Phylum: Chordata

Class: Chondrichthyes
Superorder: Batoidea
Order: Myliobatiformes (rays)
Family: Rhombodontidae
Genus: Rhombodus

Rhombodus binkhorsti teeth Strata: Navarro Group Period: Cretaceous (65-70 mya) Hunt Co., TX.  July 17, 2010.

Also found in Texas are the rays Rhinobatos, Protoplatyrhina, Brachyrhizodus, Dasyatis. The order Rajiformes includes skates and guitarfish.

Class: Chondrichthyes
Subclass: Elasmobranchii
Order: uncertain
Family: Sclerorhynchidae
Genus: Ischyrhiza
(sawfish)

Ischyrhiza sp. rostral spine Strata: Ozan ?? Period: Cretaceous   Loc: Northeast Texas. [Found by Sterling Z.]

Class: Chondrichthyes
Order: Pristiformes
Family: Pristidae
Genus: Onchopristis
(sawfish)

Onchopristis sp. - rostral spine [+] Strata: Kiamichi  Period: Cretaceous  (c. 102-103 mya) Loc: Tarrant Co., TX.  26 Aug 2012.	Onchopristis sp. - rostral spine Strata: Pawpaw Shale  Period: Cretaceous  (c. 102-103 mya) Loc: Denton Co., TX.  31 Mar 2019.
Also found in Texas is the sawshark Sclerorhyncus.