Document:

EXHIBIT 4.1

     NUMBER
U-__________                                                               UNITS

  SEE REVERSE FOR
CERTAIN DEFINITIONS      ARDENT ACQUISITION CORPORATION

                                                                           CUSIP

UNITS CONSISTING OF ONE SHARE OF COMMON STOCK AND TWO WARRANTS EACH TO PURCHASE
                           ONE SHARE OF COMMON STOCK

THIS CERTIFIES THAT ____________________________________________________________

is the owner of _________________________________________________________ Units.

Each Unit ("Unit")  consists of one (1) share of common stock,  par value $.0001
per share  ("Common  Stock"),  of Ardent  Acquisition  Corporation,  a  Delaware
corporation (the  "Company"),  and two warrants (the  "Warrants").  Each Warrant
entitles  the  holder to  purchase  one (1) share of Common  Stock for $5.00 per
share (subject to adjustment).  Each Warrant will become exercisable on later of
(i)  the  Company's  completion  of a  merger,  capital  stock  exchange,  asset
acquisition or other similar business combination and (ii) ______________, 2006,
and will  expire  unless  exercised  before  5:00 p.m.,  New York City Time,  on
____________,  2009, or earlier upon redemption  (the  "Expiration  Date").  The
Common Stock and Warrants  comprising the Units  represented by this certificate
are not transferable  separately prior to __________,  2005,  subject to earlier
separation in the discretion of EarlyBirdCapital, Inc. The terms of the Warrants
are  governed by a Warrant  Agreement,  dated as of _______,  2005,  between the
Company and Continental  Stock Transfer & Trust Company,  as Warrant Agent,  and
are subject to the terms and provisions  contained  therein,  all of which terms
and provisions the holder of this certificate  consents to by acceptance hereof.
Copies of the Warrant  Agreement  are on file at the office of the Warrant Agent
at 17 Battery Place,  New York, New York 10004, and are available to any Warrant
holder on written request and without cost.

      This  certificate is not valid unless  countersigned by the Transfer Agent
and Registrar of the Company.

      Witness the facsimile  seal of the Company and the facsimile  signature of
its duly authorized officers.

                         ARDENT ACQUISITION CORPORATION
                                    CORPORATE
                                    DELAWARE
                                      SEAL
                                      2004

By

   ________________________________             ________________________________
              Chairman of the Board             Secretary

<PAGE>

                         ARDENT ACQUISITION CORPORATION

      The  Company  will  furnish  without  charge  to each  stockholder  who so
requests,  a statement of the powers,  designations,  preferences  and relative,
participating, optional or other special rights of each class of stock or series
thereof of the Company and the qualifications,  limitations,  or restrictions of
such preferences and/or rights.

      The following  abbreviations,  when used in the inscription on the face of
this  certificate,  shall be  construed  as though they were written out in full
according to applicable laws or regulations:

<TABLE>
<S>                                                     <C>
TEN COM - as tenants in common                          UNIF GIFT MIN ACT - ______ Custodian _______
TEN ENT - as tenants by the entireties                                      (Cust)           (Minor)
JT TEN -  as joint tenants with right of survivorship                   under Uniform Gifts to Minors
          and not as tenants in common                                  Act ______________
                                                                                (State)
</TABLE>

Additional Abbreviations may also be used though not in the above list.

      FOR VALUE RECEIVED,  ___________________________  HEREBY SELL,  ASSIGN AND
TRANSFER UNTO

PLEASE INSERT SOCIAL SECURITY OR OTHER
    IDENTIFYING NUMBER OF ASSIGNEE

--------------------------------------

--------------------------------------

________________________________________________________________________________
  (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

________________________________________________________________________________

________________________________________________________________________________

__________________________________________________________________________ UNITS

REPRESENTED BY THE WITHIN CERTIFICATE,  AND DO HEREBY IRREVOCABLY CONSTITUTE AND
APPOINT

_______________________________________________________________________ ATTORNEY
TO TRANSFER  THE SAID UNITS ON THE BOOKS OF THE WITHIN  NAMED  COMPANY WILL FULL
POWER OF SUBSTITUTION IN THE PREMISES.

DATED _______________________

                                ________________________________________________
                                NOTICE: The  signature to this  assignment  must
                                        correspond with the name as written upon
                                        the  face of the  certificate  in  every
                                        particular,    without   alteration   or
                                        enlargement or any change whatever.

Signature(s) Guaranteed:

____________________________________________________________
THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE
GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN
ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN
APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM, PURSUANT TO
S.E.C. RULE 17Ad-15).EXHIBIT 4.2

      NUMBER                                                    SHARES

______AAC

                         ARDENT ACQUISITION CORPORATION

              INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE

                                  COMMON STOCK

                                                                 SEE REVERSE FOR
                                                             CERTAIN DEFINITIONS

THIS CERTIFIES THAT                                             CUSIP

IS THE OWNER OF

  FULLY PAID AND NON-ASSESSABLE SHARES OF THE PAR VALUE OF $.0001 EACH OF THE
                                COMMON STOCK OF

                         ARDENT ACQUISITION CORPORATION

  TRANSFERABLE ON THE BOOKS OF THE CORPORATION IN PERSON OR BY DULY AUTHORIZED
ATTORNEY UPON SURRENDER OF THIS CERTIFICATE PROPERLY ENDORSED. THIS CERTIFICATE
 IS NOT VALID UNLESS COUNTERSIGNED BY THE TRANSFER AGENT AND REGISTERED BY THE
 REGISTRAR. WITNESS THE SEAL OF THE CORPORATION AND THE FACSIMILE SIGNATURES OF
                         ITS DULY AUTHORIZED OFFICERS.

DATED:

                         ARDENT ACQUISITION CORPORATION
                                    CORPORATE
                                      SEAL
                                      2004
                                    DELAWARE

_______________________________                  _______________________________
CHAIRMAN                                         SECRETARY

<PAGE>

      The following  abbreviations,  when used in the inscription on the face of
this  certificate,  shall be  construed  as though they were written out in full
according to applicable laws or regulations:

<TABLE>
<S>                                                     <C>
TEN COM - as tenants in common                          UNIF GIFT MIN ACT - ______ Custodian _______
TEN ENT - as tenants by the entireties                                      (Cust)           (Minor)
JT TEN -  as joint tenants with right of survivorship                       under Uniform Gifts to Minors
          and not as tenants in common                                      Act ______________
                                                                                   (State)
</TABLE>

     Additional Abbreviations may also be used though not in the above list.

                         ARDENT ACQUISITION CORPORATION

      The  Corporation  will furnish  without charge to each  stockholder who so
requests the powers,  designations,  preferences  and  relative,  participating,
optional or other special rights of each class of stock or series thereof of the
Corporation  and  the  qualifications,  limitations,  or  restrictions  of  such
preferences and/or rights.  This certificate and the shares represented  thereby
are issued and shall be held subject to all the provisions of the Certificate of
Incorporation  and all  amendments  thereto  and  resolutions  of the  Board  of
Directors  providing for the issue of shares of Preferred Stock (copies of which
may be obtained  from the  secretary  of the  Corporation),  to all of which the
holder of this certificate by acceptance hereof assents.

      FOR VALUE RECEIVED,  ___________________________  HEREBY SELL,  ASSIGN AND
TRANSFER UNTO

PLEASE INSERT SOCIAL SECURITY OR OTHER
   IDENTIFYING NUMBER OF ASSIGNEE

--------------------------------------

--------------------------------------

________________________________________________________________________________
  (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

________________________________________________________________________________

________________________________________________________________________________

_________________________________________________________________________ SHARES

OF THE  CAPITAL  STOCK  REPRESENTED  BY THE  WITHIN  CERTIFICATE,  AND DO HEREBY
IRREVOCABLY CONSTITUTE AND APPOINT

_______________________________________________________________________ ATTORNEY
TO TRANSFER  THE SAID STOCK ON THE BOOKS OF THE WITHIN  NAMED  CORPORATION  WILL
FULL POWER OF SUBSTITUTION IN THE PREMISES.

DATED ______________________

                                ________________________________________________
                                NOTICE: The  signature to this  assignment  must
                                        correspond with the name as written upon
                                        the  face of the  certificate  in  every
                                        particular,    without   alteration   or
                                        enlargement or any change whatever.

Signature(s) Guaranteed:

____________________________________________________________
THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE
GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN
ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN
APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM, PURSUANT TO
S.E.C. RULE 17Ad-15).

The holder of this certificate shall be entitled to receive funds from the trust
fund only in the event of the Company's liquidation upon failure to consummate a
business combination or if the holder seeks to convert his respective shares
into cash upon a business combination which he voted against and which is
actually completed by the Company. In no other circumstances shall the holder
have any right or interest of any kind in or to the trust fund.

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