Alterbia asymmetrica

"asymmetrica" (Wilson, 1967a, p.62–63, figs.17–21) Lentin and Williams, 1976, p.48.  Holotype: Wilson, 1967a, figs.19–21.  Combination illegitimate: the generic name Alterbia is illegitimate.  NOW Alterbidinium.  Originally Deflandrea, subsequently Alterbia (combination illegitimate), thirdly Senegalinium?, fourthly (and now) Alterbidinium, fifthly Magallanesium. Age: ?Eocene (erratic).

Parent: Alterbia