Browsing by Author "Puritan-American Museum of Natural History Expedition to Western Mexico (1957)"
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Item The eastern Pacific species of Niso (Mollusca, Gastropoda). American Museum novitates ; no. 2218(New York, N.Y. : American Museum of Natural History, 1965) Emerson, William K.; Puritan-American Museum of Natural History Expedition to Western Mexico (1957)Item Results of the Puritan-American Museum Expedition to Western Mexico. 4, The scorpions. American Museum novitates ; no. 1903(New York, N.Y. : American Museum of Natural History, 1958) Gertsch, Willis John, 1906-; Puritan-American Museum of Natural History Expedition to Western Mexico (1957)Item Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 1, General account. American Museum novitates ; no. 1894(New York, N.Y. : American Museum of Natural History, 1958) Emerson, William K.; Puritan-American Museum of Natural History Expedition to Western Mexico (1957)"The 'Puritan' left Newport, California, on March 5 and returned, after logging 4032 miles, on June 6, 1957. During this three-month period, 50 different collecting localities were visited, with the result that 183 marine stations ... 31 fossil invertebrate stations, and 81 sediment stations were established. In addition to the large collections of Recent and fossil invertebrates procured, more than 450 mammal specimens and over 400 herpetological specimens were taken ..."--P. 14.Item Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 10, Marine mammals from the coasts of Baja California and the Tres Marías Islands, Mexico. American Museum novitates ; no. 1992(New York, N.Y. : American Museum of Natural History, 1960) Van Gelder, Richard George, 1928-; Puritan-American Museum of Natural History Expedition to Western Mexico (1957)Item Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 11, Pleistocene invertebrates from Cer[r]alvo Island. American Museum novitates ; no. 1995(New York, N.Y. : American Museum of Natural History, 1960) Emerson, William K.; Puritan-American Museum of Natural History Expedition to Western Mexico (1957)Item Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 12, Shell middens of San José Island. American Museum novitates ; no. 2013(New York, N.Y. : American Museum of Natural History, 1960) Emerson, William K.; Puritan-American Museum of Natural History Expedition to Western Mexico (1957)Item Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 13, Ascophoran Cheilostomata (Bryozoa) of the Gulf of California. American Museum novitates ; no. 2053(New York, N.Y. : American Museum of Natural History, 1961) Soule, John D.; Puritan-American Museum of Natural History Expedition to Western Mexico (1957)"In the Puritan collection of 75 species of ascophoran Bryozoa, four are described as new species. Twenty-six species are reported here for the first time from the Gulf of California, among which are three species that are also additions to the Panamic fauna. Of the 71 previously described species, 9 per cent are cosmopolitan, 46 per cent have been recovered in both temperate and tropical waters, 4 per cent were confined to warm temperate waters, and 41 per cent are presently known from only tropical waters. The bryozoan material in the Puritan collection was collected from the littoral zone, at depths ranging from intertidal to a maximum of 50 fathoms"--P. 62.Item Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 14, A zoogeographic analysis of some shallow-water Foraminifera in the Gulf of California. Bulletin of the AMNH ; v. 123, article 5(New York : [American Museum of Natural History], 1962) Brenner, Gilbert Jay, 1933-; Puritan-American Museum of Natural History Expedition to Western Mexico (1957)"The Carmen Island area appears to be of significant ecologic importance with respect to the Foraminifera in the Gulf of California. Both northern and southern faunas show increased rates of change in this region. Squires (1959, p. 395) shows that a gradual diminution of hermatypic coral fauna occurs in the Gulf from El Pulmo (latitude 23 26' N.) to South San Lorenzo (latitude 28 35' N.) north of Salinas Bay, Carmen Island. At South San Lorenzo kelp replaces Porites, and Pavona and Pocillopora were not found. This area also marks the approximate northern limit of several tropical forms that were found in the present collection, of which the frequencies range as high as 65 per cent, and average 15 per cent of those of the southern populations. The distinctive character of the northern populations is due not only to the absence of these significant tropical species, but also to the greater abundance of several previously mentioned subtropical species, such as Eponides hannai, Elphidium gunteri, and Cibicides concentricus. A graphic analysis of the southern and northern populations shows a greater decrease in the number of species in the Carmen Island area (samples 41-49). With respect to the Foraminifera, the Gulf, therefore, is believed to support a tropical fauna as far north as the twenty-sixth parallel (Carmen Island area). To the north the Gulf supports a more or less thinned-out, warm-water fauna which has most of its species in common with the southern population, but with a greater frequency of some typical subtropical forms. Colder minimum temperatures to the north are presumed to be the main factor influencing this distribution. In general the Buliminidae and Cassidulinidae dominated the deeper-water samples; Cassidulina subglobosa and Bulimina denudata are typical examples. A study of the geographical affinities of the foraminiferal population of the Gulf indicates that the number (27.3%) of species that are endemic to the eastern Pacific warm water is larger than the number that are Amphi-American (20.2%), although the difference is not so great as that shown in a similar study made on crabs and echinoderms of the eastern Pacific (Eckman, 1953, p. 40). The percentage of circumtropical species in the Foraminifera (30.9%) was larger than in the megafauna (2%). This fact may be attributed to the greater capacity of the Foraminifera to be carried by ocean currents for great distances. Only a small percentage (4.3%) of the Foraminifera show affinities with the Indo-Pacific region. Depth is considered to be the main factor that influences the foraminiferal number of the samples. The deeper samples usually contain the highest F.N. values, except for a few bioclastic areas supporting prolific populations. The writer wishes to suggest further directions of study that might lead to the solution of important zoogeographical problems in the area. Foraminiferal populations can be studied in Recent samples collected between San Diego, California, and Cape San Lucas, at the tip of Baja California. With methods similar to those of this study, it may be possible to delineate more accurately the northern limits of the Panamic (tropical) Province. Late Tertiary samples taken throughout the extent of Baja California can be statistically analyzed, and the geographic ranges of the Foraminifera can be compared with those in this study. Such studies might indicate significant shifts in the tropical and subtropical fauna and aid in the interpretation of broad paleoecological problems"--P. 290.Item Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 15, The littoral balanomorph Cirripedia. American Museum novitates ; no. 2084(New York, N.Y. : American Museum of Natural History, 1962) Ross, Arnold.; Puritan (Schooner); Puritan-American Museum of Natural History Expedition to Western Mexico (1957)Item Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 16, The Recent mollusks, Gastropoda, Conidae. American Museum novitates ; no. 2112(New York, N.Y. : American Museum of Natural History, 1962) Emerson, William K.; Old, William E.; Puritan (Schooner); Puritan-American Museum of Natural History Expedition to Western Mexico (1957)Item Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 17, The Recent mollusks, Gastropoda, Cypraeacea. American Museum novitates ; no. 2136(New York, N.Y. : American Museum of Natural History, 1963) Emerson, William K.; Old, William E.; Puritan (Schooner); Puritan-American Museum of Natural History Expedition to Western Mexico (1957)Item Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 18, Cyclostomata, Ctenostomata (Ectoprocta), and Entoprocta of the Gulf of California. American Museum novitates ; no. 2144(New York, N.Y. : American Museum of Natural History, 1963) Soule, John D.; Puritan-American Museum of Natural History Expedition to Western Mexico (1957)"Tabulation (see table 1) of the bryozoans, Ectoprocta, and Entoprocta in the present collections reveals the numerical superiority of the suborder Cheilostomata, with 131 species. The Anasca Cheilostomata have 56 (Soule, 1959); the Ascophora Cheilostomata, 75 (Soule, 1961). The present report describes 15 species of the suborder Cyclostomata, 13 species of the suborder Ctenostomata, and one representative of the phylum Entoprocta. Thus the total number of species of bryozoans in the Puritan collection is 160. Further analysis of this Puritan collection reveals that there are 59 species reported from the Gulf of California for the first time. In addition, the Puritan collection adds 13 species to the Panamic faunal list, contains four species previously unknown to the waters of the eastern Pacific, and, lastly, adds nine new species, all in the suborder Cheilostomata, to the phylum. With the exception of the new species, all the bryozoans in the Puritan collection have been reported from faunal provinces other than the Panamic province. Additional collections and study will be needed to demonstrate instances of endemic species in the Gulf of California. At the completion of Osburn's study of the eastern Pacific bryozoans (1950-1953), 133 species were recorded from the Gulf of California. With the additional material provided by the Puritan-American Museum expedition, the bryozoan fauna of this region now numbers 200 species. In a recent paper (Soule, 1960), a brief account was given of the distribution and faunal affinities of the bryozoan fauna of both the Gulf of California and the Pacific coast of Baja California. It was based in part on Osburn's 1950-1953 monograph and in part on the study of the Puritan collection that was in progress at that time. This paper indicated, with regard to the bryozoans, that in its faunal affinities, the Gulf of California is decidedly Panamic in character. With the study of the Puritan collection now complete, the faunal affinity picture is not appreciably changed. As can be seen in table 1, the fauna is strongly Panamic, followed in decreasing order by representatives of the eastern Pacific (exclusive of the Panamic faunal province), the West Indies, and the Indo-Pacific. The study of the distributional pattern of the bryozoans of the Puritan collection within the Gulf of California reveals three areas, only slightly revised by additional material from the earlier study (Soule, 1960). As shown by the map (fig. 1), the southern one-third of the Gulf of California supports a bryozoan fauna that is distinctly tropical ... It is continuous with a region on the Pacific coast of Baja California ... In the Gulf of California, immediately north of the tropical area, is a central zone of transition ... On the Pacific coast of Baja California, there is a similar zone of transitional type ... In the Gulf of California, the remaining 300 linear miles north of the transitional zone possesses a fauna that can be referred to as subtropical ... A third zone is present on the Pacific coast of Baja California, which differs substantially from the northern area of the Gulf of California. Here, except for major embayments such as Scammon's Lagoon, is found a warm temperate fauna ... This zone extends from Point Eugenia northward above the political boundary between Baja California Norte and California, to meet the cool temperate waters at Point Conception, California"--P. 28-29.Item Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 19, The Recent mollusks, Gastropoda, Strombacea, Tonnacea, and Cymatiacea. American Museum novitates ; no. 2153(New York, N.Y. : American Museum of Natural History, 1963) Emerson, William K.; Old, William E.; Puritan-American Museum of Natural History Expedition to Western Mexico (1957)Item Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 2, Notes on reptiles and amphibians from the Pacific coastal islands of Baja California. American Museum novitates ; no. 1895(New York, N.Y. : American Museum of Natural History, 1958) Zweifel, Richard George, 1926-; Puritan-American Museum of Natural History Expedition to Western Mexico (1957)Item Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 20, The Recent mollusks, Gastropoda, Harpidae, Vasidae, and Volutidae. American Museum novitates ; no. 2202(New York, N.Y. : American Museum of Natural History, 1964) Emerson, William K.; Puritan (Schooner); Puritan-American Museum of Natural History Expedition to Western Mexico (1957)Item Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 3, The terrestrial mollusks. American Museum novitates ; no. 1899(New York, N.Y. : American Museum of Natural History, 1958) Jacobson, Morris K.; Zweifel, Richard George, 1926-; Emerson, William K.; Puritan-American Museum of Natural History Expedition to Western Mexico (1957)Item Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 5, Pliocene and Pleistocene megafossils from the Tres Marías Islands. American Museum novitates ; no. 1940(New York, N.Y. : American Museum of Natural History, 1959) Hertlein, Leo George, 1898-1972.; Emerson, William K.; Puritan-American Museum of Natural History Expedition to Western Mexico (1957)Item Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 6, Anascan Cheilostomata (Bryozoa) of the Gulf of California. American Museum novitates ; no. 1969(New York, N.Y. : American Museum of Natural History, 1959) Soule, John D.; Puritan-American Museum of Natural History Expedition to Western Mexico (1957)"Fifty-six species of Bryozoa Anasca have been identified in the present collection from the Gulf of California. Three are believed to be new species, and two are new subspecies. Twenty-one species are added to the faunal list of the area. Of the 51 previously described species identified in this collection, many of which are well known and widely distributed, it is interesting to note that 65 per cent have have a geographical distribution that includes both temperate and tropical waters throughout the world; 8 per cent were found only in cool and warm temperate waters; 8 per cent were found to be restricted to warm temperate waters; and 19 per cent are known to be confined to the tropical waters. Within the Gulf of California, none of the species with a worldwide distribution restricted to the tropics was found north of Pulpito Point, Baja California, with the majority ranging from Coronados Island southward to Mazatlán. The bathymetric range of the Bryozoa in the collection is from intertidal to a maximum deph of 50 fathoms, well within the confines of the littoral zone. Fifty-three species were represented in both the eulittoral and sublittoral subdivisions of the zone. Three were found solely within the sublittoral at a depth of from 40 to 50 fathoms. Sixteen species were recovered from depths that did not exceed 26 fathoms, restricting them to the eulittoral zone"--P. 50.Item Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 7, Corals and coral reefs in the Gulf of California. Bulletin of the AMNH ; v. 118, article 7(New York : [American Museum of Natural History], 1959) Squires, Donald Fleming.; Puritan-American Museum of Natural History Expedition to Western Mexico (1957)Item Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 8, A new Antrozous (Mammalia, Vespertilionidae) from the Tres Marías Islands, Nayarit, Mexico. American Museum novitates ; no. 1973(New York, N.Y. : American Museum of Natural History, 1959) Van Gelder, Richard George, 1928-; Zweifel, Richard George, 1926-; Plimpton, Oakes.; Puritan-American Museum of Natural History Expedition to Western Mexico (1957)