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Pulsating Patches: History and Analyses of Spatial, Seasonal, and Yearly Distribution of Living Benthic Foraminifera

By Martin A. Buzas, Lee-Ann C. Hayek, Jennifer A. Jett, Sherry A. Reed

Smithsonian Contributions to Paleobiology, no. 97

Patches are density differences between stations. Pulses are density differences with time. When multiple samples are taken within a habitat at each sampling time, it can be detected that densities in space and time do not act in unison. Significant statistical interaction between space and time is termed “pulsating patches.” A study in the Indian River Lagoon, Florida, this volume addresses the hypothesis of pulsating patches.

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Taxonomy of Deep-Sea Trachyleberidid, Thaerocytherid, and Hemicytherid Genera (Ostracoda)

By Moriaki Yasuhara, Gene Hunt, Hisayo Okahashi, and Simone N. Brandão

Systematic revision of three ostracod families (Crustacea) covering most Cenozoic genera provides a robust taxonomic baseline for deep-sea ostracod-based paleoceanographic, paleoecological, and macroevolutionary research. Examined ~700 present-day and fossil specimens (47 genera, 177 species); 5 genera and 45 species newly described; emended concepts proposed for several genera to stabilize their taxonomy.

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Andean Origin and Diversification of the Genus Perezia, an Ancient Lineage of Asteraceae

Smithsonian Contributions to Botany, no. 102

By María José Apodaca, Jorge V. Crisci, and Liliana Katinas

Phylogenetic morphological analysis supports Perezia as a monophyletic taxon, including recently excluded P. nutans and P. prenanthoides. Biogeographic results suggest southern Andes as the ancestral area for Perezia, with multiple dispersals. Geologic, paleoclimatology, and fossil evidence suggest the ancestor of Perezia inhabited areas above humid, temperate forests in the southern Andes during the Tertiary.

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Places of Invention

Edited by Arthur P. Molella and Anna Karvellas

The companion book to an upcoming museum exhibition of the same name, Places of Invention seeks to answer timely questions about the nature of invention and innovation: What is it about some places that sparks invention and innovation? Is it simply being at the right place at the right time, or is it more than that? How does “place”—whether physical, social, or cultural—support, constrain, and shape innovation? Why does invention flourish in one spot but struggle in another, even very similar location? In short: Why there? Why then?

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