July 07, 2005 17:45 ET

Tyler Resources Announces Continued Mineralization at the Bahuerachi Main Zone, Including 35.4 Meters Grading 1.10% Copper, 7.66 g/t Silver and 0.32% Zinc in Diamond Drill Hole #32

CALGARY, ALBERTA--(CCNMatthews - July 7, 2005) - Tyler Resources Inc. (TSX VENTURE:TYS) is pleased to announce assay results for drill hole #32 from the Main Zone of its Bahuerachi project, Mexico. Results continue to identify porphyry related mineralized sediments and high grade breccia/skarn bodies on section 660N which carry copper, gold, silver, molybdenum and zinc, with grades and widths that continue to outline bulk tonnage potential in the Main Zone.

Significant intervals for drill holes DDH-BAH #32.

From To Interval Copper Gold Silver Zinc Mo
Hole # (m) (m) (m) (%) (g/t) (g/t) (%) (%) Rock Type
BAH-32 85.75 140.75 55 0.29 0.04 3.54 Trace 0.01 Sediments/
Minor Skarn
155.85 211.40 55.5 0.74 0.11 5.26 0.23 0.01 Skarn
Including 211.40
176 (a) 35.4 1.10 0.16 7.66 0.32 Trace Skarn

(a) The hole was lost at 211.40 meters in mineralization grading 0.74%
copper and 0.016% Molybdenum due to poor drilling conditions.

Drill hole #32 was designed to cross the western mineralized sediments and skarn body as well as continue into the Main porphyry but was lost due to difficult ground conditions in mineralization at a depth of 211.4 meters before its planned target depth. Significant mineralization has now been identified on section 660N over a width of approximately 200 meters, to maximum depths of 190 meters. The mineralized section remains open to depth and to the east and appears constrained to the west by a fault.

Drill holes BAH-34, 35, 36 and 37 have been completed at the Mina Mexicana Zone where recoveries have been good to excellent and holes were completed to their target depth. Drilling is now scheduled to continue in the Main Zone with hole #38. Drill hole #38 will be a large step out along strike of the Main Zone to the north, located approximately 600 meters from section 2NE. Mapping, trenching and surface sampling have confirmed the extension of the Main Zone in this area and the larger step out is being taken to accelerate the speed at which the main Zone is being evaluated in preparation for deeper drilling. Additional diamond drilling equipment, capable of drilling deeper holes, is still expected to be mobilized on site in August.

The Company continues to be encouraged by the widespread mineralization encountered to date on the project with grades and widths confirming open pit style, bulk tonnage mining potential and is looking forward to accelerating its pace of exploration as rapidly as conditions allow.

Please refer to the drill hole location plan map attached on http://www2.ccnmatthews.com/database/fax/2000/707tyler.pdf for the general location of all drill holes and sections.

The Qualified Person responsible for the design and implementation of the Field Program as well as the preparation of this news release was J. P. Jutras, P.Geol., and President of the Company. The work program was carried out with the participation of Dr. Shane William Ebert, Ph.D, P.Geo and Director, Mr. Brent Gonek, B.Sc, Geology, G.I.T., and Mr. Paul Turnbull, P.Geol, consultants to the Company.

"Jean Pierre Jutras"

Jean Pierre Jutras, P.Geol.
President and Director

Except for the historical and present factual information contained herein, the matters set forth in this news release, including words such as "expects", "projects", "plans", "anticipates" and similar expressions, are forward-looking information that represents management of Tyler's internal projections, expectations or beliefs concerning, among other things, future operating results and various components thereof or the economic performance of Tyler. The projections, estimates and beliefs contained in such forward-looking statements necessarily involve known and unknown risks and uncertainties, which may cause Tyler's actual performance and financial results in future periods to differ materially from any projections of future performance or results expressed or implied by such forward-looking statements. These risks and uncertainties include, among other things, those described in Tyler's filings with the Canadian securities authorities. Accordingly, holders of Tyler shares and potential investors are cautioned that events or circumstances could cause results to differ materially from those predicted. Tyler disclaims any responsibility to update these forward-looking statements.

The TSX Venture Exchange has neither approved nor disapproved of the contents of this press release.

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