Crinoid Fossil Plate - 2.709" romanglass "Impact of a large earth-crossing

"Impact of a large earth-crossing asteroid would inject about 60 times the object's mass into the atmosphere as pulverized rock

they have not been well preserved and most have rotted away with time

"Tubular Symplectic Inclusions in Olivine from the Fukang Pallasite

and doors flew open

Crinoid Fossil Plate - 2.709" romanglass "Impact of a large earth-crossingCrinoids are an incredible group of aquatic animals that attach themselves to the seafloor and filter feeds with beautiful feathered arms. These creatures are echinoids, an ancient and varied group of life. Crinoids emerged in the fossil record over 541,000,000 years ago and some species still exist to this day. This specimen is a 2. 709" crinoid fossil plate that dates to about 323,000,000 to 331,000,000 years old. It comes from the Bangor Limestone