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Oligosphaeridium dictyophorum
Oligosphaeridium dictyophorum (Cookson and Eisenack, 1958) Davey and Williams, 1969
Now Stiphrosphaeridium. Originally Hystrzchosphaeridium, subsequently Baltisphaeridium, thirdly Oligosphaeridium, fourthly (and now) Stiphrosphaeridium.
The questionable assignment of this species to Oligosphaeridium by Davey and Williams, 1966, was not validly published, since these authors did not fully reference the basionym.
Holotype: Cookson and Eisenack, 1958, pl.11, fig.14
Locus typicus: Omati, Papua, New Guinea
Stratum typicum: Late Jurassic
Original description: Cookson and Eisenack, 1958, p. 44: Hystrichosphaeridium dictyophorum
Shell sphaeroidal, provided with 10-15 appendages which have rather short, appearantly solid stems, and abruply delimited, widely expanded and open meshed terminal expansions with smooth, continuous edge.
Dimensions: Holotype: diameter of shell 71 µm, overall diameter 140 µm; appendages 42-47 µm.
Now Stiphrosphaeridium. Originally Hystrzchosphaeridium, subsequently Baltisphaeridium, thirdly Oligosphaeridium, fourthly (and now) Stiphrosphaeridium.
The questionable assignment of this species to Oligosphaeridium by Davey and Williams, 1966, was not validly published, since these authors did not fully reference the basionym.
Holotype: Cookson and Eisenack, 1958, pl.11, fig.14
Locus typicus: Omati, Papua, New Guinea
Stratum typicum: Late Jurassic
Original description: Cookson and Eisenack, 1958, p. 44: Hystrichosphaeridium dictyophorum
Shell sphaeroidal, provided with 10-15 appendages which have rather short, appearantly solid stems, and abruply delimited, widely expanded and open meshed terminal expansions with smooth, continuous edge.
Dimensions: Holotype: diameter of shell 71 µm, overall diameter 140 µm; appendages 42-47 µm.