Location: San Jose, CA
Found solo, with no matrix in an area with almost no crocodile fossil sites so it's a long shot but it is what it looks like (at least from what I've found on-line.
Check out some of the Educational Materials for sale on our sister site fossilicious.com.
interested in more? If so, you may want to check out our other sites:
fossilicious.com - Our online fossil and mineral rock shop.
rocksandminerals4u.com - An educational site about rocks, minerals, and geology.