PetroFrontier Corp. and Texalta Petroleum Ltd. Announce Mailing of Information Circular

PetroFrontier Corp. ("PetroFrontier") (TSX VENTURE:PFC) and Texalta Petroleum
Ltd. ("Texalta") (TSX VENTURE:TEX.A) are pleased to announce that Texalta has
mailed its information circular and proxy statement dated May 2, 2011 (the
"Information Circular") in respect of the proposed plan of arrangement pursuant
to the provisions of the Business Corporations Act (Alberta) (the "Arrangement")
among Texalta, PetroFrontier and the shareholders of Texalta that was previously
announced on March 21, 2011. The Information Circular has also been posted under
Texalta's profile on the System for Electronic Document Analysis and Retrieval
at www.sedar.com.


Texalta has given notice that a special meeting (the "Meeting") of the holders
of class A common shares ("Texalta Shareholders") of Texalta will be held in the
Tuscany Room of the Ramada Inn, 708 - 8th Avenue S.W., Calgary, Alberta on
Monday, May 30, 2011 at 9:00 a.m. (Calgary time) to consider the Arrangement.
The record date for the determination of Texalta Shareholders entitled to
receive notice of, and to vote at, the Meeting is April 29, 2011.


Texalta has scheduled an application to be heard by the Court of Queen's Bench
of Alberta for the final order (the "Final Order") to approve the Arrangement on
May 30, 2011. Assuming approval of the Arrangement by the Texalta Shareholders
at the Meeting, the granting of the Final Order, receipt of all other required
approvals and the satisfaction or waiver of all conditions set forth in the
arrangement agreement dated March 21, 2011 between PetroFrontier and Texalta,
the parties anticipate that the Arrangement will close on or about May 31, 2011.


For more information on PetroFrontier, please visit www.petrofrontier.com, and
for more information on Texalta, please visit www.texalta.com.


About PetroFrontier 

PetroFrontier is an international oil and gas company engaged in the
exploration, acquisition and development of both conventional and unconventional
onshore petroleum assets in Australia's Southern Georgina Basin. Founded in
2009, PetroFrontier is one of the first companies to undertake onshore
exploration in the Southern Georgina Basin in Australia's Northern Territory.
PetroFrontier's head office is based in Calgary, Alberta and operations office
is in Adelaide, South Australia.


About Texalta 

Texalta is a Calgary based company engaged in the exploration, acquisition and
development of prospective oil & gas properties in Saskatchewan and Alberta,
Canada. Texalta's wholly owned subsidiary, Texalta Australia Pty. Ltd. holds a
50 percent working interest in EP 103 and EP 104, covering 5.7 million gross
acres of prospective land in the Southern Georgina Basin, Northern Territory,
Australia.


Forward-Looking Statements 

This press release contains forward-looking information that involves
substantial known and unknown risks and uncertainties, most of which are beyond
the control of PetroFrontier and Texalta, including, without limitation,
statements pertaining to the closing of the Arrangement. Should one or more of
these risks or uncertainties materialize, or should assumptions underlying the
forward-looking information prove incorrect, actual results, performance or
achievements could vary materially from those expressed or implied by the
forward-looking information. Accordingly, prospective investors should not place
undue reliance on these forward-looking statements. A description of assumptions
used to develop such forward-looking information and a description of risk
factors that may cause actual results to differ materially from forward-looking
information can be found in PetroFrontier's and Texalta's disclosure documents
on the SEDAR website at www.sedar.com and in the Information Circular. Any
forward-looking statements are made as of the date of this release and, other
than as required by applicable securities laws, neither PetroFrontier nor
Texalta assume any obligation to update or revise them to reflect new events or
circumstances.


This press release does not constitute an offer to sell or a solicitation of an
offer to buy any of the securities in the United States of America. The
securities have not been and will not be registered under the United States
Securities Act of 1933 (the "U.S. Securities Act") or any state securities laws
and may not be offered or sold within the United States or to U.S. Persons (as
defined in the U.S. Securities Act) unless registered under the U.S. Securities
Act and applicable state securities laws, or an exemption from such registration
is available.