The 'origin of larvae'has been widely discussed over the years, almost invariably with the
tacit understanding that larvae are secondary specializations of early stages in a …

The first book to review all the evidence concerning both the dinosaur extinctions and all the
other major extinctions-of plant, animal, terrestrial, and marine life-in the history of life. All the …

The power and throughput of next-generation sequencing is instigating a major
transformation in our understanding of evolution and classification of life on our planet. The …

The Phylum Echinodermata, comprising approximately 7,000 living species, and 13,000
fossil species, is epitomized by the familiar sea star, a universal symbol of the marine realm …

The Paleozoic and post-Paleozoic radiations of crinoids present an opportunity to explore
genomic and ecological explanations for patterns of morphologic diversification. Analysis of …

Although the status of Crinoidea (sea lilies and featherstars) as sister group to all other living
echinoderms is well-established, relationships among crinoids, particularly extant forms, are …

It has been argued that increases in predation over geological time should result in
increases in defensive adaptations in prey taxa. Recent in situ and laboratory observations …

Holothuroids, or sea cucumbers, are an abundant and diverse group of echinoderms with
over 1400 species occurring from the intertidal to the deepest oceanic trenches. In this study …

The Permian–Triassic mass extinction interval was an important time in the evolutionary
history of the echinoderms. Details of the extinction and, in particular the immediate post …

Different approaches to the significance of morphological characters have led to alternative
opinions on the phyletic affinities within the class Crinoidea. The molecular approach …