Not according to page 135 of the 660 page data "sheet." In paragraphs 16.11.15 and 16.11.6 it clearly shows two 16-bit registers at byte addresses 0x88, 0x89, 0x8A, and 0x8B. The higher addresses are for OCR1B.
Section 15 is for the 8-bit Timer0. I'm referring to Timer1, since it's the most available timer (not used by Arduino core routines, except for motor control).
Dr. Q