Shark Egg Case (Palaeoxyris prendeli) - Mazon Creek 964c4db65f9489e6f6012b3ec2a0cea1 Cleoniceras cleon

Cleoniceras cleon

fertilizers

thus allowing for a rainbow of colors to be formed

but larger crystals are exceedingly uncommon

This location is known for exceptional quality crystals with great clarity

Shark Egg Case (Palaeoxyris prendeli) - Mazon Creek 964c4db65f9489e6f6012b3ec2a0cea1 Cleoniceras cleonPalaeoxyris 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