Chapter XIX—JURASSIC GROUP.—PURBECK BEDS AND OOLITE.

The Purbeck Beds a Member of the Jurassic Group. — Subdivisions of that

Group. — Physical Geography of the Oolite in England and France. —

Upper Oolite. — Purbeck Beds. — New Genera of fossil Mammalia in the

Middle Purbeck of Dorsetshire. — Dirt-bed or ancient Soil. — Fossils of

the Purbeck Beds. — Portland Stone and Fossils. — Kimmeridge Clay. —

Lithographic Stone of Solenhofen. — Archæopteryx. — Middle Oolite. —

Coral Rag. — Nerinæa Limestone. — Oxford Clay, Ammonites and

Belemnites. — Kelloway Rock. — Lower, or Bath, Oolite. — Great Plants

of the Oolite. — Oolite and Bradford Clay. — Stonesfield Slate. —

Fossil Mammalia. — Fuller’s Earth. — Inferior Oolite and Fossils. —

Northamptonshire Slates. — Yorkshire Oolitic Coal-field. — Brora Coal.

— Palæontological Relations of the several Subdivisions of the Oolitic

group.

The Student's Elements of Geology · 第 19 / 47 章