How to translate text using browser tools
1 June 2000 Controversy and Consensus in Asteroid Systematics: New Insights to Ordinal and Familial Relationships
K. Emily Knott, Gregory A. Wray
Author Affiliations +
Abstract

Phylogenetic approaches have sparked controversy in asteroid systematics since 1987. Despite recent attempts at resolving these differences and evidence of some consensus, our understanding of relationships among asteroid taxa remains unsatisfactory. This paper presents results of an investigation into asteroid evolutionary history using DNA sequence data from mitochondrial transfer RNA and the cytochrome oxidase c subunit I genes analyzed with and without previously published ribosomal gene sequences. Analysis of these genes provides an assessment of familial relationships but does little to elucidate ordinal relationships. A basal position for the Paxillosida is not supported. However, close relationships of some velatid and valvatid taxa are upheld. The resulting phylogenies are not a definitive answer to controversies in asteroid systematics. However, with new insights to some asteroid relationships, they highlight the need for a redirection of future systematic studies so a consensus can be made.

K. Emily Knott and Gregory A. Wray "Controversy and Consensus in Asteroid Systematics: New Insights to Ordinal and Familial Relationships," American Zoologist 40(3), 382-392, (1 June 2000). https://doi.org/10.1668/0003-1569(2000)040[0382:CACIAS]2.0.CO;2
Published: 1 June 2000
JOURNAL ARTICLE
11 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

RIGHTS & PERMISSIONS
Get copyright permission
Back to Top