NAME Spirotremesporites yeguaensis
AGE Late-Middle Eocene.   AGE span: 48.6...33.9 mya
K&J CLASSIFICATION (2000) Fungi Imperfecti, Amerosporae.
FIGURE(S)
Image of
Pl.4fig.52.jpg
FIGURE REFERENCE 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.
SPECIES, AUTHORITY S. yeguaensis Elsik 1990a, p. 165, pl. 1, fig. 30.
LOCATION Yegua Formation of the Claiborne Group, central Texas, USA.
ORIG DESCRIPTION* Aseptate, psilate fungal spores with a single, relatively short, straight furrow that is oblique to the axis of the spore. The outline of the spore is fusiform; the ends are sharply rounded to subpointed. The outline suggests a bilateral symmetry in side view, i.e. the outline is more convex on the side with the furrow. The overall size is 14 x 32 µm. The spore wall is rigid, ca. 0.5 µm or slightly thicker. The furrow is ca. 12 µm long.
COMMENTS* Spirotremesporites yeguaensis is more distinctly fusiform in outline, whereas S. obliquus is more robust, more nearly elliptical in outline. Derivation: Named for the rock strata in which it occurs.
PUBLICATION REFERENCE 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 yeguaensis
SERIAL NUMBER 1600
PUBLIC COMMENTS
 *For source, see Publication Reference.