This is an absolutely outstanding Block of Green River Insects. Included are a small mosquito, a Beetle, 3 other insects and numerous more bits and parts.
They are Eocene in age, 50 Million years old from the Green River Formation in Colorado.
This formation is known for the insect fossils and leaves coming from that area. The fossilization is exceptional for these small invertebrates.
This one comes complete in this Glass Topped leatherette collectors case 6 x 8 inches.
The photograph in the frame is an enlargement of the actual insect inside the case.
This is the specimen you will receive.