Browsing by Author "Haas, Otto, 1887-"
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ItemAcanthoceratid Ammonoidea from near Greybull, Wyoming. Bulletin of the AMNH ; v. 93, article 1(New York : [American Museum of Natural History], 1949) Haas, Otto, 1887- ItemAnnotated faunal list of the Glen Dean Formation of Crane, Indiana. American Museum novitates ; no. 1307(New York City : The American Museum of Natural History, 1946) Haas, Otto, 1887- ItemAn Eocene Aturia from Cyrenaica. American Museum novitates ; no. 1747(New York, N.Y. : American Museum of Natural History, 1955) Haas, Otto, 1887-; King, Robert E. (Robert Evans), 1906- ItemEocene nautiloids of British Somaliland. Bulletin of the AMNH ; v. 99, article 5(New York : [American Museum of Natural History], 1952) Haas, Otto, 1887-; Miller, A. K. (Arthur K.), 1902-; MacFadyen, W. A.; Hunt, John A. (John Anthony)"Some 20 years ago, W.A. Macfadyen and J.A. Hunt collected well over a hundred Tertiary nautiloids from British Somaliland (which had previously yielded only two specimens), and these constitute the basis for this study. All but one of them came from the north central portion of the country. The great majority were secured from the section exposed along the Biyo Gora River at Daban, some 25 kilometers southeast of Berbera. At that place, nautiloids occur in two zones, one in the Lower and one in the Middle Eocene; they are so abundant in the latter that the containing strata have been termed the Nautilus beds. A few sporadic individuals were secured from strata of comparable age at several other localities. Almost all of the forms known from British Somaliland belong in two closely related genera, Cimomia and Deltoidonautilus, but we have in addition a single representative of Aturia (a new species) and a very incomplete specimen that we are referring with question to Eutrephoceras. One species of Cimomia and one of Deltoidonautilus had already been described and named from the country; we are establishing six more of the former genus and four of the latter, and in addition are including discussions (and in some cases illustrations) of fragmentary and/or poorly preserved representatives of both. Figure 1 elucidates the relative abundance and general distribution of all of these forms. The literature contains references to a good many sporadic occurrences of Tertiary nautiloids in various parts of Africa. However, none of the British Somaliland forms seems to belong in species known from elsewhere, and none of the assemblages is similar except in a general way. The closest are perhaps those known from Senegal and Sudan in French West Africa. The fauna of the upper Ranikot series of western India (Sind) is somewhat reminiscent of the only large one known from Somaliland, that of the Nautilus beds at Daban, but the relationship is rather distant. Furthermore, close counterparts of the African faunas under consideration are not known from any of the other continents"--P. 319. ItemIntraspecific variation in, and ontogeny of, Prionotropis woollgari and Prionocyclus wyomingensis. Bulletin of the AMNH ; v. 86, article 4(New York : [American Museum of Natural History], 1946) Haas, Otto, 1887-"Examination of about 450 specimens of Prionotropis woollgari Meek (? non Mantell) and about 40 of Prionocyclus wyomingensis Meek from various localities in the western interior of the United States proves a high degree of both intraspecific variation and ontogenetic changes in these two ammonite species, often quoted and repeatedly used as index fossils but hardly ever thoroughly studied since their establishment. The interaction of both factors causes an almost bewildering diversity of morphologic aspects, particularly in Prionotropis woollgari. Both species are considered polytypic. The original of Meek's (1876, pl. 7) figure 1a, b, is designated lectotype of the typical Prionotropis woollgari Meek. Six varieties: crassa, intermedia, regularis, tenuicostata, praecox, and alata, the last based on the individual figured by Meek (1876) on plate 6, figure 2, and plate 7, figure 1g, h, are separated from the typical form, with P. branneri Dickerson considered a seventh. In addition to Ammonites percarinatus Hall and Meek, Ammonites graysonensis Shumard is also included in the synonymy of Meek's species. The ontogeny of the forma typica as well as of the six new varieties is closely followed with respect to dimensions, length of body chamber and full size attained, whorl section, ornamentation, and sutures. This study shows that intraspecific variation is largely due to differentiation in speed of development. Particularly interesting are sculptural and sutural ontogenies, the former for the appearance, further development, vanishing, and eventual disappearance of the various elements of ornamentation and for its general trend toward diminishing fineness and density, the latter for the trend of the first lateral lobe to change from trifidity to bifidity (and frequently of the second lateral lobe to change simultaneously from bifidity to trifidity). White's (1880) specimens of Prionocyclus wyomingensis are recognized as being typical of this species of Meek's. Two varieties, elegans, based on Whitfield (1880), and robusta, are separated from the typical form, and two large fragments belonging or closely related to this species are discussed as 'incertae sedis.' The ontogeny is studied along the same lines as in Prionotropis woollgari, with similar results, especially as to sutural development. It can be shown that the change of the first lateral lobe from trifidity to bifidity can be achieved in two different ways (orthogenesis?). As both species are genotypes, the differences between them stand for those between their genera. These differences are discussed and found just sufficient to warrant -- by the standards of present taxonomy -- generic separation. The variety praecox of Prionotropis woollgari, however, is somewhat transitional between both genera. Homeomorphies between Albian Pervinquierinae and certain Upper Cretaceous Prionotropidae are exposed and illustrated by several examples, and an attempt is made to point out some sculptural and sutural differences between both groups"--P. 221. ItemLower Cretaceous ammonites from Colombia, South America. American Museum novitates ; no. 2005(New York, N.Y. : American Museum of Natural History, 1960) Haas, Otto, 1887- ItemMesozoic invertebrate faunas of Peru. Part 1, General introduction, Part 2, Late Triassic gastropods from central Peru. Bulletin of the AMNH ; v. 101(New York : [American Museum of Natural History], 1953) Haas, Otto, 1887-; Jenks, William Furness, 1909-; Newell, Norman Dennis, 1909-; Newell Expedition to the Peruvian Andes (1947) ItemNotes on Archimedes. American Museum novitates ; no. 1302(New York City : The American Museum of Natural History, 1945) Haas, Otto, 1887- ItemParacanthoceras wyomingense (Reagan) from the Western Interior of the United States and from Alberta (Ammonoidea). American Museum novitates ; no. 2151(New York, N.Y. : American Museum of Natural History, 1963) Haas, Otto, 1887- ItemA recently acquired Albian ammonite from Angola. American Museum novitates ; no. 1286(New York City : The American Museum of Natural History, 1945) Haas, Otto, 1887-; Nannestad, H. B.; Chapin, James Paul, 1889-1964. ItemRemarks on some Chester Pentremites. American Museum novitates ; no. 1289(New York City : The American Museum of Natural History, 1945) Haas, Otto, 1887-; Dale, William N. ItemRevision of the Jurassic ammonite fauna of Mount Hermon, Syria. Bulletin of the AMNH ; v. 108, article 1(New York : [American Museum of Natural History], 1955) Haas, Otto, 1887- ItemSome abnormally coiled ammonites from the Upper Cretaceous of Angola. American Museum novitates ; no. 1222(New York City : The American Museum of Natural History, 1943) Haas, Otto, 1887-; Washburne, Chester Wesley, 1883-"The fossils from the locality 'S-3' (= '2054'), which has yielded a new species of Axonoceras, a genus hitherto known only from the Maestrichtian Navarro group of Texas, and from 'S-22,' where a species characteristic of the same group (Nostoceras helicinum) has been found, are undoubtedly of Maestrichtian age. The same can be assumed for locality 'E-50' (= '2003'), as Baculites anceps is generally considered a Maestrichtian species (see Roman, 1938, p. 53). the typical, small North American species of of the genus Solenoceras which most resemble S. bembense, new species, from locality '2073' near Bembe occur in the Maestrichtian Navarro group of Texas as well as in the Pierre Shale of Missouri and in the Crosswicks Clay of Delaware, both of which are of Campanian age (see Carter, 1937, pp. 251-256; Stephenson, et al., 1942, correlation chart). Another small Solenoceras, S. miminum [sic] from Madagascar, is of late Maestrichtian age. Locality '2073' has thus to be considered Maestrichtian or Upper Campanian, and the same may be true of the undetermined ammonites, dealt with in the appendix, from the nearby locality '2004' (= '30'). The age of the present assemblage, on the whole, is, therefore, recognized to be Maestrichtian and perhaps in part also Campanian. In consequence, the so-called Teba formation of Angola, thought by Haughton (1924, p. 82) to correspond to the Campanian, but probably also Lower Senonian, seems also to include strata of Maestrichtian age. Paleogeographically, the evidence of the presence of a neritic sea in Angola, previously (Spath, 1921b, p. 56; Haas, 1942a, p. 21) established for the time extending from the Albian to the Campanian, can now be farther expanded to include also the Maestrichtian. This result was anticipated by Spath as early as 1922 (p. 155), when he mentioned 'the introduction ... of Maestrichtian ammonoids as far as Angola.' Particularly interesting is the close affinity of the present assemblage with the Navarro fauna of Texas; it strongly suggests for the Maestrichtian epoch an open sea connection between the neritic seas of Texas and Angola"--P. 16. ItemSome Albian desmoceratid and lytoceratid Ammonoidea from Angola. American Museum novitates ; no. 1561(New York : American Museum of Natural History, 1952) Haas, Otto, 1887- ItemSome Upper Cretaceous ammonites from Angola. American Museum novitates ; no. 1182(New York City : The American Museum of Natural History, 1942) Haas, Otto, 1887-; Washburne, Chester Wesley, 1883- ItemSupplementary notes on the ammonoid genus Dunveganoceras. American Museum novitates ; no. 1490(New York : American Museum of Natural History, 1951) Haas, Otto, 1887- ItemAn Upper Albian ammonite from Mount Taylor country, New Mexico. American Museum novitates ; no. 1223(New York City : The American Museum of Natural History, 1943) Haas, Otto, 1887-; Frey, George X. ItemThe Vernay Collection of Cretaceous (Albian) ammonites from Angola. Bulletin of the AMNH ; v. 81, article 1.(New York : The American Museum of Natural History, 1942) Haas, Otto, 1887-; Lang, Herbert, 1879-1957.; Vernay Angola Expedition (1925)