Phylum: Mollusca (Mollusks)

Class:  Cephalopoda
Order:  Ammonitida
Suborder:  Ancyloceratina (heteromorph ammonites)
Super family: Turrilitaceae 
Family: Turrilitidae
(turrilites)

Mariella sp. Strata:  Del Rio (= Grayson)  Period: Cretaceous  (c. 98 mya) Loc: McLennan co.,Tx.  Nov. 17, 2007.	Mariella sp. Strata:  Pawpaw Shale Period: Cretaceous  (c. 98 mya) Loc: Tarrant Co., TX.  March 25, 2007.	Mariella brazoensis Strata:  Mainstreet Limestone Period: Cretaceous  (c. 97 mya) Loc: Tarrant Co., TX. June 20, 2010.
Mariella brazoensis Strata: Grayson Shale Period: Cretaceous  (c. 97 mya) Location: Denton Co., TX.  Aug. 18, 2007.	Pseudohelicoceras sp. ?? [+] Strata: Fort Worth Fm? Period: Cretaceous  (c. 100 mya) Location: Tarrant Co., TX.	Mariella sp. Strata:  Pawpaw Shale Period: Cretaceous (98 mya) Tarrant Co., TX.  1 Nov 2015

Class:  Cephalopoda
Order:  Ammonitida
Suborder:  Ancyloceratina (heteromorph ammonites)
Super family: Turrilitaceae 
Family: Diplomoceratidae

Glyptoxoceras sp.? Strata:  Ozan Fm. Period: Cretaceous  (c. 80 mya) Location: Fannin Co., TX.  Jan. 5, 2008.

Glyptoxoceras sp.? Strata:  Ozan Fm. Period: Cretaceous  (c. 80 mya) Location: Fannin Co., TX.  Jan. 5, 2008.