Phylum: Mollusca (Mollusks)

Class:  Cephalopoda
Subclass:  Nautiloidea
(coiled nautiloids) 

Pennsylvanian Period: (click for Cretaceous Period)
Roz's nautiloid Strata: Graham (Finis shale) Period: Pennsylvanian (c. 300 mya) Loc: Wise Co., TX. 28 Jan 2007
Domatoceras sculptile (formerly Metacoceras sculptile) Strata: Graham  (Finis shale) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX.  Dec. 19, 2009.	?? Strata: ? Period: Pennsylvanian (c. 300 mya) Loc: Wise Co., TX.  April 19, 2008.
Metacoceras sp. Strata: Graham  (Finis shale member) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX. March 20, 2011.

Class:  Cephalopoda
Subclass: Nautilodea 
(straight-shelled / non-coiled nautiloids)

Order: Orthocerida Mooreceras sp.?  Strata: Graham  (Finis shale member) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX.	Order: Oncocerida Poterioceras curtum Strata: Graham  (Finis shale member) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX.  Dec. 19, 2009.	Order: Orthocerida Brachycycloceras sp.?  Strata: Graham  (Finis shale member) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX.  Sept. 27, 2008.
Order: Orthocerida Brachycycloceras sp.?  [+] Strata: Graham  (Finis shale member) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX.  Sep. 27, 2014.	Order: Orthocerida Brachycycloceras sp.?  [+] Strata: Graham  (Finis shale member) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX.  Nov. 18, 2012.