[Last updated 28 Jan 2024]

Phylum: Brachiopoda

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.