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Soft cover. Softcovers; ex-library; minor shelfwear; o/w good.

Hardcover. Etat : Very Good. Hardcover; ex-library; in very good condition. This is a heavy volume; extra shipping may be required for priority mail or international orders. Book.

pp. 1253-1300, 18 large microphotos on 4 pls., 9 diagrs., refs. 4to. Plain new wrs.

4to. Pp. 79, numerous microphotos on 40 plates, tables, refs., taxon. index. Paperbound, orig. printed wrappers.

4to. Pp. 815-871, 152 microphotos on 17 pls., 1 sketch map and 12 tabs. in text, refs. 4to. Plain new wrs.

4to. Pp. 653-711, 91 microphotos on 5 pls., 4 figs., refs. Plain new wrs.

Fifteen new species of calcareous nannofossils of probable stratigraphic significance are described here. Several of these - Cyclococcolithus macintyrei, Discoaster neohamatus, Discoaster quintatus, Helicopontosphaera sellii, Micrantholithus procerus, Sphenolithus anarrhopus, Sphenolithus neoabies, Thoracosphaera prolata, and Triquetrohabdulus inversus - are among taxa known to be abundant with wide geographic ranges and thus particularly useful in developing worldwide zonations. This usefulness has been evident during preliminary studies of Deep Sea Drilling Project cores, and naming the taxa, therefore, is important. Other new species - Helicopontosphaera papillata, Leptodiscus larvalis, Pemma snavelyi, Quinquerhabdus colossicus, Syracosphaera formosa, and Syracosphaera labrosa - are presently known only from restricted regions or constitute only a minor part of worldwide assemblages. They, too, may prove useful because they are easily identified and seem to have restricted time ranges. New taxa: Cyclococcolithus macintyrei n. sp., Discoaster neohamatus n. sp., Discoaster quintatus n. sp., Helicopontosphaera papillata n. sp., Helicopontosphaera sellii n. sp., Leptodiscus larvalis n. sp., Micrantholithus procerus n. sp., Pemma snavelyi n. sp., Quinquerhabdus colossicus n. sp., Sphenolithus anarrhopus n. sp., Sphenolithus neoabies n. sp., Syracosphaera formosa n. sp., Syracosphaera labrosa n. sp., Thoracosphaera prolata n. sp., Triquetrohabdulus inversus n. sp. 12 pp., 3 b/w plates, gr. 8. …

M. 40 Taf. u. 1 Abb. 79 S. OBr. (Univ. of Kansas / Paleontol. contrib. 51). = Protista H. 2. Sprache: Englisch 0 gr.