NAME Palaeomycites cerasiformis
AGE Pliocene to possibly Paleogene.   AGE span: 33.9...2.588 mya
K&J CLASSIFICATION (2000) Chytridiomycetes, Chytridiales; or: Zygomycetes, Endogonales; or: Oomycetes, Peronosporales.
FIGURE(S)
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FIGURE REFERENCE Norris G. 1986. Systematic and stratigraphic palynology of Eocene to Pliocene strata in the Imperial Nuktak C-22 well, Mackenzie Delta Region, District of Mackenzie, N.W.T.; Geological Survey of Canada Bulletin, Bulletin 340, 89 p.
SPECIES, AUTHORITY P. cerasiformis (Norris) Kalgutkar & Jansonius 2000
LOCATION Imperial Nuktak C-22 Well, Mackenzie Delta Region, District of Mackenzie, N.W.T., Canada.
ORIG DESCRIPTION* Fungal spore unicellate, heteropolar, with a levigate cell wall and an irregular ellipsoidal outline, attached to an aseptate filament by a short neck, which may be slightly thickened. Neck 3-6 µm wide, narrowing to and confluent with an aseptate, more or less parallel-sided filament 2-5 µm wide. Cell wall 0.5-2 µm thick, except at the neck which may be thickened up to 3 µm. Filament wall usually slightly thinner than cell wall. Cell wall may be penetrated by irregular pores 1-3 µm wide. Filament up to 100 µm long but usually broken; it may be joined to another filament in a dichotomous fashion. Cell diameter 30-60 µm (holotype 36 µm).
COMMENTS* Distinguished from the type species, Rhizophagites butleri Rosendahl 1943, by the smaller cell diameter and narrower filaments, and from R. acinus Srivastava 1968 by the thinner, single-layered cell wall and smaller cell diameter.
PUBLICATION REFERENCE Norris G. 1986. Systematic and stratigraphic palynology of Eocene to Pliocene strata in the Imperial Nuktak C-22 well, Mackenzie Delta Region, District of Mackenzie, N.W.T.; Geological Survey of Canada Bulletin, Bulletin 340, 89 p.
K&J REMARKS The cell of the type appears to have a two-layered wall, the inner layer of which shows a faint incipient connection across the area where the vesicle and hypha merge. Figures 24-25 in Norris (l.c.) show a folding of the vesicle wall at this merging point, making it difficult to see whether or not there is a closure of the vesicle, or whether they remain in open connection with the filament.
TYPE
ALL NAMES (Including synonyms) Rhizophagites cerasiformis Norris 1986, p. 20, pl. 1, fig. 27.; Palaeomycites cerasiformis
SERIAL NUMBER 1211
PUBLIC COMMENTS
 *For source, see Publication Reference.