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).