Hystrichosphaeridium xanthiopyxides
"?xanthiopyxides" Wetzel, 1933b, p.44-45; pl.4, fig.25 ex Deflandre, 1937b, p.77. Emendations: Morgenroth, 1968, p.556, as Hystrichosphaeridium? xanthiopyxides; Sarjeant, 1985b, p.142-144, as Tanyosphaeridium xanthiopyxides. Holotype: Wetzel, 1933b, pl.4, fig.25, Morgenroth, 1968, pl.48, fig.5; Sarjeant, 1985b, pl.3, figs.2-3; Dietz et al., 1999, fig.10, no.8. NOW Tanyosphaeridium. Originally Hystrichosphaera (name not validly published), subsequently Hystrichosphaeridium, thirdly Hystrichosphaeridium?, fourthly Baltisphaeridium (Appendix A), fifthly Prolixosphaeridium?, sixthly (and now) Tanyosphaeridium. Taxonomic junior synonym: Hystrichosphaeridium (as Tanyosphaeridium) magdalium, according to Stover and Evitt (1978, p.85). Questionable assignment: Morgenroth (1968, p.556). This name was not validly published in Wetzel (1933b) since the generic name Hystrichosphaera was not validly published until 1937. Age: Late Cretaceous (?Maastrichtian, according to Sarjeant, 1985b, p.143).
Parent: Hystrichosphaeridium
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