Identificaciones de protostega123

Super big snapper

I can’t tell from the photos which type of turtle it is. Any suggestions?

pair of turtles presumably mating

On American River Bike Trail adjacent to Urretia pond and moved into adjacent vegetation along Steelhead Creek

Sadly it was dead! Found floating on the edge of the pond and checked to see if still alive. Unfortunately passed but neat to observe the beautiful markings up close (but had some leaves stuck to it)

Not sure how common these are but it was walking undisturbed in the village which basically was semi dessert.