Lower Peninsula, 1873-1876 : accompanied by a geological map . PLATE L I I. Zaphrentis gigantea. Corniferous limestone, Falls of the Ohio. PLATE LI I. PLATE L I I I. Upper tier, Zaphrentis prolifica. Corniferous limestone. Lower tier, seven specimens in the left-hand group, Zaphrentis exigua. Cornife-rous limestone from various right-hand specimens, Zaphrentis ungula Corniferous limestoneFalls of the Ohio. Largest central specimen, Zaphrentis compressa, from Falls of the Ohio. PLATE LUI ^^^^1^^^^^ ^^^^^^^^^ PLATE L I V. Upper tier, Amplexus SHU>rARDi. Niagara group, Michigan,
Lower Peninsula, 1873-1876 : accompanied by a geological map . PLATE L I I. Zaphrentis gigantea. Corniferous limestone, Falls of the Ohio. PLATE LI I. PLATE L I I I. Upper tier, Zaphrentis prolifica. Corniferous limestone. Lower tier, seven specimens in the left-hand group, Zaphrentis exigua. Cornife-rous limestone from various right-hand specimens, Zaphrentis ungula Corniferous limestoneFalls of the Ohio. Largest central specimen, Zaphrentis compressa, from Falls of the Ohio. PLATE LUI ^^^^1^^^^^ ^^^^^^^^^ PLATE L I V. Upper tier, Amplexus SHU>rARDi. Niagara group, Michigan, Iowa, and Tennessee. Lower tier, Yandelli. Corniferous limestone, Michigan and Falls of the Ohio. PLATE LIV
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectgeology, bookyear1876
