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Coronifera striolata
Coronifera striolata (Deflandre, 1937) Stover and Evitt, 1978
Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly Exochosphaeridium, fourthly (and now) Coronifera.
Tax. synonym of Operculodinium hirsutum (Ehrenberg, 1838) Lentin and Williams, 1973, according to Sarjeant, 1984, which, as noted by that author, is not a validly published species name.
Holotype: Deflandre 1937, pl.15 [al. pl.12], fig.1
Locus typicus: Paris Basin, France
Stratum typicum: Late Cretaceous
Supplemental diagnosis: Davey, 1969, p. 164: Exochosphaeridium striolatum
Shell subspherical to ovoidal. Processes numerous, variable, fibrous, often bifurcate medially and sometimes terminating witll small fork. Proccsses distally may be pointed or blunted. Fibres pass down length of processes onto shell surface and there join with similar fibres from adjacent processes. Apical process and precingular archaeopyle may be present.
Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly Exochosphaeridium, fourthly (and now) Coronifera.
Tax. synonym of Operculodinium hirsutum (Ehrenberg, 1838) Lentin and Williams, 1973, according to Sarjeant, 1984, which, as noted by that author, is not a validly published species name.
Holotype: Deflandre 1937, pl.15 [al. pl.12], fig.1
Locus typicus: Paris Basin, France
Stratum typicum: Late Cretaceous
Supplemental diagnosis: Davey, 1969, p. 164: Exochosphaeridium striolatum
Shell subspherical to ovoidal. Processes numerous, variable, fibrous, often bifurcate medially and sometimes terminating witll small fork. Proccsses distally may be pointed or blunted. Fibres pass down length of processes onto shell surface and there join with similar fibres from adjacent processes. Apical process and precingular archaeopyle may be present.