Ammonites - Spring Creek, Cooke Co., TX

Kingdom: Animalia, Phylum: Mollusca, Class: Cephalopoda, Subclass: Ammonoidea, Order: Ammonitida

In Cooke Co., we found very large Eopachydiscus, Mortoniceras, and Idiohamites. Some of the Eopachydicus were up to three feet in diameter.  Spring Creek in Cooke County is one of the premier collecting sites in north Texas, however, most of the sites are on private land.  The Eopachydiscus are so plentiful that in some areas you can walk across the creek on them. This is the Cretaceous - Albian stage - Duck Creek Formation (c. 103 mya). 

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Eopachydiscus in Creekbed

Duck Creek Formation

Cooke Co., TX

Eopachydiscus in situ

Duck Creek Formation

Cooke Co., TX

In situ Mortoniceras

Duck Creek Formation

Cooke Co., TX

Eopachydiscus in situ

Duck Creek Formation

Cooke Co., TX

Eopachydiscus

Duck Creek Formation

Cooke Co., TX

Mortoniceras

Duck Creek Formation

Cooke Co., TX

Eopachydiscus 

Duck Creek Formation

Cooke Co., TX

Idiohamites 

Duck Creek Formation

Cooke Co., TX

Heteromorph

Duck Creek Formation

Cooke Co., TX

Idiohamites

Duck Creek Formation

Cooke Co., TX

Eopachydiscus 

Duck Creek Formation

Cooke Co., TX

Eopachydiscus Suture

Duck Creek Formation

Cooke Co., TX

Mortoniceras

Duck Creek Formation

Cooke Co., TX

 

Mortoniceras

Duck Creek Formation

Cooke Co., TX

Mortoniceras Imprint

Duck Creek Formation

Cooke Co., TX

14 inch Eopachydiscus Duck Creek Formation Cooke Co., TX

14 inch Eopachydiscus

Duck Creek Formation

Cooke Co., TX

11 inch Eopachydiscus

Duck Creek Formation

Cooke Co., TX

10 inch Eopachydiscus

Duck Creek Formation

Cooke Co., TX

Mortoniceras #630

Duck Creek Formation

Cooke Co., TX

Idiohamites Imprint

Duck Creek Formation

Cooke Co., TX

Idiohamites in Matrix #633

Duck Creek Formation

Cooke Co., TX

Moroniceras in Situ #641a

Duck Creek Formation

Cooke Co., TX

Mortoniceras venter #635

Duck Creek Formation

Cooke Co., TX

Mortoniceras #641b

Duck Creek Formation

Cooke Co., TX

Mortoniceras #636

Duck Creek Formation

Cooke Co., TX

Eopachydiscus in situ

Duck Creek Formation

Cooke Co., TX

Idiohamites #639b

Duck Creek Formation

Cooke Co., TX

Various in situ

Duck Creek Formation

Cooke Co., TX

15 inch Eopachydiscus #642

Duck Creek Formation

Cooke Co., TX

9 inch Mortoniceras #627

Duck Creek Formation

Cooke Co., TX

Mortoniceras #628

Duck Creek Formation

Cooke Co., TX

Mortoniceras #629

Duck Creek Formation

Cooke Co., TX

Mortoniceras #685

Duck Creek Formation

Cooke Co., TX

Mortoniceras #686

Duck Creek Formation

Cooke Co., TX

 5 inch Mortoniceras #687

Duck Creek Formation

Cooke Co., TX

4.5 inch Mortoniceras #688 Duck Creek Formation Cooke Co., TX

4.5 inch Mortoniceras #688

Duck Creek Formation

Cooke Co., TX

6 inch Mortoniceras #783

Duck Creek Formation

Cooke Co., TX

Mortoniceras #784b

Duck Creek Formation

Cooke Co., TX

Mortoniceras #784

Duck Creek Formation

Cooke Co., TX

Mortoniceras #785 venter Duck Creek Formation Cooke Co., TX

Mortoniceras #785 venter

Duck Creek Formation

Cooke Co., TX

Mortoniceras #785b

Duck Creek Formation

Cooke Co., TX

Mortoniceras #786 showing siphuncle

Duck Creek Formation

Cooke Co., TX

Mortoniceras #787

Duck Creek Formation

Cooke Co., TX

6 inch Mortoniceras #789

Duck Creek Formation

Cooke Co., TX

4 inch Mortoniceras #790b

Duck Creek Formation

Cooke Co., TX

4 inch Mortoniceras #790

Duck Creek Formation

Cooke Co., TX

7 inch Eopachydiscus #817 

Duck Creek Formation

Cooke Co., TX

7 inch Mortoniceras #818

Duck Creek Formation

Cooke Co., TX

3.5 inch Mortoniceras #820

Duck Creek Formation

Cooke Co., TX

Eopachydiscus #821b

Duck Creek Formation

Cooke Co., TX

5 inch Eopachydiscus #821

Duck Creek Formation

Cooke Co., TX

Mortoniceras 822b

Duck Creek Formation

Cooke Co., TX

Mortoniceras #822 showing siphuncle

Duck Creek Formation

Cooke Co., TX

Mortoniceras #823

Duck Creek Formation

Cooke Co., TX

Mortoniceras #824

Duck Creek Formation

Cooke Co., TX

Mortoniceras #825

Duck Creek Formation

Cooke Co., TX

2 inch Mortoniceras #828

Duck Creek Formation

Cooke Co., TX

7 inch Mortoniceras #825

Duck Creek Formation

Cooke Co., TX

5 inch Mortoniceras #826

Duck Creek Formation

Cooke Co., TX

3.5 inch Mortoniceras #827

Duck Creek Formation

Cooke Co., TX

3.5 inch Mortoniceras #827c

Duck Creek Formation

Cooke Co., TX

Idiohamites #829b Duck Creek Formation Cooke Co., TX

Idiohamites #829b

Duck Creek Formation

Cooke Co., TX

Idiohamites #829c

Duck Creek Formation

Cooke Co., TX

Idiohamites #829

Duck Creek Formation

Cooke Co., TX

5 inch Mortoniceras #833b

Duck Creek Formation

Cooke Co., TX

Oxytropiceras #1055

Duck Creek Formation

Cooke Co., TX

7 inch Eopachydiscus #835

Duck Creek Formation

Cooke Co., TX

Mortoniceras #1056

Duck Creek Formation

Cooke Co., TX

4.5 inch Mortoniceras #836

Duck Creek Formation

Cooke Co., TX

Mortoniceras #1058

Duck Creek Formation

Cooke Co., TX

5 inch Mortoniceras #838d

Duck Creek Formation

Cooke Co., TX