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Now showing items 6011-6030 of 6097

Variation and population structure of the tourmaline sunangel, Heliangelus exortis exortis (Aves, Trochilidae). American Museum novitates ; no. 2811

Bleiweiss, Robert. (New York, N.Y. : American Museum of Natural History, 1985)

"The nominate form of the polytypic Andean hummingbird the tourmaline sunangel, Heliangelus exortis exortis, exhibits dramatic variation in a female polychromatism of throat iridescence within and among populations that ...
Variation and selection in the cervical central articulations of living turtles. Bulletin of the AMNH ; v. 94, article 9

Williams, Ernest E. (Ernest Edward) (New York : [American Museum of Natural History], 1950)
Variation in and distribution of lizards of western Mexico related to Cnemidophorus sacki. Bulletin of the AMNH ; v. 117, article 2

Zweifel, Richard George, 1926- (New York : [American Museum of Natural History], 1959)

"The lizards of the genus Cnemidophorus related to C. sacki occupying the region from southern Sonora to western Jalisco and Colima, Mexico, are studied with respect to variation and distribution. With the use of the ...
Variation in and distribution of the unisexual lizard, Cnemidophorus tesselatus. American Museum novitates ; no. 2235

Zweifel, Richard George, 1926- (New York, N.Y. : American Museum of Natural History, 1965)

"Cnemidophorus tesselatus is a species of lizard in which males are virtually absent. Hence, reproduction presumably is parthenogenetic. Variation of the species as a whole is similar to that of bisexual forms, but samples ...
Variation in dental structures of the Florida mouse, Peromyscus floridanus. American Museum novitates ; no. 2351

Wolfe, James L.; Layne, James Nathaniel. (New York, N.Y. : American Museum of Natural History, 1968)

"Variation in the development of the mesoloph and frequency of occurrence of the mesostyle, mesostylid, and ectostylid on the first and second molars were studied in four populations of the Florida mouse, Peromyscus ...
Variation in Pacific Trachurops crumenophthalmus. American Museum novitates ; no. 815

Nichols, John T. (John Treadwell), 1883-1958. (New York City : The American Museum of Natural History, 1935)
Variation in the deterioration of fossil resins and implications for the conservation of fossils in amber. (American Museum novitates, no. 3734)

Bisulca, Christina.; Nascimbene, Paul C.; Elkin, Lisa.; Grimaldi, David A. (American Museum of Natural History., 2012-02-23)

The deterioration of fossil resins (crazing, cracking, and darkening) was investigated by comparing the effects of one year of accelerated aging--specifically intensive exposure to light, heat, and fluctuating humidity, ...
Variation in the scincid lizard Lipinia noctua and notes on other Lipinia from the New Guinea region. American Museum novitates ; no. 2676

Zweifel, Richard George, 1926- (New York, N.Y. : American Museum of Natural History, 1979)

"Variation of color pattern and scutellation of Lipinia noctua (Lesson) is described, with emphasis on populations of the New Guinea region. The considerable individual and geographic variation seen in L. noctua and the ...
Variation of two characters in Bufo fowleri and Bufo americanus. American Museum novitates ; no. 1343

Blair, Albert Patrick. (New York City : The American Museum of Natural History, 1947)
The variations and affinities of the dwarf boas of the genus Ungaliophis. American Museum novitates ; no. 2340

Bogert, Charles M. (Charles Mitchill), 1908-1992. (New York, N.Y. : American Museum of Natural History, 1968)

"Relatively small members of the family Boidae known to attain maximum over-all dimensions of 760 mm., with short prehensile tails comprising 0.85 to 0.95 per cent of total length. Trunk and tail slightly compressed, head ...
The variations and distribution of Saltator aurantiirostris. American Museum novitates ; no. 261

Chapman, Frank M. (Frank Michler), 1864-1945. (New York City : American Museum of Natural History, 1927)
Variations in the structure of the aftershaft and their taxonomic value. American Museum novitates ; no. 140

Miller, Waldron DeWitt.; American Ornithologists' Union. (New York City : The American Museum of Natural History, 1924)
The varved clays at Little Ferry, New Jersey. American Museum novitates ; no. 209

Reeds, Chester A. (Chester Albert), b. 1882. (New York City : American Museum of Natural History, 1926)
Vascular flora of Shades State Park and Pine Hills Natural Area, Indiana. Bulletin of the AMNH ; v. 123, article 7

McCormick, Jack. (New York : [American Museum of Natural History], 1962)
Vegetation changes in the Lake Mamsin area, Saruwaged Plateau, New Guinea. American Museum novitates ; no. 2628

Costin, A. B.; Hoogland, R. D. (Ruurd D.); Lendon, C.; Archbold Expedition to New Guinea 1964) (New York, N.Y. : American Museum of Natural History, 1977)

"Fossil leaf remains in ca. 5700-year-old lake deposits in the glacial Lake Mamsin (Guam) on rhe Saruwaged Plateau of New Guinea are compared with the floras of present-day grass-heath and forest in the area. The fossil ...
The vegetation of Micronesia. 1, General descriptions, the vegetation of the Marianas Islands, and a detailed consideration of the vegetation of Guam. Bulletin of the AMNH ; v. 119, article 1

Fosberg, F. Raymond (Francis Raymond), 1908- (New York : [American Museum of Natural History], 1960)
The ventral armor and feeding biomechanics of Glyptaspis verrucosa Newberry, a placoderm from the Fammenian Cleveland Shale. American Museum novitates ; no. 2655

Boylan, John C.; Murphy, Paula A. (New York, N.Y. : American Museum of Natural History, 1978)

"The four plates that constitute the sole known remains of Glyptaspis verrucosa Newberry are identified and described. The identification of these elements allows them to be properly placed and fitted relative to one another ...
The Vernay Collection of Cretaceous (Albian) ammonites from Angola. Bulletin of the AMNH ; v. 81, article 1.

Haas, Otto, 1887-; Lang, Herbert, 1879-1957.; Vernay Angola Expedition (1925) (New York : The American Museum of Natural History, 1942)
The vertebral columns of ricochetal rodents. Bulletin of the AMNH ; v. 63, article 6

Hatt, Robert T. (Robert Torrens), 1902- (New York : The American Museum of Natural History, 1932)
The vertebrate fauna of the Judith River Formation, Montana. Bulletin of the AMNH ; v. 147, article 6

Sahni, Ashok. (New York : [American Museum of Natural History], 1972)

"Geologic investigation of the late Cretaceous Judith River Formation in the area just north of the Judith River on the Missouri River in north-central Montana has resulted in the discovery of varied vertebrate forms. The ...

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