I'm not going to lie to you: I wouldn't be conducting a literature search on fungi of sheep dung for you if I wasn't recovering from a broken leg and unable to do much else. I found out there were over a hundred papers on this subject! If you have a database searching program at your library, you should try it! Meanwhile, here are a few of the more interesting ones:
Coprophilous Mucorales (ex Zygomycota) from three areas in the semi-arid of Pernambuco, Brazil.
de Souza, C.A.; Lima, D.X.; Gurgel, L.M.; Monteiro de Azevedo Santiago, A.L.
Brazilian journal of microbiology, 2017, 48 (1), 79-86
Infestation of sheep dung by nematophagous fungi and implications for the control of free-living stages of gastro-intestinal nematodes
Hay, FS; Niezen, JH; Miller, C; Bateson, L; Robertson, H
Veterinary parasitology, 1997, 70 (4), 247-254
Invasion of sheep dung by Nematophagous fungi and soil nematodes on a hill country pasture in New Zealand
The effect of dung beetle activity on the discharge of Pilobolus (Fungi, Mucorales) sporangia in cattle, sheep and horse faeces
Biggane, R.P.J.; Gormally, M.J.
Entomophaga, 1994, 39 (1), 95-98
Biological control of nematode parasites of livestock in Fiji: screening of fresh dung of small ruminants for the presence of nematophagous fungi
Manueli, PR; Waller, PJ; Faedo, M; Mahommed, F
Veterinary parasitology, 1999, 81 (1), 39-45
Studies of coprophilous Sphaeri-ales in Ontario
Cain, R.F.
Univ toronto studies biol ser, 1934, 38, 1-126
Coprophilous fungi on horse, goat and sheep dung from Lombardia (Italy)
Caretta, G.; Mangiarotti, A.M.; Piontelli, E.
Micologia italiana, 1994, 23 (2), 11-20
A study on thermophilic and thermotolerant microfungal flora of dung found in sheep and cow stables in some districts and villages of Erzurum province.
Hasenekoglu, I.; Yesilyurt, S.
Turkish journal of botany, 1996, 20 (Suppl.), 135-141
ASSOCIATIONS BETWEEN COPROPHILOUS ASCOMYCETES AND FECAL SUBSTRATES IN ILLINOIS USA
Parker, A.D.
Mycologia, 1979, 71 (6), 1206-1214
Analysis of a sheep pasture ecosystem in the Pieniny mountains (the Carpathians). VIII. Development of microflora in dung and in soil of a spring sheep-fold.
There are certain saprophytic fungi in the soil able to develop an antagonistic effect against eggs of parasites. Some of these fungal species are ingested by animals during grazing, and survive in their feces after passing through the digestive tract. Isolates of Fusarium, Lecanicillium, Mucor, Trichoderma, and Verticillium showed an ovicidal effect classified as type 3, because of their ability to adhere to the eggshell, penetrate, and damage permanently the inner embryo. Penicillium and Gliocladium developed a type 1 effect (hyphae attach to the eggshell but morphological damage was not provoked.
A large number of species of mostly saprotrophic fungi can be found growing on sheep dung. Representative species of all major groups can be found - basidiomycetes, ascomycetes, 'phycomycetes', as well as slime moulds. Different methods of examination will result in different assemblages - damp chamber incubation can produce around 10-15 species over 1-2 months' incubation. Tiny pieces placed on PDA or PCA will produce a lot of mycelial growth of Mucorales etc., but will become quickly overgrown. Depends what you are looking for. See Mycol. Res. 105 (4) : 387±402 (April 2001). Diversity and occurrence of coprophilous fungi and Webster J. (1970). Coprophilous fungi: Presidential address. Transactions of the British Mycological Society 54: 161‐180.