07304 - Top Rare 1.81 Inch Fulgurite ("Petrified lightning") Collected in Algeria Goniatites Prognathodon Curii

Prognathodon Curii

Impressive and rare authentic example of Spinosaurid (Spinosaurus or Sigilmassasaurus) dinosaur cervical vertebra bone

the United Kingdom

SQUAMATA Oppel

Agoudal 31°59

07304 - Top Rare 1.81 Inch Fulgurite ("Petrified lightning") Collected in Algeria Goniatites Prognathodon CuriiFulgurites are natural tubes, clumps, or masses of sintered, vitrified, and or fused soil, sand, rock, organic debris and other sediments that can form when lightning discharges into ground. They can therefore be referred to as petrified lightning. They are classified as a variety of the mineraloid lechatelierite, although their absolute chemical composition is dependent on the physical and chemical properties of the usually granular crystalline