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Re: Significant dates in dino history
- 1858 Hadrosaurus foulkii formally described by Joseph Leidy
-1859 Generic name of Astrodon assigned by Christopher Johnston (a dentist!)
to teeth found in a Maryland iron mine.
-1865 Astrodon johnstoni formally described by Joseph Leidy
-1888 Pleurocoelus altus
P. nanus (probably an immature form of P. altus)
Allosaurus medius (nomen dubium) = ("Dryptosaurus" medius)
All of the above were described by Marsh from material found in the
iron ore and clay mines of Maryland.
And also from the same area;
-1911 Creosaurus potens (Lull) cf. "Dryptosaurus" potens (nomen dubium)
-1920 Archaeornithomimus affinis (Gilmore)
1980's- present New and interesting material collected by yours truly, Peter
Kranz and others .Stay tuned!
Thomas R. Lipka