User:Abyssal/Prehistory of North America/DYK/2

... that a fossil of the extinct monitor lizard Saniwa preserves cartilage, scales, and even a wind pipe?
... that Adolf Carl Noé challenged disbelief in the possibility of North American coal balls (example pictured) by presenting a wheelbarrow full of them?
... that the extinct stingray Heliobatis (pictured) has been found with up to three stings on its tail?
... that Leurospondylus ultimus was so named as it was originally thought to be the last occurrence of a plesiosaur?
... that Cliff Palace (pictured) is the largest cliff dwelling at Mesa Verde National Park, a World Heritage Site in Colorado?

... that Cottonwood Limestone from Kansas was used to build landmarks like the Kansas State Capitol, Great Overland Station, and Bill Snyder Family Football Stadium (pictured)?
...that the exposed bedrock of the Duluth Complex was formed from magma emitted when the North American plate began to split apart in the Midcontinent Rift?
... that the collection of the Arizona Mining and Mineral Museum includes a specimen of native copper that is 8 ft (2.4 m) long?
... that the extinct wasps Dryinus grimaldii and Dryinus rasnitsyni are distinguishable by the modified claws on their front legs?
... that the Miocene maple Acer latahense is most similar in appearance to the living Honshū maple?