Fungalpedia – Note 178Koshalia (Fossil Fungi)


Koshalia S. Sarkar & V. Prasad.

Citation when using this data: Saxena RK & Hyde KD in prep – Fungalpedia, Fossil Fungi. 

Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1            

Classification: Microthyriales, Dothideomycetes, Ascomycota, Fossil Fungi.

The monotypic fossil genus Koshalia was described from the Subathu Formation (Late Ypresian, 5652 mya) at Koshalia Nala near Koti, Shimla Hills, Himachal Pradesh, India (Sarkar & Prasad 2003). This genus is characterized by subspherical and multilayered thyriothecia (910 cells arranged in compact rings around an ostiole). Marginal cells are extremely large, while inner cells are small and subcircular. Only one species listed in Index Fungorum (2023) under this genus.

Type species: Koshalia enigmata  S. Sarkar, and V. Prasad.



Figure 1 Koshalia enigmataScale bar = 20 μm. Redrawn from Sarkar & Prasad (2003).



Sarkar S, Prasad V. 2003 – Koshalia, an Incertae sedis fossil from the Subathu Formation (Late Ypresian) Himachal Pradesh, India. Palaeobotanist 52, 113–116.


Entry by

Ramesh K. SaxenaBirbal Sahni Institute of Palaeosciences, Lucknow, India


(Edited by Kevin D. Hyde, Samaneh Chaharmiri-Dokhaharani, & Achala R. Rathnayaka)