Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Leyendecker Gregory T
 2. Date of Event Requiring Statement (Month/Day/Year)
07/16/2007		 3. Issuer Name and Ticker or Trading Symbol
ST MARY LAND & EXPLORATION CO [SM]
(Last)
(First)
(Middle)
1776 LINCOLN ST., STE. 700		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Vice President-General Manager
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

DENVER, CO 80203		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock; $.01 Par Value 128
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted Stock Unit   (2)   (2) Common Stock 1,000 $ (1) D  
Restricted Stock Unit   (3)   (3) Common Stock 103 $ (1) D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Leyendecker Gregory T
1776 LINCOLN ST.
STE. 700
DENVER, CO 80203		       Vice President-General Manager  

Signatures

/s/ Karin M. Writer (Attorney-In-Fact) 07/18/2007
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Each restricted stock unit represents a contingent right to receive one share of the issuer's common stock.
(2) The restricted stock units vest in three equal annual installments beginning December 1, 2007. Vested shares will be issued to the reporting person on December 1, 2009, at which time all restrictions lapse.
(3) The restricted stock units vest in four equal annual installments beginning February 28, 2007. Vested shares will be issued to the reporting person on February 28, 2010, at which time all restrictions lapse.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, See Instruction 6 for procedure.

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