NAME Callimothallus Dilcher 1965.
AGE    AGE span:  mya
K&J CLASSIFICATION (2000) Ascomycetes, Microthyriales.
FIGURE(S)
FIGURE REFERENCE
SPECIES, AUTHORITY Siwalikiathyrites Saxena & Singh 1982, p. 294.
LOCATION
ORIG DESCRIPTION* ORIGINAL DIAGNOSIS: Ascostromata subcircular to circular, dimidiate, non-ostiolate, no free hyphae, arrangement of hyphae not radial, divided into cells, central cells polygonal, outer cells mostly elongate. Pores absent.

Monotypic.
COMMENTS* The present genus closely compares to Phragmothyrites Edwards 1922, emend. Kar & Saxena 1976, in being circular and non-ostiolate and in having no free hyphae, but can be separated from the latter by the non-radial arrangement of aporate cells. Moreover, the present genus contains polygonal central cells while those are somewhat squarish-rectangular in Phragmothyrites (Kar & Saxena, 1976, p. 8-9). Notothyrites Cookson 1947a differs in being ostiolate. Kutchiathyrites Kar 1979 differs in being fish-scale like in shape.
PUBLICATION REFERENCE Saxena RK, Singh HP. 1982. Palynological investigation of the Upper Siwalik sediments exposed along Hoshiarpur-Una Road Section in Punjab and Himac; Geophytology, v. 12, p. 287-306.
K&J REMARKS The non-radial and aporate nature of the genus is not clear in the holotype illustration (pl. 2, fig. 25) of Siwalikiathyrites ramanujamii. The specimen has radial structure in the peripheral region, and some cells in the central region seem porate. Kutchiathyrites is not a microthyriaceous fructification (see remarks from Kalgutkar and Jansonius (2000) under this genus).

Kalgutkar and Jansonius (2000) transfer the type of the genus to Callimothallus Dilcher 1965.
TYPE TYPE: Siwalikiathyrites ramanujamii Saxena & Singh 1983, p. 294, pl. 2, fig. 25.
ALL NAMES (Including synonyms) Callimothallus Dilcher 1965.;
SERIAL NUMBER 1563
PUBLIC COMMENTS
 *For source, see Publication Reference.