**EXHIBIT 31.2**

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**CERTIFICATION CHIEF FINANCIALOFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002**

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I, James J. TerBeest, ChiefFinancial Officer of the Registrant, Crdentia Corp., certify that:

 

1.                                       I have reviewedthis quarterly report on Form 10-Q of Crdentia Corp.;

 

2.                                       Based on myknowledge, this quarterly report does not contain any untrue statement of amaterial fact or omit to state a material fact necessary to make the statementsmade, in light of the circumstances under which such statements were made, notmisleading with respect to the period covered by this quarterly report;

 

3.                                       Based on myknowledge, the financial statements, and other financial information includedin this quarterly report, fairly present in all material respects the financialcondition, results of operations and cash flows of the registrant as of, andfor, the periods presented in this quarterly report;

 

4.                                       Theregistrant’s other certifying officer and I are responsible for establishingand maintaining disclosure controls and procedures (as defined in Exchange ActRules 13a-15(e) and 15d-15(e)) for the registrant and we have:

 

(a)                                  designed suchdisclosure controls and procedures, or caused such disclosure controls andprocedures to be designed under our supervision, to ensure that materialinformation relating to the registrant, including its consolidatedsubsidiaries, is made known to us by others within those entities, particularlyduring the period in which this quarterly report is being prepared;

 

(b)                                 evaluated the effectivenessof the registrant’s disclosure controls and procedures and presented in thisreport our conclusions about the effectiveness of the disclosure controls andprocedures as of the end of the period covered by this quarterly report basedon such evaluation; and

 

(c)                                  disclosed inthis report any change in the registrant’s internal controls over financialreporting that occurred during the registrant’s most recent fiscal quarter (theregistrant’s fourth fiscal quarter in the case of an annual report) that hasmaterially affected, or is reasonably likely to materially affect, theregistrant’s internal control over financial reporting; and

 

5.                                       The registrant’sother certifying officer and I have disclosed, based on our most recentevaluation of internal control over financial reporting, to the registrant’sauditors and the audit committee of the registrant’s board of directors (orpersons performing the equivalent functions):

 

(a)                                  all significantdeficiencies and material weaknesses in the design or operation of internalcontrol over financial reporting which are reasonably likely to adverselyaffect the registrant’s ability to record, process, summarize and reportfinancial information; and

 

(b)                                 any fraud,whether or not material, that involves management or other employees who have asignificant role in the registrant’s internal control over financial reporting.

 
| Date:  May 15, 2008 |   | By:                                        | /s/ James J. TerBeest |
|--------------------------|--------|--------------------------------------------|-----------------------|
|                     |   |    James J.  TerBeest       |
|                     |   |    Chief  Financial Officer |

 

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