Longest dimension is approximately 1 inch.
Single specimen observed along underside of woody debris on the ground, presumed California bay. Other prominent trees nearby include California buckeye and coast live oak. Immediately adjacent to stream / riparian edge. Over 4.5 miles from Carquinez Strait, as the crow flies.
I'm not particularly familiar with the family, Vertigo sp. was my initial guess. I didn't see many prominent lamellae other than the single parietal (?) tooth. Not sure if additional teeth form with maturity?
I thought this might be Mitrella, but need some help here! 9 mm long, at edge of rocks at low tide.
Occupied.
~1cm
I don't know this little one.
After getting an early lunch, I went walking around River Legacy Park -- it was pretty crowded -- lots of folks enjoying the 60 degree weather! :)