Phylum: Chordata

Class: Chondrichthyes
(sharks)

Pennsylvanian & Permian Periods: (click for Cretaceous Period)
Symmorium sp. tooth [+] [Formerly Cladodus] Strata: Graham (Finis shale) Period:  Pennsylvanian (c. 300 mya) Loc: Jack Co., TX.  Oct. 9, 2010	Symmorium sp. tooth (blades broke) [Formerly Cladodus] Strata:  Graham (Finis shale member) Period: Pennsylvanian (c. 300 mya) Location:  Jack Co., TX.  Sept. 27, 2008.
Symmorium sp. (Cladodus) tooth [Formerly Cladodus] Strata:  Graham (Finis shale member) Period: Pennsylvanian (c. 300 mya) Location:  Jack Co., TX  27 Sep 2014
Peripristis sp. tooth Strata:  Harpersville Period: Pennsylvanian (c. 300 mya) Location:  Coleman Co., TX.  March 20, 2010.
Orodus sp. [+] Strata:  Period: Pennsylvanian (c. 300 mya) Loc:  Wise Co., TX.  2014 by Wes K.	Orodus sp. tooth Strata:  unknown Period: Pennsylvanian (c. 300 mya) Location:  Palo Pinto Co., TX.  March 10, 2007?
Orodus sp. teeth Strata:  Garner (Mingus sh.) Period: Pennsylvanian (c. 304 mya) Location:  Parker Co., TX.  May 23, 2009.	??? Strata:  Graham (Finis shale member) Period: Pennsylvanian (c. 300 mya) Location:  Jack Co., TX  27 Sep 2014
Aggasizodus sp. tooth Strata:  Period: Pennsylvanian (c. 300 mya) Loc:  Wise Co., TX.  Feb. 2013 by Roz M.	Aggasizodus sp. ?? tooth Strata:  Graham (Finis shale member) Period: Pennsylvanian (c. 300 mya) Location:  Jack Co., TX.  Sept. 27, 2008.
Petrodus sp. denticles Strata:  Garner (Mingus sh.) Period: Pennsylvanian (c. 304 mya) Location:  Palo Pinto Co., TX.  2 Feb 2008.	Petrodus sp. denticles (oral?) Strata:  Garner (Mingus sh.) Period: Pennsylvanian (c. 304 mya) Location:  Palo Pinto Co., TX.  15 Jan 2011. [Found by Roz M]
Petrodus sp. denticles Strata:  Garner (Mingus sh.) Period: Pennsylvanian (c. 304 mya) Location:  Palo Pinto Co., TX.  11 Jan 2022.
Janassa sp. - symphyseal tooth. Strata:  Palo Pinto Period: Pennsylvanian (c. 300 mya) Location:  Palo Pinto Co., TX.  April 19, 2008.	Janassa sp. - tooth [+] Strata:  Lueders Period: Permian (c. 260 mya) Location:  Texas.  Nov. 7, 2009.
Petalodus sp. teeth Strata:  Graham (Finis Sh.) Period: Pennsylvanian (c. 300 mya) Location:  Jack Co., TX. 27 Sep 2014	Petalodus sp. - tooth  (root up, blade down)   Strata:  Harpersville Period: Pennsylvanian (c. 300 mya) Location:  Coleman Co., TX.  Feb. 4, 2006.
Petalodus sp. teeth Strata:  Harpersville Period: Pennsylvanian (c. 300 mya) Location:  Coleman Co., TX.  June 9, 2007.
Edestus sp. - tooth (blade broken off) Strata:  Garner (Mingus sh.) Period: Pennsylvanian (c. 304 mya) Location:  Parker Co., TX.  May 23, 2009.
Ctenacanthus sp. - spine segment Strata: Mineral Wells (Salesville shale) Period: Pennsylvanian (c. 300 mya) Loc: Palo Pinto Co., TX.  Dec 22, 2005.	Hybodus sp.? - spine   [by R Fry] Strata:  Lueders Limestone Period: Permian (c. 260 mya) Location:  Texas.  April 14, 2007.

Class: Chondrichthyes
(chimaeroids, skates, rays; pavement toothed)

Pennsylvanian & Permian Periods: (click for Cretaceous Period)
Deltodus sp. tooth  Strata:  Lueders Limestone Period: Permian (c. 260 mya) Location: Texas.  Nov. 7, 2009.	Sandalodus sp.? tooth Strata:  Garner (Mingus sh.) Period: Pennsylvanian (c. 304 mya) Location:  Palo Pinto Co., TX.  May 23, 2009.