Systematics

Abstract: Embracing more than 5,000 genera, distributed in 425 families and 46 orders, Malcolm C. McKenna and Susan K. Bell's Classification of Mammals is the most comprehensive work to date on the systematics, relationships, and occurrences of all mammal taxa, living and extinct, down through the rank of genus. Since George Gaylord Simpson's 1945 classification, the paleontological record has been recalibrated, and the intervening years have seen much debate and progress concerning the theoretical underpinnings of systematization. McKenna inherited the project from Simpson and, with Bell, has constructed a completely updated hierarchical system that reflects the genealogy of Mammalia.

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Abstract: In this paper minimal standards for the description of new genera and cultivable species in the family Flavobacteriaceae are proposed in accordance with Recommendation 30b of the Bacteriological Code (1990 Revision). In addition to specified phenotypic characteristics, the description of new species should be based on DNA-DNA hybridization data, and the placement of new taxa should be consistent with phylogenetic data derived from 16S rRNA sequencing. An emended description of the family is also proposed as several new taxa have been described since 1996. These proposals have been endorsed by the members of the Subcommittee on the taxonomy of Flavobacterium and Cytophaga-like bacteria of the International Committee on Systematics of Prokaryotes.