NAME Fractisporonites doliiformis
AGE Late Paleocene-Early Eocene.   AGE span: 58.7...40.4 mya
K&J CLASSIFICATION (2000) Fungi Imperfecti, Phragmosporae.
FIGURE(S)
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Pl.10fig.1.jpg
FIGURE REFERENCE Kalgutkar RM. 1993. Paleogene fungal palynomorphs from Bonnet Plume Formation, Yukon Territory; Contributions to Canadian Paleontology, Geological Survey of Canada, Bulletin 444, p. 51-105.
SPECIES, AUTHORITY F. doliiformis Kalgutkar 1993, p. 80, pl. 4.3, fig. 2.
LOCATION Peel River, Yukon Territory, Canada.
ORIG DESCRIPTION* Multicellular, fragmented, indeterminate, uniseriate, dark brown fungal spores. Fragments consist of many cells of different lengths, and are easily distinguishable. Central cells are longer and wider than the terminal cells on either side. Each cell is somewhat barrel-shaped with slightly bulged sides. Septa between cells noticeably thick. Cells with smooth to lightly rough wall less than 1 µm thick, indented at the septa, about 15-23 x 10-18 µm in size. Septa 2-3 µm thick, dark band, with central pores. Spore size of the observed specimen 117.5 x 12.5 µm, size range 137-237 x 12-23 µm.
COMMENTS* Differentiated from Alternoseptites Rouse 1962 by cells being indented at each septum and not at alternate septa. This species differs from Fractisporonites canalis Clarke 1965 in being much smaller, in having constricted septa, and in lacking a central internal tube. It is distinguished from F. moniliformis Clarke 1965 in being made up of cells with variable size range. Etymology:

From the Latin, doliiformis, vessel-shaped, referring to the cells being barrel-shaped.
PUBLICATION REFERENCE Kalgutkar RM. 1993. Paleogene fungal palynomorphs from Bonnet Plume Formation, Yukon Territory; Contributions to Canadian Paleontology, Geological Survey of Canada, Bulletin 444, p. 51-105.
K&J REMARKS
TYPE
ALL NAMES (Including synonyms) Fractisporonites doliiformis
SERIAL NUMBER 589
PUBLIC COMMENTS
 *For source, see Publication Reference.