The Miami Dolphins signed offensive tackle Lydon Murtha from the Detroit Lions' practice squad today, the team announced.

To make room on the roster for Murtha, the Dolphins cut offensive guard Shawn Murphy.

The 6-7, 315-pound Murtha was a seventh-round draft choice of the Lions this year out of Nebraska. He was signed to the Lions' practice squad on Sept. 7 after being released by Detroit on Sept. 5.

Murphy was originally a fourth-round draft choice by Miami in the 2008 NFL draft. He was inactive for the first five games in 2009 and for all 16 games in 2008.

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