This is still very immature, at the stage where the bulbous base dominates the much smaller, unexpanded cap that sits like a smaller ball atop the bulbous base. Eventually the cap becomes much larger than the base.
Those pesky mushroom eaters! In a book published in 1759 Antonio Battarra tells of an experiment he’d carried out in 1747. This was a time when many still believed that fungi did not produce anything like seeds but just grew from the slime of the earth. However, there were those who believed otherwise and experimented. Battarra says he had collected powder from a gilled fungus and had sown this powder in ideal conditions. He soon saw small, embryonic mushrooms but when he went back three days later he says “to my great displeasure I found everything eaten by insects”.
Rats and antechinus eat them as well I think. A brilliant fungal experience was walking in Dorrigo National Park some years ago when the fungi were releasing spores ... there were clouds of it. Amazing.