User:Abyssal/Prehistory of North America/DYK/10

...that J. Harlan Bretz's theories on the origins of the Channeled Scablands started a forty year debate between neocatastrophist and uniformitarianist geologists?
... that the extinct Protosialis casca is one of only two known alderflies from the West Indies?
... that the extinct fern species Osmunda wehrii was named in honor of Northwest school painter and amateur paleobotanist Wesley C. Wehr?
... that the fossil pelican Pelecanus schreiberi from North Carolina was possibly the largest species of pelican ever?
... that the fossil ant Aphaenogaster praerelicta is entombed in amber with three flies, two springtails, and a wasp?

... that the extinct sweat bee genus Oligochlora contains six species all known from the Dominican amber deposits on Hispaniola?
... that Deicke and Millbrig bentonite layers in eastern United States were formed by huge volcanic eruptions?
... that the oldest known member of the mayfly family Neoephemeridae is the Eocene species Neoephemera antiqua?
... that fossils of the extinct reptile Acallosuchus were found in a cigar box in 1983?
... that the ancient city of Tikal (pictured) in Guatemala was one of the most powerful kingdoms of the ancient Maya civilization?