Windipila spinifera from the Rhynie cherts is a spheroidal microfossil enveloped in a hyphal mantle from which extend prominent spines and otherwise shaped projections. It is believed to be a reproductive unit of a fungus in the Glomeromycota or zygomycetes. but features to determine the systematic affinities have not hitherto been documented. This study describes a new specimen of W. https://www.soiebiologique.com/