39 
(JrWg ^F*~F/abe//aria, leaves of a palm which grew in the / 
Eocene epoch near Green River, Wyoming. Also, leaves of Acer, 
or maple, and other modern plants. 
Numinulites — These are abundant and characteristic fossils of 
this period. They are shells of a Rhizopod, and in Europe and 
Africa form limestones many thousand feet in thickness. 
Case lO. — Among univalve mollusks many modern types 
will be recognized — Turritella, Natica, Cerithium, Strombus,2iY\d 
others. 
Fishes belonging to the order of Teleosts, or osseous fishes, are 
illustrated by many specimens from the Green River beds — Prisca- 
rara, Diplomystiis, etc. These are of modern types and related 
to the perch, herring and the like. 
vSharks of enormous size also existed. Teeth of the Carcha- 
rodon are common fossils, and specimens may be seen in this case. 
Floor of Hall 30, Pedestal 13. — A restoration showing 
the jaws of Carcharodon and within these, for comparison, the 
jaws of a modern shark. The ancient Carcharodon was probably 
50 to 70 feet in length. 
Pedestal 1^.— Restoration of Hadrosaurns from the Upper 
Cretaceous of New Jersey. This was a huge land reptile, 28 feet 
in length, allied to the Iy;uanodon, It was probably a vegetable 
feeder, and able to stand and walk after the manner of birds. 
Pedestal 14. — Cast cf the skull of a Mastodon from the 
Miocene beds in the Sewalik Hills, India. Behind it, a femur of 
the same animal, and head and femur of Diprotodon (cast). 
Pedestal 15. — Head of the Dinotherinm (cast). This was 
a huge animal with a skull three feet long, herbivorous, and re- 
markable for two long tusk-like teeth, projecting downwards. It 
combined the characteristics of the elephant, hippopotamus, tapir, 
and dugong. A cast of its femur may be seen near by. 
Pedestal 10. — A restoration of the skull of the Elephas 
ganesa^ one of seven species of elephants existing during the 
Miocene epoch in India. It is remarkable for the length of its 
tusks, those of this specimen being ten feet long. 
Peflestal 17. — Restoration of a skeleton of Dinoceras, from 
Wyoming. This was a five-toed Ungulate of elephantine size, but 
having no proboscis, and probably like the rhinoceros in its 
habits. It is marked by three pairs of protuberances on its skull 
