NAME Paleoslimacomyces
AGE    AGE span:  mya
K&J CLASSIFICATION (2000) Fungi Imperfecti, Helicosporae.
FIGURE(S)
FIGURE REFERENCE
SPECIES, AUTHORITY Paleoslimacomyces Kalgutkar & Sigler 1995, p. 521.
LOCATION
ORIG DESCRIPTION* ORIGINAL DIAGNOSIS: Conidia simple, solitary, helicoid, curved to hemi-circinate, brown to fuscous, smooth. Conidia 2-3 septate; septa dark, often thick; conidial filaments short, made up of 3-4 broadly curved cells; cells, except the apical cell, darkly-pigmented; apical cell hyaline to pale brown.

Monotypic.
COMMENTS* Conidia of Paleoslimacomyces show some morphological similarity to the conidia of extant Slimacomyces monospora (W.B. Kendr.) Minter, which was originally described by Kendrick (1958) in Helicoma Corda. In a revision of Helicoma, Ellis (1976) transferred it to Troposporella P. Karst. as T. monospora (W.B. Kendr.) M.B. Ellis. After re-examining type material, Minter (1986) concluded that the fungus was different from Troposporella in its dispersal mechanism, and in having two types of cells in a filament for performing different functions. One type, having thick-walled cells with thick septa, had a survival function, whereas the second type, having cells with thinner walls with ordinary septa, germinated quickly. He, therefore, placed this fungus in a new genus Slimacomyces with S. monospora as type. Goos (1987) concurred that the biology and morphology of S. monospora justify its placement in a different genus. Paleoslimacomyces conidia are distinguished from spores of all fossil helicosporous genera by their distinctively short, and curved to partially circinate, filaments.
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 TYPE: Paleoslimacomyces canadensis Kalgutkar & Sigler 1995, p. 521, fig. 21.
ALL NAMES (Including synonyms) Paleoslimacomyces;
SERIAL NUMBER 1238
PUBLIC COMMENTS
 *For source, see Publication Reference.