. Smithsonian miscellaneous collections . CHOIA RIDLEYI Walcott SMITHSONIAN MISCELLANEOUS COLLECTIOr VOL. 67, NO. 8, PL. 75. 1. Choia utahensls Walcott 2. Choia carterl Walcott NO. 6 MIDDLE CAMBRIAN SPONGIAE 349 DESCRIPTION OF PLATE 75 PAGE Choia utahensis Walcott 295 Fig. 1. (Natural size.) Weathered specimen on the surface of shalylimestone. The fine spicules are nearly all gone, and thelarge ones much damaged. U. S. National Museum, Cata-logue No. locality 3y, Middle Cambrian: about 2,150 feet ( m.)above the Lower Cambrian and 2,250 feet ( m.) below theUpper Cambrian in
. Smithsonian miscellaneous collections . CHOIA RIDLEYI Walcott SMITHSONIAN MISCELLANEOUS COLLECTIOr VOL. 67, NO. 8, PL. 75. 1. Choia utahensls Walcott 2. Choia carterl Walcott NO. 6 MIDDLE CAMBRIAN SPONGIAE 349 DESCRIPTION OF PLATE 75 PAGE Choia utahensis Walcott 295 Fig. 1. (Natural size.) Weathered specimen on the surface of shalylimestone. The fine spicules are nearly all gone, and thelarge ones much damaged. U. S. National Museum, Cata-logue No. locality 3y, Middle Cambrian: about 2,150 feet ( m.)above the Lower Cambrian and 2,250 feet ( m.) below theUpper Cambrian in the shaly limestones forming id of the Marjumlimestone, miles (4 km.) east of Antelope Springs in ridge eastof Wheeler Amphitheater, House Range, Millard County, Utah. Choia carteri Walcott (see pis. 72 and 73) 292 Fig. 2. (X6.) Lower side of a specimen with many short irregularlyarranged spicules matted down on the radiating S. National Museum, Catalogue No. locality 35k, Middle Cambrian: Burgess shale member ofthe Stephen formation; on the west slope of the ridge betweenMount Field and Wap
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Keywords: ., bookauthorsm, bookcentury1800, bookdecade1860, booksubjectscience
