Difference between revisions of "Cleistosphaeridium deflandrei"

Revision as of 15:40, 4 December 2016

"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.  I.C.N. Article 40.1 implies that designation of a holotype was not required before 1958.  Also, according to I.C.N. Article 38.1), "In order to be validly published, a name of a new taxon ... must ... be accompanied by a description or diagnosis ... or ... by a reference to a previously and effectively published description or diagnosis ...".  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.