Pennsylvanian Era
Pennsylvanian Era (250-300 Million Years Ago)
Fossil finds from Mineral Wells, Jacksboro, Brownwood, Brady and Marathon
Trilobite Molt
Size 1/8 Inch
Trilobite Pygidium
Size 1/8 inch
Trilobite
Size 1/8 Inch
Nautiloid Tainoceras
Size 3 Inches
Nautiloid Agathiceras ciscoense
Size 1 1/4 inch
Goniatite Eoasianites anguloumbilicatus
Size 1 1/4 Inch
Goniatites Gonioloboceras sp.
Size 2 inches
Goniatite Pennoceras curtum
Size 1 1/4 inch
Nautiloid Stenopoceras sp.
Size 1 inch
Cephalopod Bactrites finisensi
Size 1 inch
Cephalopod Orthoceras
Size 1 1/2 inch
Cephalopod Euloxoceras greenei
Size 1 inch
Cephalopod Pseudorthoceras sp.
Size 2 inches
Cephalopod Poterioceras subllipticum
Size 1 1/2 inch
Trilobite Genal Spine
Size 1/2 inch
Scaphopod Plagioglypta canna
Size 2 inches
Scaphopod Plagioglypta annulostriata
Size 1/2 inch
Scaphopod Proentalium sublaeve
Size 1/4 inch
Echinoid Plates
Size 1/16 and 1/4
Echinoid Hash Plate Pronechinus
Size 1 Inch
Echinoid Plate
Size 1/4 Inch
Echinoid Plates Archeocidaris
Size 1 inch
Echinoid Plate Pronechinus
Size 1/16 inch
Echinoid Spine
Size 1 inch
Echinoid Spine
Size 1/2 inch
Echinoid Plate Archeocidaris
Size 1/8 inch
Echinoid Spine
Size 1/2 inch
Crinoid Spine (regenerating)
Size 1/4 inch
Crinoid Graffhamicrinus Basal Cup
Size 1 inch largest
Crinoid Spine
Size 1 inch
Crinioid Delecrinus vulgatus
Size 2 inches
Crinoid Arms
Size 1/4 inch
Crinoid Basal Cup
Size 1/4 inch
Crinoid Basal Cup
Size 1/2 Inch
Crinoid Basal Cup Paragassizocrinus tarri
Size 1/2 Inch
Crinoid Columnal
Size 1/4 Inch
Crinoid Allegecrinus bassleri
Size 1/8 inch
Crinoid Basal Cup
Size 1/4 inch
Crinoid Columnal
Size 1/4 inch
Crinoid Columnal
Size 1/4 inch
Crinoid Columnal
Size 1/4 inch
Crinoid Columnal
Size 1/8 inch
Crinoid Basal Cup
Size 1/2 inch
Coral Palaeacis sp,
Size 1 inch
Coral Zaphrentis gibsoni
Size 1 1/4 inch
Coral Lophophyllidium spinosum
Size 2 Inches
Coral Michelinia sp.
Size 1 Inch
Coral Lophophyillidium proliferum
Size 1 Inch
Coral Striatopora plummeri
Size 2 Inches
Coral Cladochonus fragilis
Size 1 1/4 Inch
Shark Tooth Petalodus
Size 1 inch
Gastropod Cymatospira montfortianus
Size 1/2 inch
Gastropod Pseudozygopleura scitula
Size 1/4 inch
Gastropod Pharkidonotus percarinatu
Size 1/2 inch
Gastropod Spirscala pagoda
Size 1/4 Inch
Gastropod Strobelus
Size 1/2 Inch
Gastropod Phymatopleura sp.
Size 1/2 inch
Gastropod Euphemites enodus
Size 1/4 inch
Gastropod Euphemites blaneyanus
Size 1/4 inch
Gastropod Bellerophon graphicus
Size 1/2 inch
Gastropod Meekospira peracuta
Size 1/2 Inch
Gastropod Trepospira discoidalis
Size 1 Inch
Gastropod Goniasma
Size 1 Inch
Gastropod Glabrocingulum grayvillense
Size 1 Inch
Gastropod Straparolles sp.
Size 1 Inch
Gastropod Worthenia tabulata
Size 1 1/2 Inch
Gastropod Royalella swallowiana
Size 1/4 inch
Gastropod Donaldina stevensana
Size 1/2 inch
Gastropod Soleniscus regularis
Size 1/2 inch
Gastropod Euomphalus
Size 1 3/4 inch
Brachiopod Neochontes
Size 1/2 inch
Brachiopod Marginifera sp.
Size 1 inch
Brachiopod Neospirifer
Size 1 1/2 Inch
Brachiopod Wellerella
Size: 1 Inch
Brachiopod Punctospirifer
Size 1/4 Inch
Brachiopod Rhipidomella carbonaria
Size: 1/2 inch
Brachiopod Meekella sp.
SIze 11/4 inch
Brachiopod Husteda sp.
Size 1/4 inch
Brachiopod Chonetinella rostrata
Size 1/8 inch
Brachiopod Eridmatus texanus
Size 1 inch
Brachiopod Quadrochonetes geronticus
Size 1/8 inch
Brachiopod Chonetinella verneuiliana
Size 1/2 Inch
Brachiopod Crurithyris planoconvexa
Size: 1/2 Inch
Brachiopod Hystriculina texana
Size: 1 Inch
Brachiopod Juresenia sp.
1 1/2 Inch
Brachiopod Composita subtilita
1 Inch
Brachiopod Acanthospirifer opimus
Size 1 Inch
Brachiopod Echinoconchus semipunctatus
Size 1 Inch
Bivalve Pteronites percuata
Size 1 Inch
Bivalve Derbyia ciscoense
Size 1/8 inch
Bivalve Conularia
Size 1/2 inch
Bivalve Derbyia jacksboroensis
Size 3 inches
Brachiopod Linoproductus cora
Size 2 inches
Bivalve Edmondia nebrascensis
Size 1 Inch
Bivalve Polidevcia arata
Size 1/4 Inch
Bivalve Nuculopsis sp
Size 1 inch
Bivalve Astartella vera
Size 1 inch
Bivalve Meekopinna americana
Size 1/2 inch
Bivalve Yoldia gabra
Size 1 inch
Bivalve Orthomyalina subquadrata
Sze 3 inches
Bivalve Acanthopecten
Size 1/2 inch
Bivalve Allorisma terminale
Size 2 inches
Sponge Girtycoelia
Size 1/4 inch
Sponge Wewekkola
Size 1 1/2 inch
Sponge Amblysiphonella prosseri
Size 1/4 inch
Bryozoan Fenestella sp,
Size 1/2 inch
Bryozoan Rhombopora sp,
Size 1 inch
Bryozoan Fistulipora sp.
Size 1/2 inch
Bryozoan Synocladia biserialis
Size 1 inch
Bryozoan Tabulipora sp.
Size 2 inches
Bryozoan Tabulipora carbonaria
Size 1/2 inch
Fern Pinnule Marattialean sp.
Size 3/4 inch
Plant Seed Hexaloba finisensia
Size 1 inch
Wood Unknown
Sixe 1 inch