UNITED STATES

SECURITIES AND EXCHANGE
COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Item 1.

Security and Issuer

This Schedule 13D (“Schedule”) relates to shares of common stock, par value $0.0001 per share (the “Common Stock” or the “Shares”), of Crdentia Corp., a Delaware corporation (the “Issuer” or the “Corporation”).  The principal executive office of the Corporation is at 5001 LBJ Freeway, Suite 850, Dallas, Texas 75244.

Item 2.

Identity and Background

This Schedule is filed on behalf of FatBoy Capital, L.P. (the “Reporting Person”) whose principal place of business is 9611 North U.S. Highway 1, Box 390, Sebastian, FL, 32958.  The Reporting Person is an investment limited partnership organized under the laws of the State of Delaware whose general partner is SeaCap Management, LLC, a Wyoming limited liability company (“SeaCap”).  David Jenkins (“Jenkins”) is the managing member of SeaCap.

None of the Reporting Person, SeaCap nor Jenkins has, during the last five years, been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).

The Reporting Person, SeaCap and Jenkins have not, during the last five years, been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and have not been subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, Federal or State securities laws or finding any violation with respect to such laws.

Item 3.

Source and Amount of Funds or Other Consideration

On October 26, 2007, the Reporting Person purchased 5,466,667 shares of Common Stock at a price of $0.30 per share and a warrant to purchase 2,733,333 shares of Common Stock (the “Pipe Warrant”) with an exercise price of $0.35 per share.  In addition, on October 26, 2007, the Reporting Person was issued a warrant to purchase 1,000,000 shares of Common Stock with an exercise price of $0.45 per share in exchange for financial and strategic consulting services previously rendered to the Issuer (the “Consulting Warrant” and together with the Pipe Warrant, the “Warrants”). The Warrants are immediately exercisable and have a five (5) year term.  The funds used to purchase the Common Stock and the Pipe Warrant were working capital of the Reporting Person.

Item 4.

Purpose of Transaction

The acquisitions described in Item 3 were made for investment purposes.  The Reporting Person does not presently have any plans or proposals which relate to or would result in any of the transactions described in Item 4 of Schedule 13D.

Item 5.

Interest in Securities of the Issuer

(a)           The Reporting Person beneficially owns 9,533,333 shares of the Issuer’s Common Stock.  The Reporting Person owns 5,800,000 shares of the Issuer’s Common Stock.  In addition, the Reporting Person holds Warrants to purchase 3,733,333 shares of Common Stock.  Based on the number of shares outstanding reported in the Issuer’s most recent proxy statement on Schedule 14A and the additional shares sold by the Issuer in the private placement transaction completed on October 26, 2007 (the “Pipe”), which was reported in the current report on Form 8-K filed by the Issuer on October 29, 2007, the percentage of Common Stock beneficially owned by the Reporting Person is 17.8%.

(b)           The Shares and Warrants are owned of record by the Reporting Person, and Jenkins is the managing member of SeaCap, the Reporting Person’s general partner.  Jenkins has the right to vote, direct the vote, dispose of and direct the disposition of the Shares and the Warrants.

(c)           On October 26, 2007, in the Pipe, the Reporting Person purchased 5,466,667 shares of the Issuer’s Common Stock for $0.30 per share and the Pipe Warrant.  In addition, the Issuer issued the Consulting Warrant to the Reporting Person on October 26, 2007.

(d)           Not applicable.

(e)           Not applicable.

Item 6.

Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer

The Reporting Person and the Issuer are parties to a Securities Purchase Agreement dated October 26, 2007, pursuant to which the Reporting Person purchased 5,466,667 shares of Common Stock and the Pipe Warrant in the Pipe transaction.

The Reporting Person and the Issuer are parties to the Registration Rights Agreement dated October 26, 2007, pursuant to which the Reporting Person was granted registration rights for the shares purchased in the Pipe and the shares issuable upon exercise of the Pipe Warrant.

The Reporting Person and the Issuer are parties to the Warrants.

Item 7.

Material to Be Filed as Exhibits

Exhibit
No.

Description

1.

Securities Purchase Agreement, dated October 26, 2007, by and between the Issuer, the Reporting Person and certain other investors.

2.

Registration Rights Agreement, dated October 26, 2007, by and between the Issuer, the Reporting Person and certain other investors.

3.

Common Stock Purchase Warrant to purchase 2,733,333 shares, dated October 26, 2007, by and between the Issuer and the Reporting Person.

4.

Common Stock Purchase Warrant to purchase 1,000,000 shares, dated October 26, 2007, by and between the Issuer and the Reporting Person.

FATBOY CAPITAL, LP

By: SeaCap Management, LLC, its general partner

/s/ Margrit Thomassen

Date: November 2, 2007

Name:

Margrit Thomassen

Title:

Chief Financial Officer