Fossil Sponge - Astraeospongia meniscus - 419,000,000 Years Old rockinaboxbrittlestar This was based on their

This was based on their similar body shape and ecological roles

The rounded nodules present in the cluster owe their formation to small clumps of matter like sand the mineral formed around

For thousands of years

Each bracelet comes with a 2" extender chain and a padded display box

Tired of giving him coffee mugs over and over

Fossil Sponge - Astraeospongia meniscus - 419,000,000 Years Old rockinaboxbrittlestar This was based on theirSponges 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