EXHIBIT 12.1

Alta Mesa Holdings, LP

Ratio of Earnings to Fixed Charges

	Nine Months Ended September 30, 2012			2011		2010		2009			2008		2007
	(dollars in thousands, except ratio)
Earnings:
Net income (loss) before tax	$	(45,635	)	$	65,407	$	14,231	$	(50,037	)	$	36,880	$	(27,476	)
Fixed charges:
Interest (1)		29,765			38,565		23,981		11,949			9,212		9,010
Earnings before fixed charges		(15,870	)		103,972		38,212		(38,088	)		46,092		(18,466	)
Fixed charges:
Interest (1)		29,765			38,565		23,981		11,949			9,212		9,010
Total fixed charges	$	29,765		$	38,565	$	23,981	$	11,949		$	9,212	$	9,010
Ratio of earnings to fixed charges		N/A			2.70		1.59		N/A			5.00		N/A

(1) Interest expense includes interest on debt, amortization of discount on debt, and an estimate of the interest expense portion of rent expense.