Petrobrasiella venata Troelsen & Quadros 1971
Mooreville Formation, Demopolis Core Hole 2, Noxubee County, Mississippi, USA
Age: Campanian
Light Source: Polarized (top view)
Mooreville Formation, Demopolis Core Hole 1, Noxubee County, Mississippi, USA
Age: Campanian
Scanning Electron Micrograph: Magnification 6,000x (lateral view)