Class: Rhynchonellata
Order: Rhynchonellida
Family: Wellerellidae
| Pennsylvanian Period: (click for Cretaceous Period) | ||
Wellerella osagensis Strata: Graham Period: Pennsylvanian Loc: Jack Co., TX Sept. 26, 2010. |
Wellerella osagensis [+]Strata: Graham Period: Pennsylvanian Loc: Jack Co., TX Feb. 20, 2010. |
Wellerella osagensis Strata: Graham Period: Pennsylvanian Loc: Jack Co., TX Nov. 5, 2011. |
??
 Strata: Graham (Finis Shale) Period: Pennsylvanian Loc: Jack Co., TX Sept 27, 2008. |
??  Strata: Palo Pinto Period: Pennsylvanian Loc: Palo Pinto Co., TX April 19, 2008. |
|
Class: Rhynchonellata
Order: Rhynchonellida
Family: Leiorhynchidae
Leiorhynchus rockymontanum Strata: Mingus - Garner Period: Pennsylvanian (c. 303 mya) Loc: Palo Pinto Co., TX Feb. 2, 2008. |
Class: Strophomenat
Order: Productida
Family: Rugosochonetidae
| Chonetinella occurs 307-315 mya. | ||
Chonetinella sp. (formerly Chonetina) Strata: Placid Shale? Period: Pennsylvanian (c. 300 mya) Loc: Palo Pinto Co., TX July 1, 2007. |
Chonetinella sp. (formerly Chonetina) Strata: Mineral Wells (Salesville Sh?) Period: Pennsylvanian (c. 300 mya) Loc: Palo Pinto Co., TX May 8, 2010. |
Chonetinella sp. (formerly Chonetina) Strata: Mineral Wells (Salesville Sh?) Period: Pennsylvanian (c. 300 mya) Loc: Palo Pinto Co., TX Dec. 22, 2005. |
| Neochonetes is a long ranging genus. | ||
Neochonetes sp.
 Strata: Graham (Finis Shale) Period: Pennsylvanian Loc: Jack Co., TX Oct. 9, 2010. |
Neochonetes sp. Strata: Harpersville? Period: Pennsylvanian/Perm? Loc: Stephens Co., TX Nov. 7, 2009. |
|
| Mesolobus occurs 311-318 mya. | ||
Mesolobus sp. Strata: Mineral Wells (East Mountain Shale) Period: Pennsylvanian (c. 300 mya) Loc: Palo Pinto Co., TX Dec. 22, 2005. |
||
Class: Rhynchonellata
Order: Athyridida
Family: Athyrididae
Composita subtilita
 Strata: Graham (Finis Shale) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX Sept 27, 2008. |
Composita subtilita Strata: Period: Pennsylvanian (c. 300 mya) Loc: Palo Pinto Co., TX Aug. 8, 2009. |
Cleiothyridina orbicularis
 Strata: Graham (Finis Shale) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX March 20, 2011. |
|
Class: Rhynchonellata
Order: Spiriferida
Family: Elythidae
Phricodothyris perplexa
 Strata: Mineral Wells (Salesville Shale) Period: Pennsylvanian (c. 300 mya) Loc: Palo Pinto Co., TX Dec. 22, 2005. |
Class: Rhynchonellata
Order: Spiriferida
Family: Ambocoeliidae
Crurithyris planoconvexa
 Strata: Graham (Finis Shale) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX Oct. 9, 2010. |
Class: Rhynchonellata
Order: Athyridida
Family: Neoretziidae
Hustedia mormoni Strata: Graham (Finis Shale) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX 27 Sep 2008. |
Hustedia mormoni Strata: Graham (Finis Shale) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX 27 Sep 2008. |
Hustedia mormoni Strata: Palo Pinto Period: Pennsylvanian (c. 300 mya) Loc: Palo Pinto Co., TX 19 April 2008. |
Hustedia sp.
 Strata: Harpersville Fm. Period: Pennsylvanian (c. 300 mya) Loc: Coleman Co., TX 15 April 2023 |
Class: Strophomenata
Order: Productida
Family: Productellidae
Marginifera sp. Strata: Graham (Finis Shale) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX Sept 27, 2008. |
Juresania? and Marginifera (3 smaller) Strata: Thrifty-Graham (Finis Shale) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX Nov. 19, 2005. |
Fimbrinia plummeri
 Strata: Graham (Finis Shale) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX Sept 27, 2008. |
Class: Strophomenata
Order: Productida
Family: Echinoconchidae
Juresania sp. 
 Strata: Placid Shale? Period: Pennsylvanian (c. 300 mya) Loc: Palo Pinto Co., TX July 1, 2007. |
Juresania sp. Strata: Graham (Finis Shale) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX March 20, 2011. |
Juresania sp. 
Strata: Period: Pennsylvanian (c. 300 mya) Loc: Palo Pinto Co., TX Aug. 8, 2009. Roz M. |
Echinaria sp?  Strata: ? Period: Pennsylvanian (c. 300 mya) Loc: Palo Pinto Co., TX Nov. 22, 2008. |
Class: Strophomenata
Order: Orthotetida
Family: Derbyiidae
| There are two species of Derbyia found here but
the smaller D. crassa and larger D. jacksboroensis may all just be D. crassa |
|
Derbyia sp.  Strata: Graham (Finis Shale) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX March 2010. Wes K. |
Derbyia crassa 
[+]Strata: Graham (Finis Shale) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX March 20, 2011. |
Class: Rhynchonellata
Order: Spiriferida
Family: Trigonotretidae
Neospirifer sp.  Strata: Palo Pinto or Wolf Mountain? Period: Pennsylvanian (c. 303 mya) Loc: Palo Pinto Co., TX Aug. 8, 2009. |
Neospirifer sp. Strata: Mineral Wells (Salesville Shale) Period: Pennsylvanian (c. 300 mya) Loc: Palo Pinto Co., TX Dec. 22, 2005. |
Neospirifer sp.
 Strata: Mineral Wells (Salesville) Period: Pennsylvanian (c. 300 mya) Loc: Palo Pinto Co., TX Aug. 12, 2007. |
Neospirifer sp.
brachiopod Strata: Mineral Wells Period: Pennsylvanian (c. 300 mya) Loc: Palo Pinto Co., TX 27 Jan 2024 |
Class: Rhynchonellata
Order: Spiriferinida & Punctospiriferidae
Family: Spiriferellinidae
| Spiriferellina - similar to Punctospirifer but lacks
the
groove on the fold and the rib in the sulcus." |
|
Spiriferellina sp.
 Strata: Graham (Finis Shale) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX Sept 27, 2008. |
|
| "Important features are the many
growth lines (imbricating lamellae) and the number of ribs" |
|
Punctospirifer kentuckyensis
Strata: Graham (Finis Shale) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX Oct. 9, 2010. |
Punctospirifer? 
 Strata: Harpersville Fm. Period: Pennsylvanian (c. 300 mya) Loc: Coleman Co., TX 24 Nov 2011. |
Punctospirifer sp. Strata: Mineral Wells Period: Pennsylvanian (c. 300 mya) Loc: Palo Pinto Co., TX 27 Jan 2007 |
|
Class: Lingulata
Order: Lingulida
Family: Discinidae
| Inarticulate brachiopods - "The inarticulates have no
hinge and no teeth and sockets" - "The shell is usually chitin interlayered with calcium phosphate" |
|
Lingula
sp.
 Strata: Graham (Finis Shale) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX Sept. 26, 2010. |
Lindstroemella or Orbiculoidea??  Strata: Graham (Finis Shale) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX Dec. 19, 2009. |
Trigonoglossa nebrascensis
 Strata: Graham (Finis Shale) Period: Pennsylvanian (c. 300 mya) Loc: Jack Co., TX Sept. 27, 2014. |
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