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Palaeosclerotium pusillum
Palaeosclerotium pusillum G.W. Rothwell Canad. J. Bot., 50(11): 2354. 7 Dec 1972
- Name
- Palaeosclerotium pusillum
- Rank
- Species
- Generic Name
- [Genus] Palaeosclerotium
- Authors (Pub.)
- Rothwell G. W.
- Publication
- Palaeosclerotium pusillum gen. et sp. nov., a fossil eumycete from the Pennsylvanian of Illinois [1972/12]
- Journal
- Canadian Journal of Botany
- Volume
- 50
- Issue
- 11
- Page number
- 2354
- Year
- 1972
- Fossil Status
- sclerotia
- Stratigraphy
- Moscovian
- Strat. comment
- Herrin (No. 6) Coal, Carbondale Formation, Kewanee Group
- Location
- Sahara Coal Co. No. 6 Mine, Sec. 30, T 9 S, R 4 E, Harrisburg Quadrangle,
Williamson County, Illinois, USA
- Paleoregion
- Laurussia (Laurentia)
Data for Holotypus
- Repository
- Field Museum, Chicago, USA
- Repository Number
- Best preserved specimen in the formerly University of Illinois at Chicago Circle coal ball No. 2405. Slides Nos. 672-680
Data for Paratypus
- Repository
- Field Museum, Chicago, USA
- Repository Number
- Specimens in the formerly University of Illinois at Chicago Circle coal balls No. 2405 (except holotype), Fig. 1; No. 818C bot, Fig. 2; No. 343B, Fig. 6; The University of Alberta coal balls CB230A bot (not figured); No. 230A top
(not figured). Slides of the paratypes are No. 672-697 in the Paleobotanical Collections, Ohio University, Athens, Ohio; and No. 979-1,004 in the Paleobotanical Collection, The University of Alberta, Edmonton
- Diagnosis
- Oval-spherical sclerotium measuring 0.75-1.20 mm in diameter. Hyphae
of medulla much branched and septate, measuring 2-4 um in diameter. Hyphae often exhibit short, bud-like branches. Spherical cavities present in medulla; contain amorphous contents, and measure about 40 um in diameter. Cells of cortex isodiametric or slightly radially elongated,
measuring up to 26 X 14 um. Rind 1-5 cells thick; cells exhibit thickened walls, measure about 10 um in diameter. External hyphae or fruiting structures unknown.
