Fossil Arachnids

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Fossil Arachnids

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Author : Jason A. Dunlop
language : en
Publisher: Siri Scientific Press
Release Date : 2012

Fossil Arachnids written by Jason A. Dunlop and has been published by Siri Scientific Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Arachnida, Fossil categories.

Fossil arachnids date back more than 400 million years to the Silurian period, making them one of the first animal groups to appear in terrestrial ecosystems. This book provides information on what the arachnids are and their relationships to one another.

Fossil Spiders

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Author : David Penney
language : en
Publisher: Siri Scientific Press
Release Date : 2011

Fossil Spiders written by David Penney and has been published by Siri Scientific Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Amber fossils categories.

Compared to insects, fossil spiders have received only scant attention in the literature. Previously, the only works available were numerous scientific papers, many published in foreign languages. Most of these are basic descriptive taxonomic works, with very few considering broader biological concepts. Despite a significant increase in the discovery and description of fossil spiders within the last quarter Century this void remained unfilled. Thus, this short monograph aims to achieve several objectives. Firstly, to provide general and up to date background information on the overall importance and diversity of fossils spiders, including an indication of those groups for which the taxonomy is spurious and in need of reassessment. Secondly, to discuss the techniques available for working with fossil spiders and some of the problems encountered by palaeoarachnologists, including bias and limitations of the spider fossil record. Thirdly, the overall evolutionary history of spiders is summarized in the form of an evolutionary tree, which is subsequently used to address key issues of broad interest, such as origins, diversifications and extinctions, including the effects of mass extinctions and predator-prey co-radiations. Finally, the contribution that fossil data can make to understanding the past and present biogeography of the order is considered. This book should be of interest to both amateur and professional arachnologists and palaeontologists and will also serve as a general palaeontological reference work for neonologists studying extant spiders.

Catalogue Of The Smaller Arachnid Orders Of The World

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Author : Mark S Harvey
language : en
Publisher: CSIRO PUBLISHING
Release Date : 2003-06-04

Catalogue Of The Smaller Arachnid Orders Of The World written by Mark S Harvey and has been published by CSIRO PUBLISHING this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-06-04 with Science categories.

This authoritative catalogue will greatly assist readers in finding the correct taxonomic name for any given family, genus or species within each of the six arachnid orders treated. It contains a valuable summary of bibliographic information, enabling readers to access the worldwide literature for these smaller orders. The catalogue presents full bibliographic data on each of the taxa named thus far, treating over 1600 species. It contains the most current classification system for each group, some of which have not been catalogued on a world scale for over 70 years. A summary of taxonomic changes is included. This quality reference will be of immense value to arachnologists, systematists, taxonomists, ecologists and biodiversity professionals, especially those interested in tropical rainforest communities.

The Kinney Brick Quarry Lagerst Tte Late Pennsylvanian Of New Mexico

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Author : Spencer G. Lucas
language : en
Publisher: New Mexico Museum of Natural History and Science
Release Date :

The Kinney Brick Quarry Lagerst Tte Late Pennsylvanian Of New Mexico written by Spencer G. Lucas and has been published by New Mexico Museum of Natural History and Science this book supported file pdf, txt, epub, kindle and other format this book has been release on with Science categories.

Spider Evolution

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Author : Subir Ranjan Kundu
language : en
Publisher: Academic Press
Release Date : 2021-10-14

Spider Evolution written by Subir Ranjan Kundu and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-10-14 with Science categories.

Spider Evolution: Genetics, Behavior, and Ecological Influences provides a thorough exploration of the evolutionary trail of arachnids, particularly spider species, from prehistoric origins to current sustainability issues. This book analyzes extinct organisms in the Arachnida class, specifically looking at their phylogenomics and molecular footprints to understand evolutionary changes in diversification in today's species. Sections cover spider origins and their influences on behavioral traits, physiology of sensory organs, and biomechanics, also touching on spiders as prey and predators and how their roles have changed in the 400 million years of Arachnida existence. The book then focuses upon current environmental issues facing spider species and how these have, and can, affect the evolution of these organisms. Topics include biodiversity minimization, climate change and natural disasters. This book is a much-needed resource for entomologists and arachnid- or arthropod-driven researchers. Advanced undergraduate and graduate students will also benefit from the historic review, current assessment and future predictions of spider evolution provided in this book. - Provides a complete view of spider species from their first fossil evidence nearly 400 million years ago - Focuses on climate change and biodiversity threats as environmental factors currently affecting these organisms - Contains the most up-to-date knowledge on evolutionary genetics, physiology changes and behavioral outcomes

Timetrees Incorporating Fossils And Molecules 2nd Edition

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Author : Michel Laurin
language : en
Publisher: Frontiers Media SA
Release Date : 2022-09-15

Timetrees Incorporating Fossils And Molecules 2nd Edition written by Michel Laurin and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-09-15 with Science categories.

Calibrating phylogenies to time is central to addressing many questions in evolutionary biology and macroevolution. The fossil record once provided our only source for establishing a timeline for evolution. However, the incompleteness of the fossil record and the non-uniformity of fossil recovery rate make it challenging to obtain precise estimates of divergence times from fossil evidence alone. Molecular dating, which combines evidence from the geological and molecular records, enables us to generate a much more complete and precise timeline of events. The molecular clock can be time-calibrated using temporal evidence from fossils and used to estimate divergence times based on the assumption that the rate of sequence evolution will be approximately constant over time and among lineages. Methodological challenges to applying this concept in practice have been to relax the assumption of constant evolutionary rates and to model the uncertainty associated with paleontological and geological calibrations. To this end, available statistical methods have become increasingly complex in order to capture key features of empirical data. These are typically applied using Bayesian inference, which provides a powerful framework for incorporating multiple sources of uncertainty. Although overall more effort has been expended in developing models of molecular sequence evolution, critical advances have also included approaches to modeling taxonomic diversification and fossilization. In particular, recent advances in birth-death process models have allowed for continuous sampling along lineages, enabling more information from the fossil record to be incorporated into dating analyses in a statistically coherent way. In addition, available dating methods can now be applied to scenarios in which no molecular data may be available, allowing for novel insights into the evolution of entirely extinct clades. Other recent innovations enable us to date divergence times among taxa that have no fossil record, including the use of gene duplication events or biogeographic evidence. Furthermore, time-calibrated trees are necessary for obtaining phylogenetic estimates of taxonomic diversification and extinction rates, which can now be jointly inferred along with lineage divergence times. These approaches offer an exciting opportunity to understand the evolution of life in deep time, although key challenges remain, especially with regards to modeling the processes of genome evolution, taxonomic diversification and fossil recovery. In this Research Topic, we focus on recent advances in methodology, outstanding challenges, and the application of molecular and paleontological dating methods to empirical case studies across the Tree of Life.

Spider Research In The 21st Century

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Author : David Penney
language : en
Publisher:
Release Date : 2013

Spider Research In The 21st Century written by David Penney and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Spiders categories.

The result is a great increase in multi-disciplinary research and novel avenues incorporating spiders as model organisms.

Zoogeography Of Arachnida

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Author : Petar Beron
language : en
Publisher: Springer
Release Date : 2018-07-27

Zoogeography Of Arachnida written by Petar Beron and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-27 with Science categories.

This volume merges all geographical and paleogeographical data on all groups of the arachnofauna. The book features topics such as the ecological factors, climate and other barriers that influence the distribution of arachnida. It also elaborates on the characteristics of the distribution such as arachnida at high altitude (e.g. Himalaya), in caves, in polar regions and highlights differences between the arachnofauna of e.g. Mediterranean regions vs Central Europe, West African vs Indomalayan and more. Furthermore, amongst other topics the volume also includes chapters on the systems of arachnida, fossil orders, dispersal and dispersion, endemics and relicts, regional arachnogeography, cave and high altitude arachnida.

Spider Silk

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Author : Leslie Brunetta
language : en
Publisher: Yale University Press
Release Date : 2010-06-08

Spider Silk written by Leslie Brunetta and has been published by Yale University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-06-08 with Science categories.

Spiders, objects of eternal human fascination, are found in many places: on the ground, in the air, and even under water. Leslie Brunetta and Catherine Craig have teamed up to produce a substantive yet entertaining book for anyone who has ever wondered, as a spider rappelled out of reach on a line of silk, “How do they do that?” The orb web, that iconic wheel-shaped web most of us associate with spiders, contains at least four different silk proteins, each performing a different function and all meshing together to create a fly-catching machine that has amazed and inspired humans through the ages. Brunetta and Craig tell the intriguing story of how spiders evolved over 400 million years to add new silks and new uses for silk to their survival “toolkit” and, in the telling, take readers far beyond the orb. The authors describe the trials and triumphs of spiders as they use silk to negotiate an ever-changing environment, and they show how natural selection acts at the genetic level and as individuals struggle for survival.

Dominican Amber Spiders

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Author : David Penney
language : en
Publisher: Siri Scientific Press
Release Date : 2008

Dominican Amber Spiders written by David Penney and has been published by Siri Scientific Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Amber categories.