (100% up, 93.9Ma, in Cenomanian stage). Data source: Total of ranges of the species in this database First occurrence (base): within Late Pliensbachian Substage (184.20-188.00Ma, base in Pliensbachian stage). Data source: Total of ranges 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
Bown, P. R. & Cooper, M. K. E. (1998). Jurassic. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 34-85. gsO
Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 132-199. gsO
Noël, D. (1965). Sur les Coccolithes du Jurassique Européen et d'Afrique du Nord. Essai de classification des coccolithes fossiles. Éditions du Centre National de la Recherche Scientifique, Paris. 1-209. gs
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): -. gsO
Axopodorhabdus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 11-10-2024
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