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Dense Conglomerates and Proofs of Subsidence. Flora of the Lower Molasse. American Character of the Flora. Theory of a Miocene Atlantis. Lower Miocene of Belgium. Rupelian Clay of Hermsdorf near Berlin. Mayence Basin. Lower Miocene of Croatia. Oligocene Strata of Beyrich. Lower Miocene of Italy. Lower Miocene of England. Hempstead Beds. Bovey Tracey Lignites in Devonshire. Isle of Mull Leaf-Beds.
Professor Beyrich confines the term "Miocene" to those strata which agree in age with the faluns of Touraine, and he has proposed the term "Oligocene" for those older formations called Lower Miocene in this work. In the hills of which the Superga forms a part there is a great series of Tertiary strata which pass downward into the Lower Miocene.
The Vanessa above figured retains, says Heer, some of its colours, and corresponds with Vanessa Hadena of India. Professor Beyrich has made known to us the existence of a long succession of marine strata in North Germany, which lead by an almost gradual transition from beds of Upper Miocene age to others of the age of the base of the Lower Miocene.
Shaded horizontal lines: Eocene formations. The strata next in order in the descending series are those which I term Eocene. When this map was constructed I classed as the newer part of the Eocene those Tertiary strata which have been described in the last chapter as Lower Miocene, and to which M. Beyrich has given the name of Oligocene.
Professor Beyrich has described a mass of clay, used for making tiles, within seven miles of the gates of Berlin, near the village of Hermsdorf, rising up from beneath the sands with which that country is chiefly overspread. This clay is more than forty feet thick, of a dark bluish-grey colour, and, like that of Rupelmonde, contains septaria. An elaborate description has been published by Dr.
The third fauna agrees with the Upper Silurian of the same author. These numbers have since been almost doubled by subsequent investigations in the same country. Fossils of the lowest Fossiliferous Beds in Bohemia, or "Primordial Zone" of Barrande. Paradoxides Bohemicus, Barr. Conocoryphe striata. Syn. Conocephalus striatus, Emmrich. One-half natural size. Agnostus integer, Beyrich.
Omphyma turbinatum, Linn. Sp. Pseudocrintes bifasciatus, Pearce. Calymene Blumenbachii, Brong. Sphaerexochus mirus, Beyrich; coiled up. Homalonotus delphinocephalus, Konig. The crustaceans are represented almost exclusively by Trilobites, which are very conspicuous, 22 being peculiar.
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