Found in Great Horned Owl pellet
Partial skull + intact jaws
ID based primarily on jaw features:
One incisor each jaw
Diastema present
No canines
Coronoid process and condyle are distinct, separate structures.
Angle lies on same level as cheek teeth
Lower edge of ramus is convex.
Jaw is ~24mm long
Fairy shrimp! In a puddle near Pt Reyes Station!
This one has been hanging out at my shop for the last few months. Let's you get pretty close for pictures.