3 1 
Cidaris , Hemicidaris , Pygaster and Cly peas ter, the two latter be- 
ing allied to Clypeus or “ sand dollar ” of the present day. 
Brachiopods, mostly of the sloping shoulder type, are illus- 
trated by the genera Terebratula and Rhynchonella. Among bi- 
valve mollusks the introduction of the modern genus of Ostrea , or 
oyster, is notable. A large number of beautifully preserved re- 
mains from the lithographic slate beds of Solenhofen are shown. 
They include some of the earlier Insects, and Crustacea resem- 
bling the modern lobster and king crab, Limulus , Alger. 
Case G. — Ammonites, remarkable for size and complexity of 
suture. Many specimens are shown, including the genera Cardio- 
ceras , Arietites , Grammoceras. Some of the Anetites are 3 feet 
in diameter. The sutures of some specimens have been painted 
to bring out the markings. Many specimens of Nautilus and 
allied Cephalopods. 
Case 7 .—Belemnites. These are allied to modern Cuttle- 
fishes and Squids. The only part of the animal usually preserved 
is the internal bone, or pen. Two restorations of the original ani- 
mal are shown. 
Cases 8A, B, C, D. — The Dinosaurs , or land reptiles, are 
illustrated by bones and vertebrae of the Teleosaur and casts 
showing various parts of the Megalosaur. Pterosaurs , or flying 
reptiles, are illustrated by imprints of wings of the Rhampho- 
rhynchus , an animal not unlike the bat in appearance, and by casts 
showing remains of Pterodactyls . 
Walls of Hall 59 and Pedestals 1, 2 and 3.— Re- 
mains and restorations of Ichthyosaur , Pliosaur and Plesiosaur , 
great marine reptiles of the age. The two former often reached 
a length of 40 feet, had stout bodies, short necks, enormous eyes, 
long teeth and fin-like tails and paddles. The latter were their 
organs of locomotion. The huge eyes and teeth indicate that 
they were predatory and voracious animals, their food being prob- 
ably fishes and other reptiles. 
The Plesiosaur was a smaller and more graceful animal, with 
long neck, small head and powerful paddles, but in habits similar 
to the preceding. All had many fish-like characters. 
Cases 8E, F, G and 9. — Fossils of the Cretaceous period. 
Case 8E. — Here we find the first of modern plants, or Angio- 
sperms. Imprints of leaves are shown, many being modern genera, 
