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Cleistosphaeridium echinoides

"Cleistosphaeridium echinoides" (Maier, 1959, p.318-319, pl.32, figs.5-6) Davey et al., 1969, p.15.

TYPE: Holotype: Maier, 1959, pl.32, fig.6.

HISTORY: Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly Cleistosphaeridium.

SYNONYM(S): Taxonomic senior synonym: Xanthidium (as Spiniferites) ramosum, according to Sarjeant (1983, p.91-92).

COMMENTS: This combination was not validly published in Davey et al. (1966, p.170), since these authors did not fully reference the basionym.

AGE: mid-Oligocene-Mid Miocene.


Infraspecific taxa:


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