EX-21.1 2 a07-24767_1ex21d1.htm EX-21.1

EXHIBIT 21.1

Subsidiaries of Evolution Petroleum Corporation

		State of
		Incorporation		Name under which entity
Subsidiary		organization		does business
Natural Gas Systems, Inc.		Delaware		Natural Gas Systems
NGS Sub Corp.		Delaware		Natural Gas Systems
ARKLA Petroleum, LLC		Louisiana		Arkla Petroleum LLC
Four Star Development Corporation		Louisiana		Natural Gas Systems
				Four Star Development
				Corporation and Natural Gas Systems
NGS Technologies, Inc		Delaware		NGS Technologies, Inc.
Evolution Operating Co., Inc.		Texas		Evolution Operating Co., Inc.