Asteroidea & Ophiura Seastar Plate 61f35d9b8cdbcf025e05a8d919097523 Kyanite is also known as

Kyanite is also known as disthene

This handcrafted Navajo cuff bracelet is made from sterling silver

Optical Calcite is a birefringent crystal

the diversity of meticulously well-preserved organisms is incredible

stoneware and other carvings for centuries

Asteroidea & Ophiura Seastar Plate 61f35d9b8cdbcf025e05a8d919097523 Kyanite is also known asSea levels were at their highest levels of the Paleozoic Era during the Ordovician Period and saw water temperatures of more than 110 F. These conditions allowed marine life to flourish and led to wide diversification. It is during this time that sea stars (from the class Asteroidea) and brittle stars (from the class Ophiuroidea) diverged. Sea stars, or starfish, tend to have legs that are wider and more connected to one another. They had tubular feet