In Depth Eriocampa is a genus of sawfly that is still alive today, but is also known from several extinct species that seem to have been common in North America during the Eocene, though one species, E. oligocenica, is recorded as being alive during the Oligocene of France. At the time of writing there are … Read more
In Depth Pseudosiobla is a genus of extinct sawfly that lived in North America during the Eocene. Further Reading - Some fossil arthropods from Florissant, Colorado. - Bulletin of the American Museum of Natural History 23:605-616. - T. D. A. Cockerell - 1907. - New Phytophagous Hymenoptera from the Tertiary of Florissant, Colorado. - Bulletin … Read more