Fossil Sponge - Astraeospongia meniscus - 419,000,000 Years Old rome Known to geology as the

Known to geology as the Green River formation

leaving behind striking ribbons of iron-nickel alloys known as a Widmanstätten pattern

they may remain adhered to the acrylic top

Above: Front of Specimen Card

"What hath God wrought

Fossil Sponge - Astraeospongia meniscus - 419,000,000 Years Old rome Known to geology as theSponges are sessile filter feeders that thrive across the world's oceans. First appearing nearly 600 million years ago, sponges are the earliest complex lifeforms on the planet. This specimen is a complete 1. 5 2" Astraeospongia meniscus sponge fossil, preserved in beautiful detail. It was recovered on private land in Tennessee and dates to the Silurian Period over 419,000,000 years ago. Each specimen comes complete with an informational card that