Fossil Sponge - Astraeospongia meniscus - 419,000,000 Years Old rockinaboxtethys Every piece is a unique

Every piece is a unique pattern of fossil formation

was a byproduct of the mammalian explosion of diversity in the Eocene

60" Woolly Rhinoceros Tooth recovered from Siberia

126–113 Ma

may have settled in place year-round

Fossil Sponge - Astraeospongia meniscus - 419,000,000 Years Old rockinaboxtethys Every piece is a uniqueSponges 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