When issuing the command "fdisk -l" I see device mapper entires as well as block device entries, is this normal?

Issue

fdisk -l reports both device mapper and block devices:

Disk /dev/sdc: 32.2 GB, 32212254720 bytes
255 heads, 63 sectors/track, 3916 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00012f54

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1               1        2790    22403072   83  Linux
/dev/sdc2            2790        3810     8192000   82  Linux swap / Solaris

Disk /dev/mapper/mpathb: 32.2 GB, 32212254720 bytes
255 heads, 63 sectors/track, 3916 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00012f54

             Device Boot      Start         End      Blocks   Id  System
/dev/mapper/mpathbp1               1        2790    22403072   83  Linux
/dev/mapper/mpathbp2            2790        3810     8192000   82  Linux swap / Solaris