NAME Spirotremesporites Dueñaz-Jimenez 1979.
AGE    AGE span:  mya
K&J CLASSIFICATION (2000) Fungi Imperfecti, Amerosporae.
FIGURE(S)
FIGURE REFERENCE
SPECIES, AUTHORITY Varisulcosporites Rouse & Mustard 1997, p. 208.
Varisulcosporites Mustard & Rouse 1994, p. 143 (nom. nud.).
LOCATION
ORIG DESCRIPTION* ORIGINAL DIAGNOSIS: Unicellate, elliptical to fusiform fungal spores, isopolar, with thickened polar caps consisting of polar walls (pl. 11, figs. 5, 6). Apertures single, in form of an elliptical [oblique] sulcus, or a sulcus plus 2 elongate grooves extending between sulcus and poles.

Monotypic.
COMMENTS*
PUBLICATION REFERENCE Rouse GE, Mustard PS. 1997. Nomenclatural note and corrections; Palynology, v. 21, p. 207-208.
K&J REMARKS Spores of Varisulcosporites eminens, the type species described for this new genus, are characterized by the presence of an oblique furrow or groove. Elsik (1990a) emended Spirotremesporites Dueñas-Jimenez 1979, restricting it to spores with a single oblique furrow. Kalgutkar and Jansonius (2000) consider Varisulcosporites a junior taxonomic synonym of Spirotremesporites, and transfer the type to Spirotremesporites.

The generic name was not validly published in 1994 because it was not specified where the type specimen was stored. In 1997, the authors slightly rephrased the wording of the diagnosis, but the deletion of the word "oblique" may have been unintended [and is here restored in square brackets].
TYPE TYPE: Varisulcosporites eminens Rouse & Mustard 1997, p. 208. Varisulcosporites eminens Mustard & Rouse 1994, p. 143, pl. 11, fig. 6 (nom. nud.); holotype.
ALL NAMES (Including synonyms) Spirotremesporites Dueñaz-Jimenez 1979.;
SERIAL NUMBER 1771
PUBLIC COMMENTS
 *For source, see Publication Reference.