User:Abyssal/Portal:Carboniferous/DYK/2

... 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 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 griffenfly genus Bohemiatupus inhabited peat-mires?
... that Okmulgee State Park (pictured) in Oklahoma is one of only a few places in the world where the fossil coral Gymnophyllum wardi is found?
... that the type specimen of the extinct whip scorpion Graeophonus carbonarius was originally identified as a species of dragonfly?