Comments on the Manhattan Stratigraphic Measure

作者：Diego Pol, Mark A. Norell · 发表于：Cladistics · 年份：2001 · DOI：10.1111/j.1096-0031.2001.tb00125.x · 被引用次数：78 · 研究领域：Evolution and Paleontology Studies、Geochemistry and Geologic Mapping、Geology and Paleoclimatology Research

The Manhattan stratigraphic measure was proposed as a measure of congruence between temporal information retrieved from the fossil record and a phylogenetic hypothesis. This index is based on the fit of a Sankoff character representing the stratigraphic ages of terminal taxa and is calculated in a way analogous to the consistency index. Sample cases are analyzed in which this measure is insensitive to increasing amounts of conflict between stratigraphic and topological temporal information. A simple modification of the step matrix upon which the measure is based is proposed. The modified index, MSM*, overcomes the observed problem and is based on the measurement of the number and extent of ghost lineages.