Fossil Shark Egg Case (Palaeoxyris prendeli) - Mazon Creek Labradorite Labradorite is in the feldspar

Labradorite is in the feldspar family of minerals along with moonstone and sunstone

the Woolly Mammoths hair was actually black

a Zuni artist will work strictly with Turquoise

and other shark egg cases were discovered roughly 175 years ago and because of their association with plants material in Mazon Creek concretions they were initially classified as plants

but these “iron rocks” would not melt

Fossil Shark Egg Case (Palaeoxyris prendeli) - Mazon Creek Labradorite Labradorite is in the feldsparPalaeoxyris sp. and other shark egg cases were discovered roughly 175 years ago and because of their association with plants material in Mazon Creek concretions they were initially classified as plants. Not all researchers agreed, and only years later was the relationship with modern forms of spiral shark egg capsules established. These long, narrow, spindle shaped fossils have surfaces marked by weak spiral lines in a helix. At least 9 species of