NAME Helicosporiates pirozynskii
AGE Early Eocene.   AGE span: 55.8...40.4 mya
K&J CLASSIFICATION (2000) Fungi Imperfecti, Helicosporae.
FIGURE(S)
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Pl.15fig.3.jpg
FIGURE REFERENCE Kalgutkar RM, Sigler L. 1995. Some fossil fungal form-taxa from the Maastrichtian and Palaeogene ages; Mycological Research, v. 99, p. 513-522.
SPECIES, AUTHORITY H. pirozynskii Kalgutkar & Sigler 1995, p. 520, fig. 18.
LOCATION Iceberg Bay Formation at Strand Fiord, Axel Heiberg Island, Northwest Territories, Canada.
ORIG DESCRIPTION* Conidia simple, pale brown to brown, smooth, helicoid. Conidial filaments forming the spirals coiled 2-4 times in one plane (figs. 18, 19) or cochleate (fig. 20); filaments slender, multicellular, smooth, about 5 µm wide; septa present, or sometimes indistinct; cells cuboid to rectangular, not indented at the septa. Conidia 30-40 µm diameter.
COMMENTS* Because of its fuscous and loosely to tightly coiled conidia, Helicosporiates pirozynskii appears more closely affiliated to Helicosporium than to Helicomyces. Characteristically, pigmentation appears to be greatest in the outside (peripheral) region of each coil.

Derivation of name: In honor of Dr. Kris A. Pirozynski.
PUBLICATION REFERENCE Kalgutkar RM, Sigler L. 1995. Some fossil fungal form-taxa from the Maastrichtian and Palaeogene ages; Mycological Research, v. 99, p. 513-522.
K&J REMARKS
TYPE
ALL NAMES (Including synonyms) Helicosporiates pirozynskii
SERIAL NUMBER 680
PUBLIC COMMENTS
 *For source, see Publication Reference.