User:Abyssal/Prehistory of North America/DYK/27

... that the paleobotanists David P. Penhallow and Chester A. Arnold both published studies on the extinct water-fern Azolla primaeva?
... that this rockshelter (pictured) may have been inhabited more than ten thousand years ago?
... that Carnufex is an extinct relative of crocodiles that lived 231 million years ago in Carolina?
... that out of about 20,000 Clarno Formation fossils, only 5 were from the extinct dogwood Cornus clarnensis?
... that the Queenston Formation (outcrop pictured) is used by the ceramic industry in the Canadian province of Ontario and for natural gas production in the U.S. state of New York?

... that the fossil ant genus Archiponera is known from a single pair of fossils described in 1930?
... that the extinct species Agulla mineralensis is the first North American snakefly to be described from Neogene fossils?
... that archaeologist Vance Haynes challenged the right of Native Americans to rebury Kennewick Man—skeletal bone fragments about 9,000 years old—which Haynes said should be studied further?
... that Acer castorrivularis is one of five extinct maples from the Eocene Beaver Creek flora in Montana?
... that the extinct Cretaceous wasp family Plumalexiidae is known from only the two Plumalexius type specimens found in New Jersey amber?