NAME Scolecosporites scalaris
AGE Late Paleocene-Early Eocene.   AGE span: 58.7...40.4 mya
K&J CLASSIFICATION (2000) Fungi Imperfecti, Phragmosporae.
FIGURE(S)
Image of
Pl.10fig.9.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 S. scalaris (Kalgutkar) Kalgutkar & Jansonius 2000
LOCATION Peel River, Yukon Territory, Canada.
ORIG DESCRIPTION* Spores filamentous, scalariform, multicellular, typically with some 25 cells arranged in a row; spores brown, straight, slightly tapering toward the base. Cells usually equally spaced with regular transverse septation; broader than long, except those at the tapered end, with prominent triangular or wedge-shaped septal folds and clear perforations. Spore wall thin. Spores much longer than broad, generally with length greater than eight or nine times the width. Spores with a simple pore at one end and a hyaline, small pedicel-like attachment cell at the tapered end. Illustrated spore 137.5 x 12.5 µm.
COMMENTS* Lange & Smith (1971) separated extended linear phragmospores of more than 10 cells, and typically with length greater than four times the breadth, from other linear phragmospores. They included scolecophragmospores of length 15-30 times the breadth with ladder-like septa under the new genus Scolecosporites (type species S. maslinensis). However, it was not clear if they intended to include in it spores with or without pores. The present form appears similar in general appearance to spores included under Scolecosporites, except for their much smaller size and a distinct pore at one end. These spores appear similar to D. aequabilis in being regularly septate, but differ from it in their noticeably large size.

Etymology: From the Latin, scalaris, scalariform, referring to the ladder-like appearance of the spores.
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) Diporicellaesporites scalaris Kalgutkar 1993, p. 76, pl. 4.2, fig. 13.; Scolecosporites scalaris
SERIAL NUMBER 1556
PUBLIC COMMENTS
 *For source, see Publication Reference.