HOME  Hierarchy  Table  Index  References

Downiesphaeridium iaculigerum

Downiesphaeridium iaculigerum (Klement, 1960, p.57-58, pl.7, fig.10) Williams et al., 1998, p. 203.

EMENDATION: Sarjeant, 1984a, p.171, as Operculodinium? iaculigerum.

TYPE: Holotype: Klement, 1960, pl.7, fig.10; Sarjeant, 1984a, pl.2, fig.5; text-fig.7; Brenner, 1988, pl.14, fig.7.

HISTORY: Originally Baltisphaeridium (Appendix A), subsequently Operculodinium?, thirdly Cleistosphaeridium, fourthly and now) Downiesphaeridium.

SYNONYM(S): Taxonomic junior synonym: Cleistosphaeridium? polyacanthum, according to Brenner (1988, p.42) - however, Islam (1993, p.84) retained Cleistosphaeridium? (as and now Downiesphaeridium) polyacanthum.

AGE: mid Kimmeridgian.


Infraspecific taxa:


Go up one level.
DINOFLAJ (c) 1998