Results 161 to 170 of about 64,478 (218)

Upper Jurassic Dinosaur Egg from Utah

Science, 1989
The Upper Jurassic egg described here is the first known egg from the 100-million-year gap in the fossil record between Lower Jurassic (South Africa) and upper Lower Cretaceous (Utah). The discovery of the egg, which was found mixed in with thousands of dinosaur bones rather than in a nest, the pathological multilayering of the eggshell as found in ...
K F, Hirsch, K L, Stadtman, W E, Miller, J H, Madsen   +3 more
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Marine Upper Jurassic, Eastern Wyoming

AAPG Bulletin, 1954
The Swift-Rierdon nomenclature of the Ellis group in Montana is applied in eastern Wyoming to formational units of the Sundance group. Indications are that the names are applicable to the marine Upper Jurassic throughout most of Wyoming and western South Dakota, but the term "Sundance" should be retained because of historical significance.
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Upper Jurassic, Upper Cretaceous and Palaeocene conifer woods from Mexico

Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 2017
ABSTRACTAlthough there are reports of permineralised woods in Mesozoic and Cenozoic strata in Mexico, there are few palaeobotanical studies based on coniferous stems. Four taxa of fossil wood from three localities in Mexico are described at the anatomical level and identified taxonomically based on detailed comparisons with woods of extant and fossil ...
César Ríos-Santos, Sergio R. S. Cevallos-Ferriz   +1 more
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Upper Jurassic Nautiloids from Kutch

Journal Geological Society of India, 1978
Abstract Nine species, belonging to genera Cenoceras Hyatt, Pseudaganides Spath and Paracenoceras Spath, from the Callovian and Oxfordian horizons of Habo Hill in Kutch (Gujarat), W. India are recorded. Most of the examples come from the Oxfordian beds.
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Upper Jurassic Lagerstätte Shar Teg, southwestern Mongolia

Paleontological Journal, 2014
One of the most interesting Mesozoic Lagerstatten, Shar Teg in southwestern Mongolia, is reviewed. The geological structure and oryctocoenoses of Shar Teg are described. Shar Teg is one of the most diverse Jurassic Lagerstatten in terms of fossils represented. Fossils from Shar Teg include aquatic and terrestrial plants, mollusks, crustaceans, insects,
A. G. Ponomarenko, D. S. Aristov, A. S. Bashkuev, Yu. M. Gubin, A. V. Khramov, E. D. Lukashevich, Yu. A. Popov, L. N. Pritykina, S. M. Sinitsa, N. D. Sinitshenkova, I. D. Sukatsheva, D. V. Vassilenko, E. V. Yan   +12 more
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Upper Jurassic ammonites from Mexico

Geological Society of America Bulletin, 1939
Near-shore deposits of Upper Jurassic age occur along the margin of the former Coahuila Peninsula of northern Mexico and along the site of the Sierra Madre Oriental in eastern Mexico. These deposits contain a mixed bivalve and ammonite fauna whose description will furnish a means of correlation between various facies in the Mexican Geosyncline. Studies
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Upper Jurassic of Northeastern Texas

AAPG Bulletin, 1949
The entirely subsurface Upper Jurassic of northeastern Texas includes, in ascending order, the Eagle Mills, Smackover, Buckner, Bossier, and Schuler formations; the last two constitute the Cotton Valley group. The stratigraphy of the units in northeastern Texas is described. Present evidence suggests that, in the East Texas basin, the Buckner formation
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Upper Jurassic Microplankton from Dorset, England

Micropaleontology, 1962
"Assemblages of organic-shelled microplankton are described from Callovian and Oxfordian horizons of Dorset. These include one new genus and three new species of dinoflagellates. In addition, a hystrichosphere subspecies is elevated to specific status. Comparisons are made with described assemblages of comparable age, and the stratigraphic significance
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UPPER LIMIT OF THE JURASSIC SYSTEM

Geological Society of America Bulletin, 1947
This paper deals with the zonal paleontological sequence of the uppermost Jurassic and lower Cretaceous strata on the strength of the Argentine ammonite fauna. Some misleading interpretations regarding the so-called Spiliceras damesi and Parodontoceras callistoides zones are pointed out, and some significant species actually found in them are discussed.
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The Mammals of the Upper Jurassic

1984
There are three major mammalian faunas in the Upper Jurassic (Tables 3.1 and 8.1). Two have been known for a long time, whilst the third was discovered in the late 1950s. The first comes from Durdlestone (Durlston) Bay, near Swanage in the Isle of Purbeck, Dorset. It is of uppermost Jurassic age (Clemens et al., 1979). Its discovery was made in or just
Doris M. Kermack, Kenneth A. Kermack
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