Now showing items 1-10 of 19
Review: The Archean
(American Association for the Advancement of Science, 1988)
Microfossils from the Late Precambrian Draken Conglomerate, Ny Friesland, Svalbard
(The Paleontological Society, 1982)
An intraformational "flake" conglomerate within the Late Precambrian (700-800 m.y.) Draken Conglomerate of Ny Friesland, Spitsbergen, contains abundant, well preserved microfossils in silicified shards of microbial mats, ...
Latest Proterozoic Microfossils from the Nama Group, Namibia (South West Africa)
Gray to black shales from the Kuibis and Schwarzrand subgroups of the Nama Group, South West Africa/Namibia, contain a distinctive, if depauperate, assemblage of organic-walled microfossils. The assemblage is dominated ...
Microfossils from Oolites and Pisolites of the Upper Proterozoic Eleonore Bay Group, Central East Greenland
(Society of Economic Paleontologists and Mineralogists, 1988)
Silicified oolites and pisolites from Bed 18 of the Upper Proterozoic (about 700-800 Ma) Limestone-Dolomite "Series" of the Eleonore Bay Group, central East Greenland, contain a diverse suite of organically preserved ...
Male aggressive behavior in a pair of sympatric sibling species
(Harvard University, Museum of Comparative Zoology, 1985)
Intraspecific encounters were staged between adult male <i>Anolis marcanoi</i> and <i>A. cybotes</i> in order to describe their aggressive behavior. The major component of stationary behavior is the dewlap display, accompanied ...
Systematics, Natural History, and Conservation: Field Biologists Must Fight a Public-Image Problem
(American Institute of Biological Sciences, 1988)
Constitution of Antheridium-Inducing Factor of Anemia Phyllitidis
Careful comparison of naturally derived and synthetic samples of the antheridium-inducing factor of Anemia phyllitidis, AA,,, by TLC, HPLC, NMR and GC-MS measurements allow unambiguous assignment of structure 2 to this ...
Sr Isotopic Variations in Upper Proterozoic carbonates from Svalbard and East Greenland
We report initial Sr(87)/Sr(86) values from an Upper Proterozoic carbonate succession from Svalbard and East Greenland. This succession, now tectonically separated into three sequences, is thick, relatively continuous, ...
Exceptional Preservation of Fossils in an Upper Proterozoic Shale
(Nature Publishing Group, 1988)
Late Proterozoic organisms must have been diverse and widely distributed, but in general their fossil record is both taxonomically and environmentally limited. Exceptional preservation of Proterozoic fossils is not unknown, ...
On Limits to Seed Production
(University of Chicago Press, 1988)