CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
Board of Directors,
Quaterra Resources Inc.
We hereby consent to the incorporation by reference in the Form 40F, dated March 26, 2008, of Quaterra
Resources Inc. (an exploration stage company) (the “Company”) our report dated March 26, 2008, relating to
the Company’s consolidated balance sheets as of December 31, 2007, 2006 and 2005 and the related
consolidated statements of operations and deficit and cash flows for each of the years ended December 31,
2007, 2006 and 2005.
“Smythe Ratcliffe LLP” (signed)
March 26, 2008
7 th Floor, Marine Building
355 Burrard Street, Vancouver,
Canada V6C 2G8