. The ancient life-history of the earth; a comprehensive outline of the principles and leading facts of palaeontological science. Paleontology. 234 HISTORICAL tionships of which appear to be with some of the living Butterflies of Tropical America. Coming to the Mollusca, the Folyzoans, numerous and. Tig. 164. -Eryon arctiforniis, a "Long-tailed Decapod," from the Middle Oolites (Solenhofen Slate). beautiful as they are, niust be at once dismissed; but the Brachiopods deserve a moment's attention. The Jurassic Lamp-shells (fig. 165) do not fill by any means such a pre-
. The ancient life-history of the earth; a comprehensive outline of the principles and leading facts of palaeontological science. Paleontology. 234 HISTORICAL tionships of which appear to be with some of the living Butterflies of Tropical America. Coming to the Mollusca, the Folyzoans, numerous and. Tig. 164. -Eryon arctiforniis, a "Long-tailed Decapod," from the Middle Oolites (Solenhofen Slate). beautiful as they are, niust be at once dismissed; but the Brachiopods deserve a moment's attention. The Jurassic Lamp-shells (fig. 165) do not fill by any means such a pre- dominant place in the marine fauna of the period, as in many Palaeozoic deposits, but they are still individually numerous. The two ancient genera Leptcena (fig. 165, a) and Spirifera (fig. 165, ^), dating the one from the Lower and the other from the Upper Silurian, appear here for the last time upon the scene, but they have not hitherto been recognised in deposits later than the Lias. The great majority of the Jurassic Bi-achiopods, however, belong to the genera Terebi^ahda (fig. 165, f, e^ f) and Rhy?icho}ieUa (fig. 165, d), both of which are represented by living forms at the present day. The Terebt-atii/ce, in par- ticular, are yqij abundant, and the species are often confined to special horizons in the series. Remains of Bivalves i^Lamellib7'aiichiatd) are very numerous. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Nicholson, Henry Alleyne, 1844-1899. New York, A. L. Fowle
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Keywords: ., bookcentur, bookdecade1870, booksubjectpaleontology, bookyear1876
