Fossil Sponge - Astraeospongia meniscus - 419,000,000 Years Old film " ~ Naturalist John Muir

" ~ Naturalist John Muir (1838-1914)

logarithmic pattern it had in life is clearly visible in this incredible display piece

dating to 1

This particular specimen is an Acheulean stone chopper

These specimens are carefully wrapped and shipped in sturdy cartons

Fossil Sponge - Astraeospongia meniscus - 419,000,000 Years Old film " ~ Naturalist John MuirSponges 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