Accessory Minerals: May include minor amounts of hornblende (in hornblende gabbros)
The unusual chemistry of fossil lake prevented decay and scavenging of dead organisms while millimeter-thick layers of alternating limestone matter slowly accumulated
was marked by cycles of glaciation and the widespread presence of large prehistoric mammals
Such research enriches the broader comprehension of Mesozoic marine ecosystems and the evolutionary trajectories that influenced vertebrate life in deep time
While keeping quartz's natural hardness
1.5" Detailed Cedrelospermum Nervosum Fossil Plant Leaf Eocene Age Green River FM UT Coloborhynchus Accessory Minerals: May include minorLocation: Green River Formation, Uintah County, Utah Weight: 3. 9 Ounces Dimensions: 2. 4 Inches Long, 2. 4 Inches Wide, 0. 8 Inches Thick (Plate) Leaf Dimensions: 1. 5 Inches Long, 0. 3 Inches Wide The item pictured is the one you will receive. Eocene Age 56 million years ago Cardiospermum Fossil Leaf Eocene Herbaceous Vine from the Green River FormationStep back 50 million years with this Cardiospermum fossil leaf, preserved in the Green River