Phylum: Chordata

Class: Reptilia
Order: Squamata
Superfamily: Mosasauroidea
Family: Mosasauridae 
(mosasaur)

The family Mosasauridae contains the subfamilies:  Halisaurinae, Mosasaurinae, Plioplatecarpinae, and Tylosaurinae
Plioplatecarpus sp. vertebrae  [+] Formation: Marlbrook Period: Cretaceous Loc: Arkansas	same (bottom view) [+] Formation: Marlbrook Period: Cretaceous Loc: Arkansas	same (left vertebra only, bottom view) [+] Formation: Marlbrook Period: Cretaceous Loc: Arkansas
same (back view)  Formation: Marlbrook Period: Cretaceous Loc: Arkansas	same (front view)  Formation: Marlbrook Period: Cretaceous Loc: Arkansas	same (side view)  Formation: Marlbrook Period: Cretaceous Loc: Arkansas
Tylosaurus  "Heath Mosasaur"  [+] Formation: Ozan? Period: Cretaceous Loc: Lake Ray Hubbard, Rockwall Co., Tx.	Tylosaurus proriger (cast) Formation: ? Period: Cretaceous Loc:	Platycarpus (mosasaur) Formation: ?? Period: Cretaceous Loc: Dallas co., Tx.  Dallas Museum NH
Platycarpus (mosasaur) vertebra   Formation: Ozan Period: Cretaceous Loc: NSR, Delta co., Tx.	same Formation: Ozan Period: Cretaceous Loc: NSR, Delta co., Tx.	miscellaneous bones Formation: Ozan? Period: Cretaceous Loc: NSR, Fannin co., Tx.  Nov. 12, 2005.
Russellosaurus coheni jaw (new basal mosasaurid) Formation: Eagle Ford Period: Cretaceous Loc: Dallas co., Tx. [Found by Mark C, SMU collection]	Russellosaurus? jaw section [+] Formation: Eagle Ford Period: Cretaceous Loc: Dallas co., Tx. Sep. 2011 [Found by Kerry K]

Phylum: Chordata

Class: Reptilia
Order: Ichthyosauria
Family: Ophthalmosauridae
(ichthyosaur)

Platypterygius sp. Ichthyosaur vertebra  Formation: Mainstreet Period: Cretaceous Loc: Tarrant co., Tx. June 20, 2010. [Found by Roz M]	Platypterygius sp. Ichthyosaur vertebra (same) Formation: Mainstreet Period: Cretaceous Loc: Tarrant co., Tx. June 20, 2010. [Found by Roz M]
Platypterygius sp. Ichthyosaur tooth Formation: Kiamichi Period: Cretaceous Loc: Tarrant co., Tx. May 28, 2011.	Platypterygius sp. Ichthyosaur tooth [same] Formation: Kiamichi Period: Cretaceous Loc: Tarrant co., Tx. May 28, 2011.

Phylum: Chordata

Class: Reptilia
Order: Plesiosauria
Suborder: Plesiosaur
(plesiosaur)

A plesiosaur vertebra Formation: Ozan Period: Cretaceous Loc: Fannin co., Tx. [Found by Roz M]	A plesiosaur vertebra (same) Formation: Ozan Period: Cretaceous Loc: Fannin co., Tx. [Found by Roz M]	A plesiosaur tooth?? Form: Eagle Ford (Britton shale)  Period: Cretaceous (c. 100 mya) Loc: Tarrant co., Tx.
Plesiosaur vertebrae Formation: Eagle Ford Period: Cretaceous Loc: Denton co., Tx. (SMU collection)	Plesiosaur vertebrae Formation: Eagle Ford Period: Cretaceous Loc: Denton co., Tx. (SMU collection)
Libonectes morgani skull Formation: Eagle Ford Period: Cretaceous Loc: Cedar Hill, Tx. (Found by T.W. Tidwell, SMU Coll.)	Libonectes morgani skull Formation: Eagle Ford Period: Cretaceous Loc: Cedar Hill, Tx. (SMU collection)	Libonectes morgani mandible Formation: Eagle Ford Period: Cretaceous Loc: Cedar Hill, Tx. (SMU collection)

Phylum: Chordata

Class: Reptilia
Order: Squamata
Suborder: Sauria
Family: ?

Coniasaurus  vertebrae Formation: Eagle Ford Period: Cretaceous (c. 94 mya) Loc: Tarrant co., Tx. 2006.

Coniasaurus jaw Formation: Eagle Ford Period: Cretaceous (c. 94 mya) Loc: Tarrant co., Tx. [Found by Phil S, SMU collection]

Phylum: Chordata

Class: Reptilia
Order: Testudines
(turtles)

turtle limb bone Formation: Marlbrook Period: Cretaceous  (upper Campanian, 70-72 mya) Loc: Arkansas  [Found by Roz M]	turtle limb bone Formation: Eagle Ford (Britton shale) Period: Cretaceous (c. 94 mya) Loc: Tarrant co., Tx.	Ctenochelys (Toxochelys) skull [+] Formation: Marlbrook Period: Cretaceous  (upper Campanian, 70-72 mya) Loc: Arkansas
turtle shell Formation: Woodbine Period: Cretaceous  Loc: Tarrant co., Tx. Sep. 9, 2012.	turtle shell  (side view) Formation: Woodbine Period: Cretaceous  Loc: Tarrant co., Tx. Sep. 9, 2012.

Phylum: Chordata

Class: Reptilia
Branch: Crocodylomorpha?
Family: Goniopholididae?
(crocodiles)

Two crocodile teeth Formation: Woodbine Period: Cretaceous  Loc: Tarrant co., Tx. Sep. 9, 2012. [Found by Brad C]	A crocodile osteoderm (  "scute" )   Formation: Woodbine Period: Cretaceous  Loc: Denton co., Tx. Feb. 2013. [Brad C. coll.]
Lee, Yuong–Nam (1997). "The Archosauria from the Woodbine Formation (Cenomanian) in Texas". Journal of Paleontology 71 (6): 1147–1156.

Phylum: Chordata

Class: Reptilia
Order: Ornithischia
Suborder: Cerapoda

Tenontosaurus dossi  [+] Formation: Antlers Period: Cretaceous (113-120 mya) Loc: Wise co, Tx.

A herbivorous "Hypsilophodontid" dinosaur [+] Formation: Twin Mountains Period: Cretaceous (113-120 mya) Loc: Comanche co., Tx.

Phylum: Chordata

Class: Reptilia
Order: Ornithischia
Infraorder: Ankylosauria
Family: Nodosauridae
(ankylosaur)

Pawpawsaurus campbelli (cast of skull) Formation: Pawpaw Period: Cretaceous (97-98 mya) Loc: Tarrant co., Tx. Perot Museum, Dallas	A nodosaurid (Ankylosaur ?) tooth Formation: Woodbine Period: Cretaceous  Loc: Tarrant co., Tx. Sep. 9, 2012. [Brad C. coll.]
Lee, Y.-N. (1996). A new nodosaurid ankylosaur (Dinosauria: Ornithischia) from the Paw Paw Formation (Late Albian) of Texas. Journal of Vertebrate Paleontology 16:232-345

Phylum: Chordata

Class: Reptilia
Order: Ornithischia
Suborder: Ornithopoda
Superfamily: Hadrosauroidea
(hadrosaur)

Protohadros byrdi tooth Formation: Woodbine Period: Cretaceous (c. 94 mya) Loc: Denton co., Tx. (SMU collection)	Protohadros byrdi jaw Formation: Woodbine Period: Cretaceous (c. 94 mya) Loc: Denton co., Tx. (SMU collection)	Protohadros byrdi skull pieces Formation: Woodbine Period: Cretaceous (c. 94 mya) Loc: Denton co., Tx. (SMU collection)
A hadrosaur tooth (tip) Formation: Woodbine Period: Cretaceous  Loc: Tarrant co., Tx. Sep. 9, 2012.	A dinosaur vertebra [+] Formation: Woodbine Period: Cretaceous  Loc: Denton co., Tx. 2013. [Brad C. coll.]	A dinosaur vertebra (same) [+] Formation: Woodbine Period: Cretaceous  Loc: Denton co., Tx. 2013. [Brad C. coll.]
Head J., 1998, "A new species of basal hadrosaurid (Dinosauria, Ornithopoda) from the Cenomanian of Texas", Journal of Vertebrate Paleontology 18 (4); 718 - 738 (1998).

Phylum: Chordata

Class: Reptilia
Order: Saurischia
(theropod dinosaurs)

Unknown theropod dinosaur tooth Formation: Woodbine Period: Cretaceous  Loc: Tarrant co., Tx. Sep. 9, 2012.

Dinosaur tracks:

Theropod dinosaur track Formation: Glen Rose Period: Cretaceous  Loc: Somervell co., Tx. Jan. 24, 2010.

For many more pictures of the new Glen Rose dinosaur track site go to these pages: Jan. 13, 2010 Jan. 24, 2010