There was a piece of land sticking out between valleys of about 2000+ sq meters. I found there many various fossils. On that ridge sticking out, there was a rocky bed floor split in 2 or more & were cracked as an earthquake would do. Between them, I found this piece along with another not far inside the crack. I had to be creative to pull them. The matrix below is woody and lightweight and can be broken. On top, is a solid rock and very petrified "something" & sticking together as 1 matrix.