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Geastrum australe
New England highway, COLD environment.
Hi Katie. I'm 90% certain your spotting is G. australe. However, there are other Geastrum species that look very similar: G. saccatum, G. velutinum, and G. triplex. Also worth considering also, but my image searches always lead me back to my original suggestion.
This is an Earthstar fungus.
Since I am not familiar with Australian species, I can't give you a specific identification. In mature specimens, a cloud spores will come out of that orifice at the top when the fungus is gently squeezed.