TRX322 - SPINY DICRANURUS TRILOBITE WITH FULLY EXPOSED FLOATING SPINES ITEM # TRX322 ID Dicranurus monstrosus FOUND Atlas Mountains - Morocco AGE DEVONIAN: 395 - 345 million years ago SIZE 3.25" x 2.5" with original matrix, trilobite 1.75" in... $1,250.00 Add to Cart