NAME Monoporisporites singularis
AGE Middle Eocene.   AGE span: 48.6...37.2 mya
K&J CLASSIFICATION (2000) Fungi Imperfecti, Amerosporae.
FIGURE(S)
Image of
Pl.3fig.3.jpg
FIGURE REFERENCE Sheffy MV, Dilcher DL. 1971. Morphology and taxonomy of fungal spores; Palaeontographica, Abt. B, v. 133 p. 34-51.
SPECIES, AUTHORITY M. singularis Sheffy & Dilcher 1971, p. 40, pl. 15, fig. 22.
LOCATION Puryear clay pit, one-half mile south of Puryear, Henry County, Tennessee, USA.
ORIG DESCRIPTION* Spherical spore 14.5 µm in diameter, unicellular, psilate with dark pigment. Single asymmetrical pore with annulus; wall three layered, 1.5 µm thick.
COMMENTS* This spore is similar to Monoporisporites grandis van der Hammen 1954 having psilate wall, dark color and a large pore with annulus. However the size, the completely spherical shape and triple-layered wall warrant a distinct name. The specific name, singularis, refers to these unusual characteristics.
PUBLICATION REFERENCE Sheffy MV, Dilcher DL. 1971. Morphology and taxonomy of fungal spores; Palaeontographica, Abt. B, v. 133 p. 34-51.
K&J REMARKS The authors" drawing of the type shows only 2 wall layers; spore essentially opaque, so no internal detail shows up in the photograph.
TYPE
ALL NAMES (Including synonyms) Monoporisporites singularis
SERIAL NUMBER 1008
PUBLIC COMMENTS
 *For source, see Publication Reference.