Daughter taxa (time control age-window is: 0-800Ma) | Granddaughter taxa |
| | | | Anfractus variabilis
Very small holococcolith with distal surface pierced by 8-10 pores.
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 | | | | Arkhangelskiella confusa
Small to medium sized with a <1.5µm thick rim
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| | | | Arkhangelskiella paucipunctata
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| | | | Calyculus noeliae subsp. depressa
Calyculus noeliae with low rim.
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| | | | Calyculus noeliae subsp. noeliae
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| | | | Calyculus noeliae subsp. recondita
Calyculus noeliae with tall rim.
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| | | | Centosphaera
Keeled sphere, constructed from hour glass-shaped crystallites.
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| | | | Centosphaera barbata
Keeled sphere, constructed from hour glass-shaped crystallites.
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| | | | Crepidolithus ocellatus
Large blocky Crepidolithus ; rim broad; central opening with robust transverse bar and spine-base. Unicyclic in xpl.
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| | | | Crucirhabdus prinsii
Additional lateral bars in central area
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| | | | Cyclagelosphaera deflandrei (morphotype A)
central area narrow circular to subelliptical; birefringence moderate (typically yellow)
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| | | | Cyclagelosphaera deflandrei (morphotype B)
central area wide and elliptical; birefringence high (typically yellow to red)
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| | | | Cylindralithus asymmetricus
Elliptical; central area with asymmetric crossbars
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| | | | Hexalithus geometricus
Elements with indented edges.
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| | | | Marthasterites bramlettei
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| | | | Nannoconus erbae
Cylindrical to barrel-shaped with moderately broad canal (similar to its wall thickness).
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| | | | Obliquipithonella
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 |  | | | Obliquipithonella prasina
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| | | | Obliquipithonella rhombica
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| | | | Orthopithonella
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 |  | | | Orthopithonella geometrica
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 |  | | | Orthopithonella misurinae
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| | | | Perissocyclus fletcheri
Small Perissocyclus; plate with two cycles of holes around large spine
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| | | | Petrobrasiella bownii
Simialr to P. venata but with distinct base and lacking central core.
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| | | | Prinsiosphaera geometrica
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| | | | Prinsiosphaera triassica subsp. punctata
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| | | | Prinsiosphaera triassica subsp. triassica
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| | | | Proculithus charlotteii
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| | | | Proculithus fistulatus
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| | | | Semihololithus pseudobiskayae
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 |  | | | Similiscutum gephyrion
Medium sized biscutacean with wide shields and very narrow central area spanned by a transverse-bar-like structure. Unicyclic or weakly bicyclic image in XPL with clearly visible elements.
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| | | | Staurolithites acutiferrus
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 | | | | Stephanolithion laffittei
Sub-circular Stephanolithion with central cross and short rim spines
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 |  |  | | Thoracosphaera
Spherical calcisphere with wall formed of crystallites with c-axes parallel to wall but otherwise randomly oriented
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 |  |  |  | Thoracosphaera wombatensis
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| | | | Zeugrhabdotus sisyphus
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| | | | Watznaueria communis
Watznaueria with narrow central-area spanned by a slightly oblique transverse bar.
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| | | | Lotharingius primigenius
Small Lotharingius-like coccolith but lacking V-units and with irregularly formed shield elements
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| | | | Crepidolithus crucifer
Crepidolithus with moderately broad rim; central area with axial cross
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 | | | | Truncatoscaphus senarius
Relatively broad, angular, Truncatoscaphus with central area spanned by a longitudinal bar and 4 diagonal lateral bars, delimiting 6 holes.
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| | | | Zeugrhabdotus elegans
Typical small to medium Zeugrhabdotus - used as default identification by many workers - a modern name would be Z. howei
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| | | | Stradnerlithus cotortuosus
Gracile, elliptical Stradnerlithus with central area spanned by a 6 bars (4 diagonal and 2 longitudinal).
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| | | | N. funiculus group
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| | | | Lotharingius imprimus
Lotharingius with narrow rim and wide, vacant, central area, inner tube cycle (V-units) only partially developed
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| | | | Stradnerlithus humilis
Minute (ca 1.8µm), narrowly elliptical Stradnerlithus with central area spanned by a longitudinal bar and ~12 lateral bars (delimiting 12 holes).
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