Here in my backyard in Southern California, there appears to be this relatively smooth, mottled-colored dome-like structure a little larger than a chicken egg in the dirt. Can anyone identify it? Is it some sort of insect nest or a multicellular fungus?
Edit: After a couple weeks, I've observed some changes. It appears as though this is definitely a fungus and it has been growing taller out of the base. I also see a few feet away something that looks a little different, but not that different, which appeared even at first to be more mushroom-like. Right now the closest thing I could find online is something like a Shaggy Mane. Here are the new photos:
Edit #2: It's been about three more weeks, and the fungus has continued growing larger. Also I am pretty confident that the second one is also the same species. Both have been growing longer and have started to crack at the top.