Fossil Finds: Jacksboro Spillway (Finis Shale)
Fossil collectors and researchers alike repeatedly visit this site just northeast of the Texas town of Jacksboro. Similar to the age of Minerals Wells Fossil Park, we again see an ecology that predates the dinosaurs. Pennsylvanian (Upper Carboniferous) Finis Shale, Graham Formation, Jacksboro, Jack County, Texas. Below is a short video about the site as well as a few of the fossil I have found there:
Kingdom: Animalia – Phylum: Porifera (sponges)
Sponge Wewokella
Pennsylvanian (upper Carboniferous)
Mineral Wells Fossil Park, Palo Pinto County, Texas
Kingdom: Animalia – Phylum: Cnidaria (coral)
Horn Coral Lyphophyllidum plummeri
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Kingdom: Animalia – Phylum: Brozoa
Bryzoa Tabulipora (Encrusting)
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Bryzoa Fenestella
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Bryzoa Fenestella in matrix
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Kingdom: Animalia – Phylum: Brachiopoda
Brachiopoda Hustedia mormoni
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Brachiopoda Composita Ovata
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Brachiopoda Rhipidomella carbonaria
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Brachiopoda Eridmatus texanus
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Brachiopoda Kutorginella lasallensis
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Brachiopoda Pulchratia symmetrica
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Brachiopoda Neochonetes acanthophorus
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Brachiopoda Linoproductus prattenianus
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Brachiopoda Crurithyris planoconvexa
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Brachiopoda Spiriferid
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Kingdom: Animalia – Phylum: Mollusca – Class: Bivalve (clams and oysters)
Bivalve Paleyoldia
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Bivalve Palaeoneilo oweni
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Bivalve Paleyoldia
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Bivalve Astartella varica
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Bivalve Myalina
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Kingdom: Animalia – Phylum: Mollusca – Class: Gastropoda (snails)
Snail Amphiscapha subrugosa
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Snail Solensicus typicus
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Snail Soleniscus primigenius
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Snail Trepospira illinoisensis
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Snail Trepospira illinoisensis
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Snail Worthenia tabulata
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Snail Bellerophon
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Kingdom: Animalia – Phylum: Mollusca – Class: Cephalopoda (squid and octopi)
Ammonite (shell fragments)
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Ammonite Metacoceras
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Ammonite Gonioloboceras
Pennsylvanian (Upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Nautiloid Euloxoceras
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Nautiloid Pseudorthoceras
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Nautiloid Shimanskya postremus
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Nautiloid Brachycycloceras
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Kingdom: Animalia – Phylum: Echinodermata – Class: Crinoidea
Crinoid Column
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Crinoid Column Floricyclus
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Crinoid Column Floricyclus
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas
Kingdom: Animalia – Phylum: Arthropoda- Class: Trilobite
I have not found one here yet.
I have a trilobite pygidium of the Palo Pinto roadcut of similar age.
Kingdom: Animalia – Phylum: Chordata- Class: Chrondrichthyes
Shark Tooth
Pennsylvanian (upper Carboniferous)
Finis Shale, Graham Formation, Jacksboro, Jack County, Texas