Smithsonian miscellaneous collections . COLLENIA UNDOSA Walcott 138 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 64 DESCRIPTION OF PLATE 14 PAGE Collenia undosa Walcott. (See pi. 13) 113 Figs, i and 2. ( natural size.) Side and top view of a group ofspecimens that have apparently grown together, forming asolid mass. They are embedded in the red Spokane S. National Museum. Catalogue No. 60709. Locality 400b: Algonkian : Spokane shales; 8 miles ( km.)west of White Sulphur Springs, Meagher County, Montana. SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 64, NO. 2, COLLENIA UNDOSA W
Smithsonian miscellaneous collections . COLLENIA UNDOSA Walcott 138 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 64 DESCRIPTION OF PLATE 14 PAGE Collenia undosa Walcott. (See pi. 13) 113 Figs, i and 2. ( natural size.) Side and top view of a group ofspecimens that have apparently grown together, forming asolid mass. They are embedded in the red Spokane S. National Museum. Catalogue No. 60709. Locality 400b: Algonkian : Spokane shales; 8 miles ( km.)west of White Sulphur Springs, Meagher County, Montana. SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 64, NO. 2, COLLENIA UNDOSA Walcott I40 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 64 DESCRIPTION OF PLATE 15 PAGE Collenia occidentale (Dawson) in Fig. I. (Natural size.) Photograph of a thin-section showing portionsof two fragments. U. S. National Museum, Catalogue (X 8.) Enlargement of the lower, smaller fragment in fig. , 4. (Natural size.) Photographs of two thin-sections occurringin the same stratum of rock as that represented by fig. S. National Museum, Catalogue No. , 6. (Natural size.) Natural sections through two turbinate formsof growth. U. S. National Museum, Catalogue Nos. 60710,60711. The specimens represented by figs. 1-6 are from the Algonkian:Chuar terrane; Grand Canyon, Arizona. These figures (1-4) were published as figs. 1-4, plate 23, Bull. America, Vol. 10, 1898, Walcott: Pre-Cambrian fossiliferousformations. Collenia compacta Walcott 112 Fig. 7. (Natural size.) Natural weathered vertical section showingthe club-shaped growth on the left w
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