NAME Spirotremesporites multiplex
AGE Pleistocene.   AGE span: 2.588...0.0117 mya
K&J CLASSIFICATION (2000) Fungi Imperfecti, Amerosporae.
FIGURE(S)
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Pl.4fig.56.jpg
FIGURE REFERENCE Dueñas-Jimenez H. 1979. Estudio palinologico de los 35 mts. superiores de la seccion Tarragona, Sabana de Bogata; Caldasia, v. 12, p. 539-571.
SPECIES, AUTHORITY S. multiplex Dueñas-Jimenez 1979, p. 564, pl. 3, fig. 6.
LOCATION Sabana de Bogota, Colombia.
ORIG DESCRIPTION* Spores unicellular, ellipsoidal-elongate, with several furrows, generally 4, that extend in a spiral fashion and parallel to each other, from pole to pole; surface smooth-scabrate. Thickness of wall 1 µm. Size 37 x 15 µm (holotype); range in size 28-40 x 10-19 µm.

EMENDED DESCRIPTION (Elsik 1990a, p. 163): Aseptate, psilate(?) fungal spores. The furrow extends from one end of the spore to the other, in a reflexed spiral around the axis of the spore; the furrow appears to traverse the least convex surface of the spore four times, but at a very steep angle, ca. 20-30 degrees to the axis. The spore outline is elliptical to narrowly elliptical; in side view the spore outline is somewhat reniform. Overall size is 10-19 x 28-40 µm. The spore wall is ca. 1 µm thick.
COMMENTS* (Elsik): Differentiated from all other species of Spirotremesporites on the reflexed nature of the furrow as it spirals around the spore axis. The affinity of this species is contingent upon the interpretation of the morphology. If it is multicostate, it is not Xylariaceae.
PUBLICATION REFERENCE Dueñas-Jimenez H. 1979. Estudio palinologico de los 35 mts. superiores de la seccion Tarragona, Sabana de Bogata; Caldasia, v. 12, p. 539-571.

Elsik WC. 1990. Hypoxylonites and Spirotremesporites, form genera for Eocene to Pleistocene fungal spores bearing a single furrow; Palaeontographica, Abt. B, v. 216, p.137-169.
K&J REMARKS
TYPE
ALL NAMES (Including synonyms) Spirotremesporites multiplex
SERIAL NUMBER 1593
PUBLIC COMMENTS
 *For source, see Publication Reference.