Cleistosphaeridium deflandrei

"deflandrei" Courtinat, 1989, p.166, pl.12, fig.5; pl.13, fig.12.  Holotype: Deflandre, 1939a, pl.10, fig.9; Deflandre, 1947c, fig.1, no.5.  Name illegitimate - nomenclatural senior synonym: Hystrichosphaeridium (now Impletosphaeridium) ehrenbergii, which has the same type.  Courtinat (1989, p.166) erected the species Cleistosphaeridium deflandrei and designated as holotype the specimen illustrated in Deflandre (1939a, pl.10, fig.9) and Deflandre (1947c, fig.1, no.5).  This is the only specimen of Hystrichosphaeridium ehrenbergii illustrated by Deflandre (1947c) when he erected that species, and which thus must be considered its holotype.  Courtinat (1989, p.166) considered Hystrichosphaeridium ehrenbergii to be not validly published, since Deflandre (1947c) did not give a diagnosis or designate a holotype.  According to the I.C.B.N. (Article 37.1), designation of a holotype was not required before 1958.  Also, according to the I.C.B.N. (Article 32.4), "For the purpose of valid publication of a name, reference to a previously and effectively published description or diagnosis may be direct or indirect ...." Deflandre (1947c, fig.1, no.5) referred to "H. cf. hirsutum (Ehr.) Defl. 1938", this reference including a description by Deflandre (1939a, p.191).  Hence, Hystrichosphaeridium ehrenbergii must be regarded as having been validly published by Deflandre (1947c); consequently Cleistosphaeridium deflandrei is an illegitimate name.  Age: Jurassic.

Parent: Cleistosphaeridium