Difference between revisions of "Cleistosphaeridium polytrichum"

Latest revision as of 00:05, 1 September 2015

"polytrichum" (Valensi, 1947, p.818, text-fig.4) Davey et al., 1969, p.16.  Holotype: Valensi, 1947, text-fig.4; Fauconnier and Masure, 2004, pl.24, figs.1-6.  NOW Downiesphaeridium.  Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly Cleistosphaeridium, fourthly Impletosphaeridium, fifthly (and now) Downiesphaeridium.  Taxonomic junior synonym: Cleistosphaeridium (as Downiesphaeridium) polyacanthum, according to Masure in Fauconnier and Masure (2004, p.196).  This combination was not validly published in Davey et al. (1966, p.170), since these authors did not fully reference the basionym.  Age: Late Bathonian.