Pennsylvanian Era 

Pennsylvanian Era  (250-300 Million Years Ago)   

Fossil finds from Mineral Wells, Jacksboro, Brownwood, Brady and Marathon

Trilobite Ameura sp.

Trilobite Ditomopyge scitula

Trilobite Ditomopyge sp.

Shark Petalodus ohioensis 

Shark Deltodus angularis 

Shark Petalodus ohioensis 

Nautiloid Tainoceras sp.

Nautiloid Brachycycloceras sp.


Nautiloid Tainoceras sp.

Goniatites Gonioloboceras sp.

Goniatite Uddenites sp.

Goniatite Pennoceras curtum

Nautiloid Stenopoceras sp.

Goniatite Eoasianites anguloumbilicatus 

Goniatite Vidrioceras uddeni 

Goniatite Peritrochia sp,

Goniatite Gastrioceras listeri 

Unknown Goniatite

Cephalopod Bactrites finisensi

Cephalopod Pseudorthoceras sp.

Cephalopod Euloxoceras greenei

Cephalopod Pseudorthoceras sp.

Cephalopod Moroceras sp.

Cephalopod Poterioceras subllipticum

Echinoid Pronechinus sp. 

Echinoid Plate Pronechinus


Echinoid Archeocidaris sp. 

Echinoid Archeocidaris sp. Spine

Echinoid Archeocidaris Plate

Unknown Echinoid Spine

Echinoid Mouthpart

Echinoid Spine

Echinoid Spine

Crinoid Delocrinus vulgatus 

Crinoid Graffhamicrinus Basal Cup

Crinoid Arm Cluster

Crinoid Basal Cup

Crinoid Calyx


Crinoid Calyx Paragassizocrinus tarri

Crinoid Allegecrinus bassleri 


Crinoid Calyx

Crinoid Calyx

Crinoid Calyx Paramphicrinus 

Crinoid Calyx

Crinoid Calyx


Crinoid Column

Crinoid Column

Crinoid Column

Crinoid Column

Crinoid Columnal

Crinoid Columnal

Crinoid Columnal

Size 1/4 inch

Crinoid Columnal 

Size 1/8 inch

Crinoid Columnal

Size 1/4 inch

Crinoid Columnal

Crinoid Columnal

Crinoid Columnal

Crinoid Spine

Crinoid Primibrachial axillary 

Crinoid Segment 

Conularid Conularia sp.

Fern Pinnule Marattialean sp.

Plant Seed Hexaloba finisensia

Coral Zaphrentis gibsoni

Coral Lophophyillidium profundum

Coral Palaeacis sp.

Coral Lophophyllidium spinosum

Coral Michelinia sp.

Coral Lophophyillidium proliferum

Coral Striatopora plummeri

Coral Caninia torqia

Coral Cladochonus fragilis

Gastropod Cymatospira montfortianus 

Gastropod Pseudozygopleura scitula

Gastropod Pharkidonotus percarinatus

Gastropod Spirscala pagoda 

Gastropod Strobeus sp.

Gastropod Phymatopleura  sp.

Gastropod Euphemites enodus

Gastropod Euphemites  blaneyanus

Gastropod Bellerophon graphicus

Gastropod Meekospira peracuta

Gastropod Trepospira discoidalis 

Gastropod Goniasma

Gastropod Glabrocingulum sp.

Gastropod Euconospira turbiniform

Gastropod Glabrocingulum wannense

Gastropod Glabrocingulum grayvillense 

Gastropod Worthenia tabulata

Gastropod Straparollus sp.

Gastropod Royalella swallowiana

Gastropod Donaldina stevensana

Gastropod Soleniscus regularis

Rostrochonch Apotocardium sp.

Brachiopod Neochonetes granulifer

Brachiopod Punctospirifer kentuckyensis

Gastropod Euphemites vittatus

Brachiopod Neochonetes acanthophorus 

Brachiopod Cleiothyridina orbicularis 

Brachiopod Neospirifer 

 Brachiopod Unknown Underside valve

Brachiopod Wellerella osagensis

Brachiopod Rhipidomella carbonaria

Brachiopod Husteda mormoni 

Brachiopod Meekella sp.

Brachiopod Chonetinella rostrata

Brachiopod Neochonetes 

Brachiopod Eridmatus texanus

Brachiopod Chonetinella  verneuiliana 

Brachiopod Crurithyris planoconvexa

Brachiopod Hystriculina texana

Brachiopod Parajuresania nebrascensi

Brachiopod Composita subtilita

Brachiopod Acanthospirifer opimus

Brachiopod Echinoconchus semipunctatus 

Brachiopod Orbiculoidea missouriensis

Brachiopod Cancrinella boonensis 

Brachiopod Derbyia crassa 

Brachiopod Kozlowskia splendens

Brachiopod Orbiculoidea capuliformis

Brachiopod Echinaria sp. 

Bivalve Derbyia jacksboroensis 

Brachiopod Linoproductus cora

Bivalve Edmondia nebrascensis 

Bivalve Polidevcia arata

Bivalve Nuculopsis sp

Bivalve Astartella vera

Bivalve  Pteronites percuata

Bivalve Yoldia gabra

Bivalve Orthomyalina subquadrata

Bivalve Acanthopecten sp.

Bivalve Allorisma terminale 

Sponge Girtycoelia sp.

Sponge Wewekkola sp.

Sponge Amblysiphonella prosseri

Bryozoan Fenestella sp,

Bryozoan Fistulipora incrustans

Bryozoan Rhombopora  sp,

Bryozoan Synocladia biserialis


Bryozoan Tabulipora carbonaria

Size 1/2 inch

Bryozoan Tabulipora sp.

Scaphopod Plagioglypta canna

Scaphopod Proentalium sublaeve

Scaphopod Plagioglypta annulostriata

Foraminifera Fusilinid

Foraminifera Fusilinid

Foraminifera Fusilinid