. Smithsonian miscellaneous collections . 1. Marpolia aequalis Walcott 2. Wahpia mimica Walcott 3. Dalyia nitens Walcott 4. Dalyia racemata Walcott SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 87, NO. 6, PL. 66. DALYIA RACEMATA Walcott NO. 5 MIDDLE CAMBRIAN ALGAE 257 DESCRIPTION OF PLATE 56 PAGE racemata Walcott (See pi. 55) 238 Fig. I. (X2.) A group of stems with branches and whorls enlargedon a smaller scale than the specimens represented byfigs, la, lb, and if. U. S. National Museum, CatalogueNo. 35419. \a, lb. (X3-) Specimens illustrating variation in the mode ofbranching. The center
. Smithsonian miscellaneous collections . 1. Marpolia aequalis Walcott 2. Wahpia mimica Walcott 3. Dalyia nitens Walcott 4. Dalyia racemata Walcott SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 87, NO. 6, PL. 66. DALYIA RACEMATA Walcott NO. 5 MIDDLE CAMBRIAN ALGAE 257 DESCRIPTION OF PLATE 56 PAGE racemata Walcott (See pi. 55) 238 Fig. I. (X2.) A group of stems with branches and whorls enlargedon a smaller scale than the specimens represented byfigs, la, lb, and if. U. S. National Museum, CatalogueNo. 35419. \a, lb. (X3-) Specimens illustrating variation in the mode ofbranching. The center upper stipe of fig. la results,I think, from the pressing together of a number of shortbranchlets. This tendency is shown in fig. ic. U. Museum, Catalogue Nos. 35420, 35421. ic. (X4-) Specimen with closely grouped branchlets on the ter-minal whorls which suggest the specimen illustrated byfig. 4, pi. 55. U. S. National Museum, Catalogue The specimens represented on this plate are all from locality 35k,Middle Cambrian: Burgess shale member of the Stephen forma-tion; on the west slope of the ridge between Mount Field andWapta Peak, 1 mile ( km.) northeast of Burgess Pass, aboveFi
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Keywords: ., bookauthorsm, bookcentury1800, bookdecade1860, booksubjectscience
