In the Austrian Alps the Trias terminates upwards in an extraordinary series of fossiliferous beds, replete with marine fossils. Sir Charles Lyell gives the following table of these remarkable deposits:-- _Strata below the Lias in the Austrian Alps, in descending order._ / Grey and black limestone, with calcareous | marls having a thickness of about 50 | feet. Among the fossils, Brachiopoda 1. Koessen beds. | very numerous; some few species common (Synonyms, Upper | to the genuine Lias; many peculiar. St Cassian beds of < _Avicula contorta, Pecten Valoniensis_, Escher and Merian.) | _Cardium Rhoeticum, Avicula_ | _inoequivalvis, Spirifer Münsteri_, | Dav. Strata containing the above fossils | alternate with the Dachstein beds, lying \ next below. / White or greyish limestone, often in beds | three or four feet thick. Total thickness | of the formation above 2000 feet. Upper | part fossiliferous, with some strata 2. Dachstein beds. < composed of corals (_Lithodendron_.) | Lower portion without fossils. Among the | characteristic shells are _Hemicardium_ | _Wulfeni, Megalodon triqueler_, and \ other large bivalves. / Red, pink, or white marbles, from 800 to | 1000 feet in thickness, containing more | than 800 species of marine fossils, for 3. Hallstadt beds | the most part mollusca. Many species of (or St Cassian). < _Orthoceras_. True _Ammonites_, | besides _Ceratites_ and | _Goniatites, Belemnites_ (rare), | _Porcellia, Pleurotomania, Trochus_, \ _Monotis salinaria_, &c. / A. Black and grey \ Among the fossils 4. A. Guttenstein beds. | limestone 150 feet | are _Ceratites_ B. Werfen beds, base | thick, alternating | _cassianus_, of Upper Trias? | with the underlying | _Myacites_ Lower Trias of < Werfen beds. > _fassaensis_, some geologists. | B. Red and green | _Naticella_ | shale and sandstone, | _costata_, &c. \ with salt and gypsum./