. The ancient life-history of the earth; a comprehensive outline of the principles and leading facts of palaeontological science. Paleontology. THE UPPER SILURIAN PERIOD. 127 Trimerellids; the old and at the same time modern Li?igtdcBj Discmce^ and Cranice; together with many species oi Atrypa. Fig. 68. — Upper Silurian Brachiopods. aa, Leptocoelia plano-convexa, Clinton Group, America ; b b', Rkynchonella neglecta, Clinton Group, America; c, Rhynchonella cuneata, Niagara Group, America, and Wenlock Group, Britain; d d', Orthis elegan- tula, Llandeilo to Ludlow, America and Europe; e e', Atryp
. The ancient life-history of the earth; a comprehensive outline of the principles and leading facts of palaeontological science. Paleontology. THE UPPER SILURIAN PERIOD. 127 Trimerellids; the old and at the same time modern Li?igtdcBj Discmce^ and Cranice; together with many species oi Atrypa. Fig. 68. — Upper Silurian Brachiopods. aa, Leptocoelia plano-convexa, Clinton Group, America ; b b', Rkynchonella neglecta, Clinton Group, America; c, Rhynchonella cuneata, Niagara Group, America, and Wenlock Group, Britain; d d', Orthis elegan- tula, Llandeilo to Ludlow, America and Europe; e e', Atrypa hemispherica, Clinton Group, America, and Llandovery and May Hill Groups, Britain ;//', Atrypa co7igesta, Clinton Group, America ; gg', Orthis Davidsoni, Clinton Group, America. (After Hall^ Billings, and the Author.) (fig. 68, <?), Leptoccelia (fig. 68, a), Rhyncho7iella (fig. 68, b^ c), Meristella (fig. 69, a, e,f), Athy7-is, Hetzia, Chonetes, & 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
