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Fossil of Entropezites patricii

Entropezites was a hypermycoparasitic (a parasite of parasitic fungus) fungus in the order Hypocreales. It lived during the Cretaceous period about 100 million years ago.

The only known specimen is a fossil in amber. The fossil contains one partly decomposed Palaeoagaracites fungus mushroom that hosts a parasitic fungus called Mycetophagites. Mycetophagites is the host of Entropezites.

Hyphae of Entropezites are preserved penetrating the Mycetophagites hyphae forming areas of decomposing tissues. Entropezites also displays a range of growth stages for probable zygospores.