Dorchester Minerals, L.P. Announces the Acquisition of Producing and Non-Producing Mineral and Royalty Interests

Approximately 577 acres of the subject lands are pooled into six units totaling 1800 acres, approximately 1129 acres are developed on a lease basis and the remaining lands are leased but not pooled or drilled upon. Thirty-two wells have been drilled from eleven padsites located on or adjacent to the properties, of which twenty-six wells are completed for production, six have been drilled but not yet completed and one well is currently drilling. Permits have been issued for three additional wells to be drilled on the properties. The aggregate net revenue interest in the properties ranges from 0.5% to 20.0%. Gross production during April 2009 from the properties was 571,015 mcf.

The transaction was structured as a non-taxable contribution and exchange. The contributing entities conveyed their undivided mineral and royalty interests in the subject lands to the Partnership in exchange for 1,600,000 common limited partnership units.

Dorchester Minerals, L.P. is a Dallas-based owner of producing and non-producing crude oil and natural gas mineral, royalty, overriding royalty, net profits, and leasehold interests and its common units trade on the NASDAQ Global Select Market under the symbol DMLP.

FORWARD-LOOKING STATEMENTS

Portions of this document may constitute "forward-looking statements" as defined by federal law. Such statements are subject to certain risks, uncertainties and assumptions. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those anticipated, estimated or projected. Examples of such uncertainties and risk factors include, but are not limited to, changes in the price or demand for oil and natural gas, changes in the operations on or development of the Partnership's properties, changes in economic and industry conditions and changes in regulatory requirements (including changes in environmental requirements) and the Partnership's financial position, business strategy and other plans and objectives for future operations. These and other factors are set forth in the Partnership's filings with the Securities and Exchange Commission.