Cretaceous Sea Urchin Pendant Necklace Size:Small but some small pieces from

but some small pieces from that time remained in chondritic meteorites like Allende

"A triumph

Kapton foil is very light and can easily escape

glass-topped riker display box measuring 4 1/2" x 3 1/2"

Cretaceous Sea Urchin Pendant Necklace Size:Small but some small pieces fromAbove: Artist's Concept of the Tethys Sea during the Cretaceous (Source: Mini Museum) Ancient sea urchins, small and spiny creatures, have existed for millennia. These echinoids first appeared in oceans 450 million years ago, where they fed on algae and sponges. Their flexible spines purpose was two fold: to protect against predators and allow for the slow crawl towards the urchins next meal. Buried for millions of years, their fossils appear in many