NAME Paleoslimacomyces minutus
AGE Late Paleocene.   AGE span: 58.7...55.8 mya
K&J CLASSIFICATION (2000) Fungi Imperfecti, Helicosporae.
FIGURE(S)
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FIGURE REFERENCE Mustard PS, Rouse GE. 1994. Stratigraphy and evolution of Tertiary Georgia Basin and subjacent Upper Cretaceous sedimentary rocks, southwestern British Columbia and northwestern Washington State; Geological Survey of Canada, Bulletin 481, p. 97-169.
SPECIES, AUTHORITY P. minutus (Rouse & Mustard) Kalgutkar & Jansonius 2000
LOCATION Strait of Georgia, eastern Vancouver Island, the Fraser River lowlands of southwest British Columbia, Canada, and the northwestern Washington State, USA.
ORIG DESCRIPTION* Planispiral fungal spores, with few (usually 4) cells encircling a fusiform open area in the centre; outer walls about 0.25 µm thick and levigate; inner walls of cells about 1.0-1.5 µm; septa about 0.75 µm thick, with a single faint pore. Dimensions: range 16-21 µm.
COMMENTS* This spore is smaller than the type species Involutisporonites foraminus, with fewer and nonlobate cells. It is usually found on fragments of leaf, and hence is likely the spore of an epiphytic fungus.
PUBLICATION REFERENCE Mustard PS, Rouse GE. 1994. Stratigraphy and evolution of Tertiary Georgia Basin and subjacent Upper Cretaceous sedimentary rocks, southwestern British Columbia and northwestern Washington State; Geological Survey of Canada, Bulletin 481, p. 97-169.
K&J REMARKS Kalgutkar & Sigler (1995) introduced and described Paleoslimacomyces to include fossil spores resembling the conidia of modern Helicoma Corda, Helicomina Olive, Slimacomyces Minter and Trochophora Moore, which all consist of short hemicircinate filaments made up of 4-5 cells and having middle cells more pigmented than the terminal ones. Spores of Paleoslimacomyces minutus appear similar to spores of P. canadensis, and the latter may be a senior taxonomic synonym.
TYPE
ALL NAMES (Including synonyms) Involutisporonites minutus Rouse & Mustard 1997, p. 207. Involutisporonites minutus Mustard & Rouse 1994, p. 141, pl. 4, fig. 6 (nom. nud.).; Paleoslimacomyces minutus
SERIAL NUMBER 1240
PUBLIC COMMENTS
 *For source, see Publication Reference.