WorldCat Identities

Nehm, Ross H.

Overview
Works: 10 works in 26 publications in 2 languages and 861 library holdings
Genres: Academic theses 
Roles: Author, Editor
Classifications: QE693.5, 557.293
Publication Timeline
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Most widely held works by Ross H Nehm
Evolutionary stasis and change in the Dominican Republic Neogene by Ross H Nehm( )

12 editions published in 2008 in English and Spanish and held by 805 WorldCat member libraries worldwide

Science is supposedly ultimately constrained by the nature of the physical world, meaning that changes in scientific methods and practice are supposed to be away from those with less utility and toward those that are more revealing, useful, and productive of insights into the nature of that world. In practice, however, science is no less susceptible to fads, culture shifts, and pendulum swings than any other realm of human endeavor. This is an especially important feature of science to keep in mind in the present climate of shrinking government funding (at least in prop- tion to the demand) and the resulting susceptibility of individual scientists and entire disciplines to being influenced by the changing priorities of funding agencies (even if, as such agencies maintain, those priorities come ultimately “from the c- munity”). The present volume is in several important respects a testimonial to both the threats and opportunities that such scientific culture swings pose, both for the individual researcher and a wider field. When scientific research in the Dominican Republic Neogene began more than a century ago, paleontology was an essentially descriptive discipline, focused mainly on finding, describing, and documenting the taxa represented in the fossil record, and (especially in invertebrate paleontology) on using these taxa for bi- tratigraphic correlation. Despite the successful integration of paleontology into the Modern Evolutionary Synthesis in the middle of the twentieth century (Simpson, 1944, 1953; Jepsen et al
Common paleozoic fossils of Wisconsin by Ross H Nehm( Book )

1 edition published in 2002 in English and held by 15 WorldCat member libraries worldwide

Evolutionary Stasis and Change in the Dominican Republic Neogene by Ross H Nehm( )

2 editions published in 2008 in English and held by 15 WorldCat member libraries worldwide

Neogene paleontology in the northern Dominican Republic( Book )

2 editions published in 2001 in English and held by 12 WorldCat member libraries worldwide

Marginellid gastropods are a prominent and well-preserved element in five well-studied and sampled Neogene stratigraphic sections of the Cibao Valley of the northern Dominican Republic. Among the marginellids, species of the genus Prunum (Hermannsen, 1852) are the most abundant, diverse, and temporally wide-ranging in these sections. Seven species (of which two are new) occur in these sections. They are: P. aminum (Dall, 1896); P. christineladdae (Maury, 1917a); P. coniforme (Sowerby, 1850); P. latissimum (Dall, 1896); P. maoense (Maury, 1917a); P. mauryense n. sp.; and P. gibsonsmithorum n. sp. Detailed analyses of the biostratigraphy, paleoecology, biogeogrpahy, and ontogenetic and spatiotemporal morphologic variation are presented for these species
Macroevolutionary pattern and developmental process in Marginellid gastropods from the neogene of the Caribbean Basin by Ross H Nehm( )

3 editions published in 1998 in English and held by 6 WorldCat member libraries worldwide

An emerging synthesis of development and evolution has been recognized by geneticists, developmental biologists, and evolutionary morphologists. Does invertebrate paleontology have a role to play in this emerging synthesis? This dissertation explores the applications of developmental data in invertebrate paleontology and the potential of these paleontological data to focus or expand our understanding of the role of development in macroevolutionary change. Paleontological research can contribute significantly to our understanding of the role of development in macroevolution when it targets groups with good fossil records, complete ontogenetic preservation, well-established phylogenies, and morphologies amenable to quantitative analysis and morphogenetic study. Fossil marginellid gastropods are one group that meets all of these criteria
Neogene paleontology in the Northern Dominican Republic by Fábio H. A Costa( )

2 editions published in 2001 in English and held by 2 WorldCat member libraries worldwide

A gradual morphologic transition during a rapid speciation event in marginellid gastropods (Neogene : Dominican Republic) by Ross H Nehm( )

1 edition published in 1994 in English and held by 1 WorldCat member library worldwide

We document a speciation event between two species of prunum (Marginellidae: Gastropoda) in pliocene strata of the northern Dominican Republic. The ancestral species, P. coniforme, is widely distributed in the mio-pliocene of the Dominican Republic and Jamaica, and has a range of at lcast 1 1 m.y. The descendant species, P. christineladdae, is endemic to the northern Dominican Republic. The ancestral species persists after its descendant arises. The transition between species is marked by stratigraphic and morphologic intermediates, and occurs during and interval estimated to be between 73.000 and 275.000 years (representing 0.6-2.5 percent of the duration of the ancestral species). although the transition takes more than a geologic instant, the overall pattern of morphologic change is best described by the model of punctuated equilibrium. The change between species apparently involved a habitat shift into deeper water, and occurred during acdelerated deepening. All of the neogene Dominican species of Prunum appear to have had depth-defined ranges
The genus Prunum (Gastropoda: Marginellidea)( Book )

1 edition published in 2001 in English and held by 1 WorldCat member library worldwide

Evolutionary stasis and change in the Dominican Republic neogene( Book )

1 edition published in 2008 in English and held by 1 WorldCat member library worldwide

Evolutionary Stasis and Change in the Dominican Republic Neogene. Aims and Scope Topics in Geobiology Book Series, Volume 30( )

1 edition published in 2008 in English and held by 1 WorldCat member library worldwide

The richly fossiliferous Neogene stratigraphic sections of the Dominican Republic serve as one of only a few geological research systems in the world where morphological stasis and punctuated speciation have been investigated in multiple lineages. This research system provides unprecedented opportunities for comparative studies of evolutionary stasis and change and their environmental and ecological contexts. In this volume, a diverse group of geologists and paleobiologists collectively focus their attention on this research system, providing an updated geological framework and a series of novel studies of evolutionary stasis and change among different lineages and associated ecological communities. This collection of studies illustrates the immense potential of collaborative, multidisciplinary, and field-based paleobiological research for studies of macroevolutionary change in the fossil record
 
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Evolutionary stasis and change in the Dominican Republic Neogene Evolutionary Stasis and Change in the Dominican Republic Neogene Evolutionary stasis and change in the Dominican Republic neogene
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Evolutionary Stasis and Change in the Dominican Republic NeogeneEvolutionary stasis and change in the Dominican Republic neogene
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