Smithsonian miscellaneous collections . ional Museum, Catalogue No. (X2.) Cranidium. Note spine on occipital ring. U. S. National Museum. Catalogue No. (X3-) Cranidium. U. S. National Museum, Catalogue specimens represented by figs. 2, 2a-b are from locality 55c,Middle Cambrian: Spence shale member of the Ute formation;about 50 feet ( m.) above the Brigham quartzite, and 2,755 feet( m.) below the Upper Cambrian, in a ravine running up intoDanish Flat from Mill Canyon, about 6 miles ( km.) west-south-west of Liberty and 15 miles ( km.) west of ^l
Smithsonian miscellaneous collections . ional Museum, Catalogue No. (X2.) Cranidium. Note spine on occipital ring. U. S. National Museum. Catalogue No. (X3-) Cranidium. U. S. National Museum, Catalogue specimens represented by figs. 2, 2a-b are from locality 55c,Middle Cambrian: Spence shale member of the Ute formation;about 50 feet ( m.) above the Brigham quartzite, and 2,755 feet( m.) below the Upper Cambrian, in a ravine running up intoDanish Flat from Mill Canyon, about 6 miles ( km.) west-south-west of Liberty and 15 miles ( km.) west of ^lontpelier. BearLake County, Idaho. Bathyuriscus (Poliella) sylla Walcott 354 Fig. 3. (X2.) Cranidium and free cheek. U. S. National No. (X2.) Four thoracic segments and p^gidium. U. S. National Museum, Catalogue No. (X I-5-) Free cheek. U. S. National Museum. Catalogue No. (X2.) Free cheek. U. S. National Museum. Catalogue SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 64, NO. 5, BATHYURISCUS NO. 5 CAMBRIAN TRILOBITES 4I9 Bathyuriscns {Poliella} sylla Walcott—Continued. page 3J. (X3-) Pygidium. U. S. National Museum, Catalogue No. (X3-) A small cranidium showing glabellar furrows. U. S. National Museum, Catalogue No. (X3-) Hypostoma with ears restored in outline. U. S. National Museum, Catalogue No. 62651. The specimens represented by figs. 3, ^a-f are from locality 61 o,Middle Cambrian: Chetang formation; gray shaly limestone inmassive beds; on northeast slope of Chetang Cliffs above ColemanGlacier Creek, 7 miles ( km.) north-northeast in direct line fromsummit of Robson Peak, northwest of Yellowhead Pass, westernAlberta, Canada. Bathyuriscns batis Walcott 337 Fig. 4. (Natural size.) Natural casts of distorted and compressedspecimens in a fine quartzitic sandstone. U. S. NationalMuseum, Catalogue No. (Natural size.) Dorsal shield, broadened by flattening in ma-trix. U. S. National Mus
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