Alterbia asymmetrica
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"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 Magallanesium. Originally Deflandrea, subsequently Alterbia (combination illegitimate), thirdly Senegalinium?, fourthly (and now) Magallanesium. Age: ?Eocene (erratic).
Parent: Alterbia
