NAME Trichothyrites denticulatus
AGE Late Miocene.   AGE span: 11.608...5.332 mya
K&J CLASSIFICATION (2000) Ascomycetes, Microthyriales.
FIGURE(S)
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FIGURE REFERENCE Ramanujam CGK, Rao KP. 1973. On some microthyriaceous fungi from a Tertiary lignite of south India; The Palaeobotanist, v. 20 (1971), p. 203-209.
SPECIES, AUTHORITY T. denticulatus (Ramanujam & Rao) Kalgutkar & Jansonius 2000
LOCATION Warkalli lignite of Kerala State, India.
ORIG DESCRIPTION* Free mycelium lacking. Ascomata discoid, dimidiate, rounded, margin smooth, rigid; 69-81 µm in diameter. Ostiolate, ostiole centric, 10-15 µm in diameter, elevated on slightly raised border. Ostiole border 3-4-layered, cells dark brown, thick-walled, rounded to flattened, lumina narrow. Marginal cells of ascomata 5-16 x 3.8-6.5 µm, tangential walls thickened. Cells between ostiole border and ascomata periphery squarish to rectangular, with thickened tangential walls; 4-7 conical, teeth-like (denticular) processes protruding into ostiole cavity from inner layer of border. Denticular processes 3-5 µm long, 4-5 µm broad basally, tip blunt or subacute, often slightly reflexed.
COMMENTS* The possession of denticular processes projecting into the ostiole cavity is the diagnostic feature of this species. Notothyrites setifer Cookson 1947a and N. neyveli are characterized by the possession of typical setae that are bristle-like and longer and hence easily distinguishable from the short denticular processes of the present specimens (Cookson, 1947a; Ramanujam, 1963b). Notothyrites padappakarensis (Jain & Gupta, 1970) differs in the possession of papillae confined to the outer marginal cells of the ostiole border. Encountered frequently in the samples of the lignite examined.
PUBLICATION REFERENCE Ramanujam CGK, Rao KP. 1973. On some microthyriaceous fungi from a Tertiary lignite of south India; The Palaeobotanist, v. 20 (1971), p. 203-209.
K&J REMARKS Ramanujam compared this species with Notothyrites neyveli. However, although "N. neyveli" was mentioned by Ramanujam in the abstracts published in the Proceedings of the 50th Indian Congress (1963b), this name was not validly published.

Reddy, Ramanujam & Srisailam 1982, p. 114, proposed the new combination Trichothyrites denticulatus (Cookson), but did not provide the basionym or bibliographic details, and hence did not validly publish this combination.
TYPE
ALL NAMES (Including synonyms) Notothyrites denticulatus Ramanujam & Rao 1973, p. 204, pl. 1, fig. 7. Trichothyrites denticulatus (Ramanujam & Rao) Reddy, Ramanujam & Srisailam 1982 (nom. nud.).; Trichothyrites denticulatus
SERIAL NUMBER 1732
PUBLIC COMMENTS
 *For source, see Publication Reference.