Texas Devil's Toenail Oyster
Jurassic-Cretaceous
About Texas Devil's Toenail Oyster
The Texas Devil's Toenail Oyster is a mollusk fossil dating to the Jurassic-Cretaceous. Devil's Toenail Oyster is a realistic Texas fossil profile built around curved Gryphaea oyster common in marine clays and chalky beds. In this state, success usually comes from learning red beds, chalk cuts, and dry creek gravels, then timing runoff, reservoir drawdown, surf cuts, or road work that exposes fresh fossil-bearing rock instead of hunting blindly.
“According to TroveRadar, Texas Devil's Toenail Oyster fossils from the Jurassic-Cretaceous are found across Texas. TroveRadar's field database catalogs 696+ fossil entries for identification and collection guidance.”
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Fossil collecting rules in Texas vary by land status and fossil type. Common invertebrate fossils may be collectible on some public lands, but vertebrate fossils, protected park units, tribal lands, and cultural sites require a much higher level of care and often a permit. This is especially relevant in dinosaur tracks, shark teeth, and petrified wood.
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Location: Sam Houston National Forest
National Forest • Seasonal edible mushrooms, Common invertebrate fossils in float
Location: Davy Crockett National Forest
National Forest • Seasonal edible mushrooms, Common invertebrate fossils in float
Location: Angelina National Forest
National Forest • Seasonal edible mushrooms, Common invertebrate fossils in float
Location: Big Thicket National Preserve
National Preserve • Site-specific opportunities, Historic landscape clues
Identification Tips
- ●hooked lower valve
- ●thick shell
- ●gray marl matrix
- ●Check red beds, chalk cuts, and dry creek gravels
Where Found
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