NAME Microthyriacites grandis
AGE Oligocene-Miocene.   AGE span: 33.9...5.332 mya
K&J CLASSIFICATION (2000) Ascomycetes, Microthyriales.
FIGURE(S)
Image of
Pl.21fig.18.jpg
FIGURE REFERENCE Cookson IC. 1947. Fossil fungi from Tertiary deposits in the southern hemisphere. Part I; Proceedings of the Linnean Society of New South Wales, v. 72, p. 207-214.
SPECIES, AUTHORITY M. grandis Cookson 1947a, p. 211, pl. 14, fig. 20.
LOCATION Australia, New Zealand and the Kerguelen Archipelago.
ORIG DESCRIPTION* Ascoma large, round, flattened, astomate, 280 μm in diameter, composed of stout, thick-walled, completely united hyphae that radiate from a central group of hexagonal cells. Cells 6.6-10 μm thick.
COMMENTS* My object in describing this single imperfectly preserved specimen is to provide evidence of the occurrence of the Microthyriaceae in New Zealand during the Tertiary Period. It is to be hoped that additional specimens will give the information regarding the margin necessary to complete the specific description.

The specimen from Traralgon, Victoria, illustrated in pl. 14, fig. 21, although considerably smaller (186 µm in diameter), is compared with M. grandis on account of its similar construction. Unlike the type specimen, the margin which is thick and non-fimbriate is preserved.
PUBLICATION REFERENCE Cookson IC. 1947. Fossil fungi from Tertiary deposits in the southern hemisphere. Part I; Proceedings of the Linnean Society of New South Wales, v. 72, p. 207-214.
K&J REMARKS
TYPE
ALL NAMES (Including synonyms) Microthyriacites grandis
SERIAL NUMBER 935
PUBLIC COMMENTS
 *For source, see Publication Reference.