User:Abyssal/Prehistory of North America/DYK/43


 * ... that multiple Leptocleidus skeletons have been found preserved as gemstone quality opal over the course of the history of plesiosaur research?
 * ... that the extinct Eocene maples Acer hillsi and Acer stewarti are distinguished by how inflated the nut is?
 * ... that fossil specimens of the extinct scorpionfly family Dinopanorpidae, which includes Dinopanorpa and Dinokanaga, sometimes have preserved dark with light to clear color patterning?
 * ... that the recently discovered Eocypselus rowei may be ancestral to both hummingbirds and swifts?
 * ... that excavations in 1887 and 1919 on Bussell Island uncovered a number of small, round graves of early inhabitants of present-day Tennessee, United States, circa 3000 BC to 1000 CE?
 * ... that the largest known ovules produced by any non-flowering seed-plant came from the Medullosales (fossilized leaves pictured), an order of extinct seed ferns?
 * ... that Hyptia deansi is the only fossil ensign wasp described from Mexican amber?
 * ... that researchers have identified the pictured life form which no longer lives on this planet?
 * ...that the cultures of the Western Mexico shaft tomb tradition not only considered dogs to be soul guides for the dead, but a major source of protein as well?
 * ... that anthropologist Therkel Mathiassen described Comer's Midden as the only substantial find of pure Thule culture in Greenland?