NAME Spirotremesporites obliquus
AGE Late Eocene.   AGE span: 40.4...33.9 mya
K&J CLASSIFICATION (2000) Fungi Imperfecti, Amerosporae.
FIGURE(S)
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Pl.4fig.51.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. obliquus Elsik 1990a, p. 164, pl. 1, fig. 33.
LOCATION The Green River section, Washington, USA.
ORIG DESCRIPTION* Aseptate, psilate fungal spores with a single, relatively short, straight furrow that is oblique to the axis of the spore. Basic outline of the spore is elliptical with fusiform ends; ends are subrounded to subpointed. The outline suggests a bilateral symmetry in side view, i.e. reniform shape. The overall size is 16-20 x 3542 µm. The spore wall is rigid, ca. 0.5-1.0 µm. The spore wall can be slightly thickened at the ends of the spore. The furrow is 10-12 µm long.
COMMENTS* Spirotremesporites obliquus is larger and has a shorter furrow than Spirotremesporites clinatus. The spore wall in S. obliquus occasionally is slightly thickened over the ends of the spore.
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 obliquus
SERIAL NUMBER 1595
PUBLIC COMMENTS
 *For source, see Publication Reference.